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-rw-r--r--kernel/tools/perf/builtin-trace.c2797
1 files changed, 2797 insertions, 0 deletions
diff --git a/kernel/tools/perf/builtin-trace.c b/kernel/tools/perf/builtin-trace.c
new file mode 100644
index 000000000..e12297036
--- /dev/null
+++ b/kernel/tools/perf/builtin-trace.c
@@ -0,0 +1,2797 @@
+#include <traceevent/event-parse.h>
+#include "builtin.h"
+#include "util/color.h"
+#include "util/debug.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/session.h"
+#include "util/thread.h"
+#include "util/parse-options.h"
+#include "util/strlist.h"
+#include "util/intlist.h"
+#include "util/thread_map.h"
+#include "util/stat.h"
+#include "trace-event.h"
+#include "util/parse-events.h"
+
+#include <libaudit.h>
+#include <stdlib.h>
+#include <sys/eventfd.h>
+#include <sys/mman.h>
+#include <linux/futex.h>
+
+/* For older distros: */
+#ifndef MAP_STACK
+# define MAP_STACK 0x20000
+#endif
+
+#ifndef MADV_HWPOISON
+# define MADV_HWPOISON 100
+#endif
+
+#ifndef MADV_MERGEABLE
+# define MADV_MERGEABLE 12
+#endif
+
+#ifndef MADV_UNMERGEABLE
+# define MADV_UNMERGEABLE 13
+#endif
+
+#ifndef EFD_SEMAPHORE
+# define EFD_SEMAPHORE 1
+#endif
+
+struct tp_field {
+ int offset;
+ union {
+ u64 (*integer)(struct tp_field *field, struct perf_sample *sample);
+ void *(*pointer)(struct tp_field *field, struct perf_sample *sample);
+ };
+};
+
+#define TP_UINT_FIELD(bits) \
+static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \
+{ \
+ u##bits value; \
+ memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
+ return value; \
+}
+
+TP_UINT_FIELD(8);
+TP_UINT_FIELD(16);
+TP_UINT_FIELD(32);
+TP_UINT_FIELD(64);
+
+#define TP_UINT_FIELD__SWAPPED(bits) \
+static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \
+{ \
+ u##bits value; \
+ memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \
+ return bswap_##bits(value);\
+}
+
+TP_UINT_FIELD__SWAPPED(16);
+TP_UINT_FIELD__SWAPPED(32);
+TP_UINT_FIELD__SWAPPED(64);
+
+static int tp_field__init_uint(struct tp_field *field,
+ struct format_field *format_field,
+ bool needs_swap)
+{
+ field->offset = format_field->offset;
+
+ switch (format_field->size) {
+ case 1:
+ field->integer = tp_field__u8;
+ break;
+ case 2:
+ field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16;
+ break;
+ case 4:
+ field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32;
+ break;
+ case 8:
+ field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64;
+ break;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample)
+{
+ return sample->raw_data + field->offset;
+}
+
+static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field)
+{
+ field->offset = format_field->offset;
+ field->pointer = tp_field__ptr;
+ return 0;
+}
+
+struct syscall_tp {
+ struct tp_field id;
+ union {
+ struct tp_field args, ret;
+ };
+};
+
+static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel,
+ struct tp_field *field,
+ const char *name)
+{
+ struct format_field *format_field = perf_evsel__field(evsel, name);
+
+ if (format_field == NULL)
+ return -1;
+
+ return tp_field__init_uint(field, format_field, evsel->needs_swap);
+}
+
+#define perf_evsel__init_sc_tp_uint_field(evsel, name) \
+ ({ struct syscall_tp *sc = evsel->priv;\
+ perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); })
+
+static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel,
+ struct tp_field *field,
+ const char *name)
+{
+ struct format_field *format_field = perf_evsel__field(evsel, name);
+
+ if (format_field == NULL)
+ return -1;
+
+ return tp_field__init_ptr(field, format_field);
+}
+
+#define perf_evsel__init_sc_tp_ptr_field(evsel, name) \
+ ({ struct syscall_tp *sc = evsel->priv;\
+ perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); })
+
+static void perf_evsel__delete_priv(struct perf_evsel *evsel)
+{
+ zfree(&evsel->priv);
+ perf_evsel__delete(evsel);
+}
+
+static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler)
+{
+ evsel->priv = malloc(sizeof(struct syscall_tp));
+ if (evsel->priv != NULL) {
+ if (perf_evsel__init_sc_tp_uint_field(evsel, id))
+ goto out_delete;
+
+ evsel->handler = handler;
+ return 0;
+ }
+
+ return -ENOMEM;
+
+out_delete:
+ zfree(&evsel->priv);
+ return -ENOENT;
+}
+
+static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler)
+{
+ struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction);
+
+ /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
+ if (evsel == NULL)
+ evsel = perf_evsel__newtp("syscalls", direction);
+
+ if (evsel) {
+ if (perf_evsel__init_syscall_tp(evsel, handler))
+ goto out_delete;
+ }
+
+ return evsel;
+
+out_delete:
+ perf_evsel__delete_priv(evsel);
+ return NULL;
+}
+
+#define perf_evsel__sc_tp_uint(evsel, name, sample) \
+ ({ struct syscall_tp *fields = evsel->priv; \
+ fields->name.integer(&fields->name, sample); })
+
+#define perf_evsel__sc_tp_ptr(evsel, name, sample) \
+ ({ struct syscall_tp *fields = evsel->priv; \
+ fields->name.pointer(&fields->name, sample); })
+
+static int perf_evlist__add_syscall_newtp(struct perf_evlist *evlist,
+ void *sys_enter_handler,
+ void *sys_exit_handler)
+{
+ int ret = -1;
+ struct perf_evsel *sys_enter, *sys_exit;
+
+ sys_enter = perf_evsel__syscall_newtp("sys_enter", sys_enter_handler);
+ if (sys_enter == NULL)
+ goto out;
+
+ if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args))
+ goto out_delete_sys_enter;
+
+ sys_exit = perf_evsel__syscall_newtp("sys_exit", sys_exit_handler);
+ if (sys_exit == NULL)
+ goto out_delete_sys_enter;
+
+ if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret))
+ goto out_delete_sys_exit;
+
+ perf_evlist__add(evlist, sys_enter);
+ perf_evlist__add(evlist, sys_exit);
+
+ ret = 0;
+out:
+ return ret;
+
+out_delete_sys_exit:
+ perf_evsel__delete_priv(sys_exit);
+out_delete_sys_enter:
+ perf_evsel__delete_priv(sys_enter);
+ goto out;
+}
+
+
+struct syscall_arg {
+ unsigned long val;
+ struct thread *thread;
+ struct trace *trace;
+ void *parm;
+ u8 idx;
+ u8 mask;
+};
+
+struct strarray {
+ int offset;
+ int nr_entries;
+ const char **entries;
+};
+
+#define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
+ .nr_entries = ARRAY_SIZE(array), \
+ .entries = array, \
+}
+
+#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
+ .offset = off, \
+ .nr_entries = ARRAY_SIZE(array), \
+ .entries = array, \
+}
+
+static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size,
+ const char *intfmt,
+ struct syscall_arg *arg)
+{
+ struct strarray *sa = arg->parm;
+ int idx = arg->val - sa->offset;
+
+ if (idx < 0 || idx >= sa->nr_entries)
+ return scnprintf(bf, size, intfmt, arg->val);
+
+ return scnprintf(bf, size, "%s", sa->entries[idx]);
+}
+
+static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg);
+}
+
+#define SCA_STRARRAY syscall_arg__scnprintf_strarray
+
+#if defined(__i386__) || defined(__x86_64__)
+/*
+ * FIXME: Make this available to all arches as soon as the ioctl beautifier
+ * gets rewritten to support all arches.
+ */
+static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg);
+}
+
+#define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray
+#endif /* defined(__i386__) || defined(__x86_64__) */
+
+static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
+ struct syscall_arg *arg);
+
+#define SCA_FD syscall_arg__scnprintf_fd
+
+static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int fd = arg->val;
+
+ if (fd == AT_FDCWD)
+ return scnprintf(bf, size, "CWD");
+
+ return syscall_arg__scnprintf_fd(bf, size, arg);
+}
+
+#define SCA_FDAT syscall_arg__scnprintf_fd_at
+
+static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
+ struct syscall_arg *arg);
+
+#define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd
+
+static size_t syscall_arg__scnprintf_hex(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ return scnprintf(bf, size, "%#lx", arg->val);
+}
+
+#define SCA_HEX syscall_arg__scnprintf_hex
+
+static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, prot = arg->val;
+
+ if (prot == PROT_NONE)
+ return scnprintf(bf, size, "NONE");
+#define P_MMAP_PROT(n) \
+ if (prot & PROT_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ prot &= ~PROT_##n; \
+ }
+
+ P_MMAP_PROT(EXEC);
+ P_MMAP_PROT(READ);
+ P_MMAP_PROT(WRITE);
+#ifdef PROT_SEM
+ P_MMAP_PROT(SEM);
+#endif
+ P_MMAP_PROT(GROWSDOWN);
+ P_MMAP_PROT(GROWSUP);
+#undef P_MMAP_PROT
+
+ if (prot)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot);
+
+ return printed;
+}
+
+#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot
+
+static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, flags = arg->val;
+
+#define P_MMAP_FLAG(n) \
+ if (flags & MAP_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ flags &= ~MAP_##n; \
+ }
+
+ P_MMAP_FLAG(SHARED);
+ P_MMAP_FLAG(PRIVATE);
+#ifdef MAP_32BIT
+ P_MMAP_FLAG(32BIT);
+#endif
+ P_MMAP_FLAG(ANONYMOUS);
+ P_MMAP_FLAG(DENYWRITE);
+ P_MMAP_FLAG(EXECUTABLE);
+ P_MMAP_FLAG(FILE);
+ P_MMAP_FLAG(FIXED);
+ P_MMAP_FLAG(GROWSDOWN);
+#ifdef MAP_HUGETLB
+ P_MMAP_FLAG(HUGETLB);
+#endif
+ P_MMAP_FLAG(LOCKED);
+ P_MMAP_FLAG(NONBLOCK);
+ P_MMAP_FLAG(NORESERVE);
+ P_MMAP_FLAG(POPULATE);
+ P_MMAP_FLAG(STACK);
+#ifdef MAP_UNINITIALIZED
+ P_MMAP_FLAG(UNINITIALIZED);
+#endif
+#undef P_MMAP_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
+
+ return printed;
+}
+
+#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
+
+static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, flags = arg->val;
+
+#define P_MREMAP_FLAG(n) \
+ if (flags & MREMAP_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ flags &= ~MREMAP_##n; \
+ }
+
+ P_MREMAP_FLAG(MAYMOVE);
+#ifdef MREMAP_FIXED
+ P_MREMAP_FLAG(FIXED);
+#endif
+#undef P_MREMAP_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
+
+ return printed;
+}
+
+#define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags
+
+static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int behavior = arg->val;
+
+ switch (behavior) {
+#define P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n)
+ P_MADV_BHV(NORMAL);
+ P_MADV_BHV(RANDOM);
+ P_MADV_BHV(SEQUENTIAL);
+ P_MADV_BHV(WILLNEED);
+ P_MADV_BHV(DONTNEED);
+ P_MADV_BHV(REMOVE);
+ P_MADV_BHV(DONTFORK);
+ P_MADV_BHV(DOFORK);
+ P_MADV_BHV(HWPOISON);
+#ifdef MADV_SOFT_OFFLINE
+ P_MADV_BHV(SOFT_OFFLINE);
+#endif
+ P_MADV_BHV(MERGEABLE);
+ P_MADV_BHV(UNMERGEABLE);
+#ifdef MADV_HUGEPAGE
+ P_MADV_BHV(HUGEPAGE);
+#endif
+#ifdef MADV_NOHUGEPAGE
+ P_MADV_BHV(NOHUGEPAGE);
+#endif
+#ifdef MADV_DONTDUMP
+ P_MADV_BHV(DONTDUMP);
+#endif
+#ifdef MADV_DODUMP
+ P_MADV_BHV(DODUMP);
+#endif
+#undef P_MADV_PHV
+ default: break;
+ }
+
+ return scnprintf(bf, size, "%#x", behavior);
+}
+
+#define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior
+
+static size_t syscall_arg__scnprintf_flock(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, op = arg->val;
+
+ if (op == 0)
+ return scnprintf(bf, size, "NONE");
+#define P_CMD(cmd) \
+ if ((op & LOCK_##cmd) == LOCK_##cmd) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #cmd); \
+ op &= ~LOCK_##cmd; \
+ }
+
+ P_CMD(SH);
+ P_CMD(EX);
+ P_CMD(NB);
+ P_CMD(UN);
+ P_CMD(MAND);
+ P_CMD(RW);
+ P_CMD(READ);
+ P_CMD(WRITE);
+#undef P_OP
+
+ if (op)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op);
+
+ return printed;
+}
+
+#define SCA_FLOCK syscall_arg__scnprintf_flock
+
+static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg)
+{
+ enum syscall_futex_args {
+ SCF_UADDR = (1 << 0),
+ SCF_OP = (1 << 1),
+ SCF_VAL = (1 << 2),
+ SCF_TIMEOUT = (1 << 3),
+ SCF_UADDR2 = (1 << 4),
+ SCF_VAL3 = (1 << 5),
+ };
+ int op = arg->val;
+ int cmd = op & FUTEX_CMD_MASK;
+ size_t printed = 0;
+
+ switch (cmd) {
+#define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n);
+ P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
+ P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break;
+ P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break;
+ P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break;
+ P_FUTEX_OP(WAKE_OP); break;
+ P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break;
+ P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break;
+ P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break;
+ P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break;
+ P_FUTEX_OP(WAIT_REQUEUE_PI); break;
+ default: printed = scnprintf(bf, size, "%#x", cmd); break;
+ }
+
+ if (op & FUTEX_PRIVATE_FLAG)
+ printed += scnprintf(bf + printed, size - printed, "|PRIV");
+
+ if (op & FUTEX_CLOCK_REALTIME)
+ printed += scnprintf(bf + printed, size - printed, "|CLKRT");
+
+ return printed;
+}
+
+#define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op
+
+static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", };
+static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1);
+
+static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", };
+static DEFINE_STRARRAY(itimers);
+
+static const char *whences[] = { "SET", "CUR", "END",
+#ifdef SEEK_DATA
+"DATA",
+#endif
+#ifdef SEEK_HOLE
+"HOLE",
+#endif
+};
+static DEFINE_STRARRAY(whences);
+
+static const char *fcntl_cmds[] = {
+ "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK",
+ "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64",
+ "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX",
+ "F_GETOWNER_UIDS",
+};
+static DEFINE_STRARRAY(fcntl_cmds);
+
+static const char *rlimit_resources[] = {
+ "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE",
+ "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO",
+ "RTTIME",
+};
+static DEFINE_STRARRAY(rlimit_resources);
+
+static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", };
+static DEFINE_STRARRAY(sighow);
+
+static const char *clockid[] = {
+ "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID",
+ "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE",
+};
+static DEFINE_STRARRAY(clockid);
+
+static const char *socket_families[] = {
+ "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM",
+ "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI",
+ "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC",
+ "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC",
+ "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF",
+ "ALG", "NFC", "VSOCK",
+};
+static DEFINE_STRARRAY(socket_families);
+
+#ifndef SOCK_TYPE_MASK
+#define SOCK_TYPE_MASK 0xf
+#endif
+
+static size_t syscall_arg__scnprintf_socket_type(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ size_t printed;
+ int type = arg->val,
+ flags = type & ~SOCK_TYPE_MASK;
+
+ type &= SOCK_TYPE_MASK;
+ /*
+ * Can't use a strarray, MIPS may override for ABI reasons.
+ */
+ switch (type) {
+#define P_SK_TYPE(n) case SOCK_##n: printed = scnprintf(bf, size, #n); break;
+ P_SK_TYPE(STREAM);
+ P_SK_TYPE(DGRAM);
+ P_SK_TYPE(RAW);
+ P_SK_TYPE(RDM);
+ P_SK_TYPE(SEQPACKET);
+ P_SK_TYPE(DCCP);
+ P_SK_TYPE(PACKET);
+#undef P_SK_TYPE
+ default:
+ printed = scnprintf(bf, size, "%#x", type);
+ }
+
+#define P_SK_FLAG(n) \
+ if (flags & SOCK_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "|%s", #n); \
+ flags &= ~SOCK_##n; \
+ }
+
+ P_SK_FLAG(CLOEXEC);
+ P_SK_FLAG(NONBLOCK);
+#undef P_SK_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "|%#x", flags);
+
+ return printed;
+}
+
+#define SCA_SK_TYPE syscall_arg__scnprintf_socket_type
+
+#ifndef MSG_PROBE
+#define MSG_PROBE 0x10
+#endif
+#ifndef MSG_WAITFORONE
+#define MSG_WAITFORONE 0x10000
+#endif
+#ifndef MSG_SENDPAGE_NOTLAST
+#define MSG_SENDPAGE_NOTLAST 0x20000
+#endif
+#ifndef MSG_FASTOPEN
+#define MSG_FASTOPEN 0x20000000
+#endif
+
+static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, flags = arg->val;
+
+ if (flags == 0)
+ return scnprintf(bf, size, "NONE");
+#define P_MSG_FLAG(n) \
+ if (flags & MSG_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ flags &= ~MSG_##n; \
+ }
+
+ P_MSG_FLAG(OOB);
+ P_MSG_FLAG(PEEK);
+ P_MSG_FLAG(DONTROUTE);
+ P_MSG_FLAG(TRYHARD);
+ P_MSG_FLAG(CTRUNC);
+ P_MSG_FLAG(PROBE);
+ P_MSG_FLAG(TRUNC);
+ P_MSG_FLAG(DONTWAIT);
+ P_MSG_FLAG(EOR);
+ P_MSG_FLAG(WAITALL);
+ P_MSG_FLAG(FIN);
+ P_MSG_FLAG(SYN);
+ P_MSG_FLAG(CONFIRM);
+ P_MSG_FLAG(RST);
+ P_MSG_FLAG(ERRQUEUE);
+ P_MSG_FLAG(NOSIGNAL);
+ P_MSG_FLAG(MORE);
+ P_MSG_FLAG(WAITFORONE);
+ P_MSG_FLAG(SENDPAGE_NOTLAST);
+ P_MSG_FLAG(FASTOPEN);
+ P_MSG_FLAG(CMSG_CLOEXEC);
+#undef P_MSG_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
+
+ return printed;
+}
+
+#define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags
+
+static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ size_t printed = 0;
+ int mode = arg->val;
+
+ if (mode == F_OK) /* 0 */
+ return scnprintf(bf, size, "F");
+#define P_MODE(n) \
+ if (mode & n##_OK) { \
+ printed += scnprintf(bf + printed, size - printed, "%s", #n); \
+ mode &= ~n##_OK; \
+ }
+
+ P_MODE(R);
+ P_MODE(W);
+ P_MODE(X);
+#undef P_MODE
+
+ if (mode)
+ printed += scnprintf(bf + printed, size - printed, "|%#x", mode);
+
+ return printed;
+}
+
+#define SCA_ACCMODE syscall_arg__scnprintf_access_mode
+
+static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, flags = arg->val;
+
+ if (!(flags & O_CREAT))
+ arg->mask |= 1 << (arg->idx + 1); /* Mask the mode parm */
+
+ if (flags == 0)
+ return scnprintf(bf, size, "RDONLY");
+#define P_FLAG(n) \
+ if (flags & O_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ flags &= ~O_##n; \
+ }
+
+ P_FLAG(APPEND);
+ P_FLAG(ASYNC);
+ P_FLAG(CLOEXEC);
+ P_FLAG(CREAT);
+ P_FLAG(DIRECT);
+ P_FLAG(DIRECTORY);
+ P_FLAG(EXCL);
+ P_FLAG(LARGEFILE);
+ P_FLAG(NOATIME);
+ P_FLAG(NOCTTY);
+#ifdef O_NONBLOCK
+ P_FLAG(NONBLOCK);
+#elif O_NDELAY
+ P_FLAG(NDELAY);
+#endif
+#ifdef O_PATH
+ P_FLAG(PATH);
+#endif
+ P_FLAG(RDWR);
+#ifdef O_DSYNC
+ if ((flags & O_SYNC) == O_SYNC)
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", "SYNC");
+ else {
+ P_FLAG(DSYNC);
+ }
+#else
+ P_FLAG(SYNC);
+#endif
+ P_FLAG(TRUNC);
+ P_FLAG(WRONLY);
+#undef P_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
+
+ return printed;
+}
+
+#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
+
+static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, flags = arg->val;
+
+ if (flags == 0)
+ return scnprintf(bf, size, "NONE");
+#define P_FLAG(n) \
+ if (flags & EFD_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ flags &= ~EFD_##n; \
+ }
+
+ P_FLAG(SEMAPHORE);
+ P_FLAG(CLOEXEC);
+ P_FLAG(NONBLOCK);
+#undef P_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
+
+ return printed;
+}
+
+#define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags
+
+static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int printed = 0, flags = arg->val;
+
+#define P_FLAG(n) \
+ if (flags & O_##n) { \
+ printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
+ flags &= ~O_##n; \
+ }
+
+ P_FLAG(CLOEXEC);
+ P_FLAG(NONBLOCK);
+#undef P_FLAG
+
+ if (flags)
+ printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
+
+ return printed;
+}
+
+#define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags
+
+static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg)
+{
+ int sig = arg->val;
+
+ switch (sig) {
+#define P_SIGNUM(n) case SIG##n: return scnprintf(bf, size, #n)
+ P_SIGNUM(HUP);
+ P_SIGNUM(INT);
+ P_SIGNUM(QUIT);
+ P_SIGNUM(ILL);
+ P_SIGNUM(TRAP);
+ P_SIGNUM(ABRT);
+ P_SIGNUM(BUS);
+ P_SIGNUM(FPE);
+ P_SIGNUM(KILL);
+ P_SIGNUM(USR1);
+ P_SIGNUM(SEGV);
+ P_SIGNUM(USR2);
+ P_SIGNUM(PIPE);
+ P_SIGNUM(ALRM);
+ P_SIGNUM(TERM);
+ P_SIGNUM(CHLD);
+ P_SIGNUM(CONT);
+ P_SIGNUM(STOP);
+ P_SIGNUM(TSTP);
+ P_SIGNUM(TTIN);
+ P_SIGNUM(TTOU);
+ P_SIGNUM(URG);
+ P_SIGNUM(XCPU);
+ P_SIGNUM(XFSZ);
+ P_SIGNUM(VTALRM);
+ P_SIGNUM(PROF);
+ P_SIGNUM(WINCH);
+ P_SIGNUM(IO);
+ P_SIGNUM(PWR);
+ P_SIGNUM(SYS);
+#ifdef SIGEMT
+ P_SIGNUM(EMT);
+#endif
+#ifdef SIGSTKFLT
+ P_SIGNUM(STKFLT);
+#endif
+#ifdef SIGSWI
+ P_SIGNUM(SWI);
+#endif
+ default: break;
+ }
+
+ return scnprintf(bf, size, "%#x", sig);
+}
+
+#define SCA_SIGNUM syscall_arg__scnprintf_signum
+
+#if defined(__i386__) || defined(__x86_64__)
+/*
+ * FIXME: Make this available to all arches.
+ */
+#define TCGETS 0x5401
+
+static const char *tioctls[] = {
+ "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW",
+ "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL",
+ "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI",
+ "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC",
+ "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX",
+ "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO",
+ "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK",
+ "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2",
+ "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK",
+ "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG",
+ "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL",
+ [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG",
+ "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS",
+ "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI",
+ "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE",
+};
+
+static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401);
+#endif /* defined(__i386__) || defined(__x86_64__) */
+
+#define STRARRAY(arg, name, array) \
+ .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \
+ .arg_parm = { [arg] = &strarray__##array, }
+
+static struct syscall_fmt {
+ const char *name;
+ const char *alias;
+ size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg);
+ void *arg_parm[6];
+ bool errmsg;
+ bool timeout;
+ bool hexret;
+} syscall_fmts[] = {
+ { .name = "access", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_ACCMODE, /* mode */ }, },
+ { .name = "arch_prctl", .errmsg = true, .alias = "prctl", },
+ { .name = "brk", .hexret = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, },
+ { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), },
+ { .name = "close", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, },
+ { .name = "connect", .errmsg = true, },
+ { .name = "dup", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "dup2", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "dup3", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), },
+ { .name = "eventfd2", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, },
+ { .name = "faccessat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "fadvise64", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fallocate", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fchdir", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fchmod", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fchmodat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
+ { .name = "fchown", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fchownat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
+ { .name = "fcntl", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */
+ [1] = SCA_STRARRAY, /* cmd */ },
+ .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, },
+ { .name = "fdatasync", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "flock", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */
+ [1] = SCA_FLOCK, /* cmd */ }, },
+ { .name = "fsetxattr", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fstat", .errmsg = true, .alias = "newfstat",
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fstatat", .errmsg = true, .alias = "newfstatat",
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "fstatfs", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "fsync", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "ftruncate", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "futex", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, },
+ { .name = "futimesat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
+ { .name = "getdents", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "getdents64", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), },
+ { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
+ { .name = "ioctl", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */
+#if defined(__i386__) || defined(__x86_64__)
+/*
+ * FIXME: Make this available to all arches.
+ */
+ [1] = SCA_STRHEXARRAY, /* cmd */
+ [2] = SCA_HEX, /* arg */ },
+ .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, },
+#else
+ [2] = SCA_HEX, /* arg */ }, },
+#endif
+ { .name = "kill", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
+ { .name = "linkat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
+ { .name = "lseek", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */
+ [2] = SCA_STRARRAY, /* whence */ },
+ .arg_parm = { [2] = &strarray__whences, /* whence */ }, },
+ { .name = "lstat", .errmsg = true, .alias = "newlstat", },
+ { .name = "madvise", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* start */
+ [2] = SCA_MADV_BHV, /* behavior */ }, },
+ { .name = "mkdirat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
+ { .name = "mknodat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, },
+ { .name = "mlock", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
+ { .name = "mlockall", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
+ { .name = "mmap", .hexret = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */
+ [2] = SCA_MMAP_PROT, /* prot */
+ [3] = SCA_MMAP_FLAGS, /* flags */
+ [4] = SCA_FD, /* fd */ }, },
+ { .name = "mprotect", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* start */
+ [2] = SCA_MMAP_PROT, /* prot */ }, },
+ { .name = "mremap", .hexret = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */
+ [3] = SCA_MREMAP_FLAGS, /* flags */
+ [4] = SCA_HEX, /* new_addr */ }, },
+ { .name = "munlock", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
+ { .name = "munmap", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, },
+ { .name = "name_to_handle_at", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "newfstatat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "open", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "open_by_handle_at", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
+ [2] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "openat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */
+ [2] = SCA_OPEN_FLAGS, /* flags */ }, },
+ { .name = "pipe2", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, },
+ { .name = "poll", .errmsg = true, .timeout = true, },
+ { .name = "ppoll", .errmsg = true, .timeout = true, },
+ { .name = "pread", .errmsg = true, .alias = "pread64",
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "preadv", .errmsg = true, .alias = "pread",
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), },
+ { .name = "pwrite", .errmsg = true, .alias = "pwrite64",
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "pwritev", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "read", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "readlinkat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "readv", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "recvfrom", .errmsg = true,
+ .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
+ { .name = "recvmmsg", .errmsg = true,
+ .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
+ { .name = "recvmsg", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, },
+ { .name = "renameat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "rt_sigaction", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, },
+ { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), },
+ { .name = "rt_sigqueueinfo", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
+ { .name = "rt_tgsigqueueinfo", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
+ { .name = "select", .errmsg = true, .timeout = true, },
+ { .name = "sendmmsg", .errmsg = true,
+ .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
+ { .name = "sendmsg", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_MSG_FLAGS, /* flags */ }, },
+ { .name = "sendto", .errmsg = true,
+ .arg_scnprintf = { [3] = SCA_MSG_FLAGS, /* flags */ }, },
+ { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), },
+ { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), },
+ { .name = "shutdown", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "socket", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
+ [1] = SCA_SK_TYPE, /* type */ },
+ .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
+ { .name = "socketpair", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */
+ [1] = SCA_SK_TYPE, /* type */ },
+ .arg_parm = { [0] = &strarray__socket_families, /* family */ }, },
+ { .name = "stat", .errmsg = true, .alias = "newstat", },
+ { .name = "symlinkat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "tgkill", .errmsg = true,
+ .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, },
+ { .name = "tkill", .errmsg = true,
+ .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, },
+ { .name = "uname", .errmsg = true, .alias = "newuname", },
+ { .name = "unlinkat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, },
+ { .name = "utimensat", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ }, },
+ { .name = "write", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+ { .name = "writev", .errmsg = true,
+ .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, },
+};
+
+static int syscall_fmt__cmp(const void *name, const void *fmtp)
+{
+ const struct syscall_fmt *fmt = fmtp;
+ return strcmp(name, fmt->name);
+}
+
+static struct syscall_fmt *syscall_fmt__find(const char *name)
+{
+ const int nmemb = ARRAY_SIZE(syscall_fmts);
+ return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp);
+}
+
+struct syscall {
+ struct event_format *tp_format;
+ int nr_args;
+ struct format_field *args;
+ const char *name;
+ bool filtered;
+ bool is_exit;
+ struct syscall_fmt *fmt;
+ size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg);
+ void **arg_parm;
+};
+
+static size_t fprintf_duration(unsigned long t, FILE *fp)
+{
+ double duration = (double)t / NSEC_PER_MSEC;
+ size_t printed = fprintf(fp, "(");
+
+ if (duration >= 1.0)
+ printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration);
+ else if (duration >= 0.01)
+ printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration);
+ else
+ printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration);
+ return printed + fprintf(fp, "): ");
+}
+
+struct thread_trace {
+ u64 entry_time;
+ u64 exit_time;
+ bool entry_pending;
+ unsigned long nr_events;
+ unsigned long pfmaj, pfmin;
+ char *entry_str;
+ double runtime_ms;
+ struct {
+ int max;
+ char **table;
+ } paths;
+
+ struct intlist *syscall_stats;
+};
+
+static struct thread_trace *thread_trace__new(void)
+{
+ struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace));
+
+ if (ttrace)
+ ttrace->paths.max = -1;
+
+ ttrace->syscall_stats = intlist__new(NULL);
+
+ return ttrace;
+}
+
+static struct thread_trace *thread__trace(struct thread *thread, FILE *fp)
+{
+ struct thread_trace *ttrace;
+
+ if (thread == NULL)
+ goto fail;
+
+ if (thread__priv(thread) == NULL)
+ thread__set_priv(thread, thread_trace__new());
+
+ if (thread__priv(thread) == NULL)
+ goto fail;
+
+ ttrace = thread__priv(thread);
+ ++ttrace->nr_events;
+
+ return ttrace;
+fail:
+ color_fprintf(fp, PERF_COLOR_RED,
+ "WARNING: not enough memory, dropping samples!\n");
+ return NULL;
+}
+
+#define TRACE_PFMAJ (1 << 0)
+#define TRACE_PFMIN (1 << 1)
+
+struct trace {
+ struct perf_tool tool;
+ struct {
+ int machine;
+ int open_id;
+ } audit;
+ struct {
+ int max;
+ struct syscall *table;
+ } syscalls;
+ struct record_opts opts;
+ struct perf_evlist *evlist;
+ struct machine *host;
+ struct thread *current;
+ u64 base_time;
+ FILE *output;
+ unsigned long nr_events;
+ struct strlist *ev_qualifier;
+ const char *last_vfs_getname;
+ struct intlist *tid_list;
+ struct intlist *pid_list;
+ struct {
+ size_t nr;
+ pid_t *entries;
+ } filter_pids;
+ double duration_filter;
+ double runtime_ms;
+ struct {
+ u64 vfs_getname,
+ proc_getname;
+ } stats;
+ bool not_ev_qualifier;
+ bool live;
+ bool full_time;
+ bool sched;
+ bool multiple_threads;
+ bool summary;
+ bool summary_only;
+ bool show_comm;
+ bool show_tool_stats;
+ bool trace_syscalls;
+ bool force;
+ int trace_pgfaults;
+};
+
+static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname)
+{
+ struct thread_trace *ttrace = thread__priv(thread);
+
+ if (fd > ttrace->paths.max) {
+ char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *));
+
+ if (npath == NULL)
+ return -1;
+
+ if (ttrace->paths.max != -1) {
+ memset(npath + ttrace->paths.max + 1, 0,
+ (fd - ttrace->paths.max) * sizeof(char *));
+ } else {
+ memset(npath, 0, (fd + 1) * sizeof(char *));
+ }
+
+ ttrace->paths.table = npath;
+ ttrace->paths.max = fd;
+ }
+
+ ttrace->paths.table[fd] = strdup(pathname);
+
+ return ttrace->paths.table[fd] != NULL ? 0 : -1;
+}
+
+static int thread__read_fd_path(struct thread *thread, int fd)
+{
+ char linkname[PATH_MAX], pathname[PATH_MAX];
+ struct stat st;
+ int ret;
+
+ if (thread->pid_ == thread->tid) {
+ scnprintf(linkname, sizeof(linkname),
+ "/proc/%d/fd/%d", thread->pid_, fd);
+ } else {
+ scnprintf(linkname, sizeof(linkname),
+ "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd);
+ }
+
+ if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname))
+ return -1;
+
+ ret = readlink(linkname, pathname, sizeof(pathname));
+
+ if (ret < 0 || ret > st.st_size)
+ return -1;
+
+ pathname[ret] = '\0';
+ return trace__set_fd_pathname(thread, fd, pathname);
+}
+
+static const char *thread__fd_path(struct thread *thread, int fd,
+ struct trace *trace)
+{
+ struct thread_trace *ttrace = thread__priv(thread);
+
+ if (ttrace == NULL)
+ return NULL;
+
+ if (fd < 0)
+ return NULL;
+
+ if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) {
+ if (!trace->live)
+ return NULL;
+ ++trace->stats.proc_getname;
+ if (thread__read_fd_path(thread, fd))
+ return NULL;
+ }
+
+ return ttrace->paths.table[fd];
+}
+
+static size_t syscall_arg__scnprintf_fd(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int fd = arg->val;
+ size_t printed = scnprintf(bf, size, "%d", fd);
+ const char *path = thread__fd_path(arg->thread, fd, arg->trace);
+
+ if (path)
+ printed += scnprintf(bf + printed, size - printed, "<%s>", path);
+
+ return printed;
+}
+
+static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size,
+ struct syscall_arg *arg)
+{
+ int fd = arg->val;
+ size_t printed = syscall_arg__scnprintf_fd(bf, size, arg);
+ struct thread_trace *ttrace = thread__priv(arg->thread);
+
+ if (ttrace && fd >= 0 && fd <= ttrace->paths.max)
+ zfree(&ttrace->paths.table[fd]);
+
+ return printed;
+}
+
+static bool trace__filter_duration(struct trace *trace, double t)
+{
+ return t < (trace->duration_filter * NSEC_PER_MSEC);
+}
+
+static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
+{
+ double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
+
+ return fprintf(fp, "%10.3f ", ts);
+}
+
+static bool done = false;
+static bool interrupted = false;
+
+static void sig_handler(int sig)
+{
+ done = true;
+ interrupted = sig == SIGINT;
+}
+
+static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread,
+ u64 duration, u64 tstamp, FILE *fp)
+{
+ size_t printed = trace__fprintf_tstamp(trace, tstamp, fp);
+ printed += fprintf_duration(duration, fp);
+
+ if (trace->multiple_threads) {
+ if (trace->show_comm)
+ printed += fprintf(fp, "%.14s/", thread__comm_str(thread));
+ printed += fprintf(fp, "%d ", thread->tid);
+ }
+
+ return printed;
+}
+
+static int trace__process_event(struct trace *trace, struct machine *machine,
+ union perf_event *event, struct perf_sample *sample)
+{
+ int ret = 0;
+
+ switch (event->header.type) {
+ case PERF_RECORD_LOST:
+ color_fprintf(trace->output, PERF_COLOR_RED,
+ "LOST %" PRIu64 " events!\n", event->lost.lost);
+ ret = machine__process_lost_event(machine, event, sample);
+ default:
+ ret = machine__process_event(machine, event, sample);
+ break;
+ }
+
+ return ret;
+}
+
+static int trace__tool_process(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct machine *machine)
+{
+ struct trace *trace = container_of(tool, struct trace, tool);
+ return trace__process_event(trace, machine, event, sample);
+}
+
+static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
+{
+ int err = symbol__init(NULL);
+
+ if (err)
+ return err;
+
+ trace->host = machine__new_host();
+ if (trace->host == NULL)
+ return -ENOMEM;
+
+ err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
+ evlist->threads, trace__tool_process, false);
+ if (err)
+ symbol__exit();
+
+ return err;
+}
+
+static int syscall__set_arg_fmts(struct syscall *sc)
+{
+ struct format_field *field;
+ int idx = 0;
+
+ sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *));
+ if (sc->arg_scnprintf == NULL)
+ return -1;
+
+ if (sc->fmt)
+ sc->arg_parm = sc->fmt->arg_parm;
+
+ for (field = sc->args; field; field = field->next) {
+ if (sc->fmt && sc->fmt->arg_scnprintf[idx])
+ sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx];
+ else if (field->flags & FIELD_IS_POINTER)
+ sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex;
+ ++idx;
+ }
+
+ return 0;
+}
+
+static int trace__read_syscall_info(struct trace *trace, int id)
+{
+ char tp_name[128];
+ struct syscall *sc;
+ const char *name = audit_syscall_to_name(id, trace->audit.machine);
+
+ if (name == NULL)
+ return -1;
+
+ if (id > trace->syscalls.max) {
+ struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
+
+ if (nsyscalls == NULL)
+ return -1;
+
+ if (trace->syscalls.max != -1) {
+ memset(nsyscalls + trace->syscalls.max + 1, 0,
+ (id - trace->syscalls.max) * sizeof(*sc));
+ } else {
+ memset(nsyscalls, 0, (id + 1) * sizeof(*sc));
+ }
+
+ trace->syscalls.table = nsyscalls;
+ trace->syscalls.max = id;
+ }
+
+ sc = trace->syscalls.table + id;
+ sc->name = name;
+
+ if (trace->ev_qualifier) {
+ bool in = strlist__find(trace->ev_qualifier, name) != NULL;
+
+ if (!(in ^ trace->not_ev_qualifier)) {
+ sc->filtered = true;
+ /*
+ * No need to do read tracepoint information since this will be
+ * filtered out.
+ */
+ return 0;
+ }
+ }
+
+ sc->fmt = syscall_fmt__find(sc->name);
+
+ snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name);
+ sc->tp_format = trace_event__tp_format("syscalls", tp_name);
+
+ if (sc->tp_format == NULL && sc->fmt && sc->fmt->alias) {
+ snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias);
+ sc->tp_format = trace_event__tp_format("syscalls", tp_name);
+ }
+
+ if (sc->tp_format == NULL)
+ return -1;
+
+ sc->args = sc->tp_format->format.fields;
+ sc->nr_args = sc->tp_format->format.nr_fields;
+ /* drop nr field - not relevant here; does not exist on older kernels */
+ if (sc->args && strcmp(sc->args->name, "nr") == 0) {
+ sc->args = sc->args->next;
+ --sc->nr_args;
+ }
+
+ sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit");
+
+ return syscall__set_arg_fmts(sc);
+}
+
+/*
+ * args is to be interpreted as a series of longs but we need to handle
+ * 8-byte unaligned accesses. args points to raw_data within the event
+ * and raw_data is guaranteed to be 8-byte unaligned because it is
+ * preceded by raw_size which is a u32. So we need to copy args to a temp
+ * variable to read it. Most notably this avoids extended load instructions
+ * on unaligned addresses
+ */
+
+static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size,
+ unsigned char *args, struct trace *trace,
+ struct thread *thread)
+{
+ size_t printed = 0;
+ unsigned char *p;
+ unsigned long val;
+
+ if (sc->args != NULL) {
+ struct format_field *field;
+ u8 bit = 1;
+ struct syscall_arg arg = {
+ .idx = 0,
+ .mask = 0,
+ .trace = trace,
+ .thread = thread,
+ };
+
+ for (field = sc->args; field;
+ field = field->next, ++arg.idx, bit <<= 1) {
+ if (arg.mask & bit)
+ continue;
+
+ /* special care for unaligned accesses */
+ p = args + sizeof(unsigned long) * arg.idx;
+ memcpy(&val, p, sizeof(val));
+
+ /*
+ * Suppress this argument if its value is zero and
+ * and we don't have a string associated in an
+ * strarray for it.
+ */
+ if (val == 0 &&
+ !(sc->arg_scnprintf &&
+ sc->arg_scnprintf[arg.idx] == SCA_STRARRAY &&
+ sc->arg_parm[arg.idx]))
+ continue;
+
+ printed += scnprintf(bf + printed, size - printed,
+ "%s%s: ", printed ? ", " : "", field->name);
+ if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) {
+ arg.val = val;
+ if (sc->arg_parm)
+ arg.parm = sc->arg_parm[arg.idx];
+ printed += sc->arg_scnprintf[arg.idx](bf + printed,
+ size - printed, &arg);
+ } else {
+ printed += scnprintf(bf + printed, size - printed,
+ "%ld", val);
+ }
+ }
+ } else {
+ int i = 0;
+
+ while (i < 6) {
+ /* special care for unaligned accesses */
+ p = args + sizeof(unsigned long) * i;
+ memcpy(&val, p, sizeof(val));
+ printed += scnprintf(bf + printed, size - printed,
+ "%sarg%d: %ld",
+ printed ? ", " : "", i, val);
+ ++i;
+ }
+ }
+
+ return printed;
+}
+
+typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event,
+ struct perf_sample *sample);
+
+static struct syscall *trace__syscall_info(struct trace *trace,
+ struct perf_evsel *evsel, int id)
+{
+
+ if (id < 0) {
+
+ /*
+ * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried
+ * before that, leaving at a higher verbosity level till that is
+ * explained. Reproduced with plain ftrace with:
+ *
+ * echo 1 > /t/events/raw_syscalls/sys_exit/enable
+ * grep "NR -1 " /t/trace_pipe
+ *
+ * After generating some load on the machine.
+ */
+ if (verbose > 1) {
+ static u64 n;
+ fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n",
+ id, perf_evsel__name(evsel), ++n);
+ }
+ return NULL;
+ }
+
+ if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) &&
+ trace__read_syscall_info(trace, id))
+ goto out_cant_read;
+
+ if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL))
+ goto out_cant_read;
+
+ return &trace->syscalls.table[id];
+
+out_cant_read:
+ if (verbose) {
+ fprintf(trace->output, "Problems reading syscall %d", id);
+ if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
+ fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
+ fputs(" information\n", trace->output);
+ }
+ return NULL;
+}
+
+static void thread__update_stats(struct thread_trace *ttrace,
+ int id, struct perf_sample *sample)
+{
+ struct int_node *inode;
+ struct stats *stats;
+ u64 duration = 0;
+
+ inode = intlist__findnew(ttrace->syscall_stats, id);
+ if (inode == NULL)
+ return;
+
+ stats = inode->priv;
+ if (stats == NULL) {
+ stats = malloc(sizeof(struct stats));
+ if (stats == NULL)
+ return;
+ init_stats(stats);
+ inode->priv = stats;
+ }
+
+ if (ttrace->entry_time && sample->time > ttrace->entry_time)
+ duration = sample->time - ttrace->entry_time;
+
+ update_stats(stats, duration);
+}
+
+static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample)
+{
+ struct thread_trace *ttrace;
+ u64 duration;
+ size_t printed;
+
+ if (trace->current == NULL)
+ return 0;
+
+ ttrace = thread__priv(trace->current);
+
+ if (!ttrace->entry_pending)
+ return 0;
+
+ duration = sample->time - ttrace->entry_time;
+
+ printed = trace__fprintf_entry_head(trace, trace->current, duration, sample->time, trace->output);
+ printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str);
+ ttrace->entry_pending = false;
+
+ return printed;
+}
+
+static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample)
+{
+ char *msg;
+ void *args;
+ size_t printed = 0;
+ struct thread *thread;
+ int id = perf_evsel__sc_tp_uint(evsel, id, sample);
+ struct syscall *sc = trace__syscall_info(trace, evsel, id);
+ struct thread_trace *ttrace;
+
+ if (sc == NULL)
+ return -1;
+
+ if (sc->filtered)
+ return 0;
+
+ thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
+ ttrace = thread__trace(thread, trace->output);
+ if (ttrace == NULL)
+ return -1;
+
+ args = perf_evsel__sc_tp_ptr(evsel, args, sample);
+
+ if (ttrace->entry_str == NULL) {
+ ttrace->entry_str = malloc(1024);
+ if (!ttrace->entry_str)
+ return -1;
+ }
+
+ if (!trace->summary_only)
+ trace__printf_interrupted_entry(trace, sample);
+
+ ttrace->entry_time = sample->time;
+ msg = ttrace->entry_str;
+ printed += scnprintf(msg + printed, 1024 - printed, "%s(", sc->name);
+
+ printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed,
+ args, trace, thread);
+
+ if (sc->is_exit) {
+ if (!trace->duration_filter && !trace->summary_only) {
+ trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output);
+ fprintf(trace->output, "%-70s\n", ttrace->entry_str);
+ }
+ } else
+ ttrace->entry_pending = true;
+
+ if (trace->current != thread) {
+ thread__put(trace->current);
+ trace->current = thread__get(thread);
+ }
+
+ return 0;
+}
+
+static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample)
+{
+ long ret;
+ u64 duration = 0;
+ struct thread *thread;
+ int id = perf_evsel__sc_tp_uint(evsel, id, sample);
+ struct syscall *sc = trace__syscall_info(trace, evsel, id);
+ struct thread_trace *ttrace;
+
+ if (sc == NULL)
+ return -1;
+
+ if (sc->filtered)
+ return 0;
+
+ thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
+ ttrace = thread__trace(thread, trace->output);
+ if (ttrace == NULL)
+ return -1;
+
+ if (trace->summary)
+ thread__update_stats(ttrace, id, sample);
+
+ ret = perf_evsel__sc_tp_uint(evsel, ret, sample);
+
+ if (id == trace->audit.open_id && ret >= 0 && trace->last_vfs_getname) {
+ trace__set_fd_pathname(thread, ret, trace->last_vfs_getname);
+ trace->last_vfs_getname = NULL;
+ ++trace->stats.vfs_getname;
+ }
+
+ ttrace->exit_time = sample->time;
+
+ if (ttrace->entry_time) {
+ duration = sample->time - ttrace->entry_time;
+ if (trace__filter_duration(trace, duration))
+ goto out;
+ } else if (trace->duration_filter)
+ goto out;
+
+ if (trace->summary_only)
+ goto out;
+
+ trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output);
+
+ if (ttrace->entry_pending) {
+ fprintf(trace->output, "%-70s", ttrace->entry_str);
+ } else {
+ fprintf(trace->output, " ... [");
+ color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued");
+ fprintf(trace->output, "]: %s()", sc->name);
+ }
+
+ if (sc->fmt == NULL) {
+signed_print:
+ fprintf(trace->output, ") = %ld", ret);
+ } else if (ret < 0 && sc->fmt->errmsg) {
+ char bf[STRERR_BUFSIZE];
+ const char *emsg = strerror_r(-ret, bf, sizeof(bf)),
+ *e = audit_errno_to_name(-ret);
+
+ fprintf(trace->output, ") = -1 %s %s", e, emsg);
+ } else if (ret == 0 && sc->fmt->timeout)
+ fprintf(trace->output, ") = 0 Timeout");
+ else if (sc->fmt->hexret)
+ fprintf(trace->output, ") = %#lx", ret);
+ else
+ goto signed_print;
+
+ fputc('\n', trace->output);
+out:
+ ttrace->entry_pending = false;
+
+ return 0;
+}
+
+static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample)
+{
+ trace->last_vfs_getname = perf_evsel__rawptr(evsel, sample, "pathname");
+ return 0;
+}
+
+static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample)
+{
+ u64 runtime = perf_evsel__intval(evsel, sample, "runtime");
+ double runtime_ms = (double)runtime / NSEC_PER_MSEC;
+ struct thread *thread = machine__findnew_thread(trace->host,
+ sample->pid,
+ sample->tid);
+ struct thread_trace *ttrace = thread__trace(thread, trace->output);
+
+ if (ttrace == NULL)
+ goto out_dump;
+
+ ttrace->runtime_ms += runtime_ms;
+ trace->runtime_ms += runtime_ms;
+ return 0;
+
+out_dump:
+ fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n",
+ evsel->name,
+ perf_evsel__strval(evsel, sample, "comm"),
+ (pid_t)perf_evsel__intval(evsel, sample, "pid"),
+ runtime,
+ perf_evsel__intval(evsel, sample, "vruntime"));
+ return 0;
+}
+
+static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel,
+ union perf_event *event __maybe_unused,
+ struct perf_sample *sample)
+{
+ trace__printf_interrupted_entry(trace, sample);
+ trace__fprintf_tstamp(trace, sample->time, trace->output);
+
+ if (trace->trace_syscalls)
+ fprintf(trace->output, "( ): ");
+
+ fprintf(trace->output, "%s:", evsel->name);
+
+ if (evsel->tp_format) {
+ event_format__fprintf(evsel->tp_format, sample->cpu,
+ sample->raw_data, sample->raw_size,
+ trace->output);
+ }
+
+ fprintf(trace->output, ")\n");
+ return 0;
+}
+
+static void print_location(FILE *f, struct perf_sample *sample,
+ struct addr_location *al,
+ bool print_dso, bool print_sym)
+{
+
+ if ((verbose || print_dso) && al->map)
+ fprintf(f, "%s@", al->map->dso->long_name);
+
+ if ((verbose || print_sym) && al->sym)
+ fprintf(f, "%s+0x%" PRIx64, al->sym->name,
+ al->addr - al->sym->start);
+ else if (al->map)
+ fprintf(f, "0x%" PRIx64, al->addr);
+ else
+ fprintf(f, "0x%" PRIx64, sample->addr);
+}
+
+static int trace__pgfault(struct trace *trace,
+ struct perf_evsel *evsel,
+ union perf_event *event,
+ struct perf_sample *sample)
+{
+ struct thread *thread;
+ u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ struct addr_location al;
+ char map_type = 'd';
+ struct thread_trace *ttrace;
+
+ thread = machine__findnew_thread(trace->host, sample->pid, sample->tid);
+ ttrace = thread__trace(thread, trace->output);
+ if (ttrace == NULL)
+ return -1;
+
+ if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)
+ ttrace->pfmaj++;
+ else
+ ttrace->pfmin++;
+
+ if (trace->summary_only)
+ return 0;
+
+ thread__find_addr_location(thread, cpumode, MAP__FUNCTION,
+ sample->ip, &al);
+
+ trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output);
+
+ fprintf(trace->output, "%sfault [",
+ evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ?
+ "maj" : "min");
+
+ print_location(trace->output, sample, &al, false, true);
+
+ fprintf(trace->output, "] => ");
+
+ thread__find_addr_location(thread, cpumode, MAP__VARIABLE,
+ sample->addr, &al);
+
+ if (!al.map) {
+ thread__find_addr_location(thread, cpumode,
+ MAP__FUNCTION, sample->addr, &al);
+
+ if (al.map)
+ map_type = 'x';
+ else
+ map_type = '?';
+ }
+
+ print_location(trace->output, sample, &al, true, false);
+
+ fprintf(trace->output, " (%c%c)\n", map_type, al.level);
+
+ return 0;
+}
+
+static bool skip_sample(struct trace *trace, struct perf_sample *sample)
+{
+ if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) ||
+ (trace->tid_list && intlist__find(trace->tid_list, sample->tid)))
+ return false;
+
+ if (trace->pid_list || trace->tid_list)
+ return true;
+
+ return false;
+}
+
+static int trace__process_sample(struct perf_tool *tool,
+ union perf_event *event,
+ struct perf_sample *sample,
+ struct perf_evsel *evsel,
+ struct machine *machine __maybe_unused)
+{
+ struct trace *trace = container_of(tool, struct trace, tool);
+ int err = 0;
+
+ tracepoint_handler handler = evsel->handler;
+
+ if (skip_sample(trace, sample))
+ return 0;
+
+ if (!trace->full_time && trace->base_time == 0)
+ trace->base_time = sample->time;
+
+ if (handler) {
+ ++trace->nr_events;
+ handler(trace, evsel, event, sample);
+ }
+
+ return err;
+}
+
+static int parse_target_str(struct trace *trace)
+{
+ if (trace->opts.target.pid) {
+ trace->pid_list = intlist__new(trace->opts.target.pid);
+ if (trace->pid_list == NULL) {
+ pr_err("Error parsing process id string\n");
+ return -EINVAL;
+ }
+ }
+
+ if (trace->opts.target.tid) {
+ trace->tid_list = intlist__new(trace->opts.target.tid);
+ if (trace->tid_list == NULL) {
+ pr_err("Error parsing thread id string\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int trace__record(struct trace *trace, int argc, const char **argv)
+{
+ unsigned int rec_argc, i, j;
+ const char **rec_argv;
+ const char * const record_args[] = {
+ "record",
+ "-R",
+ "-m", "1024",
+ "-c", "1",
+ };
+
+ const char * const sc_args[] = { "-e", };
+ unsigned int sc_args_nr = ARRAY_SIZE(sc_args);
+ const char * const majpf_args[] = { "-e", "major-faults" };
+ unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args);
+ const char * const minpf_args[] = { "-e", "minor-faults" };
+ unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args);
+
+ /* +1 is for the event string below */
+ rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 +
+ majpf_args_nr + minpf_args_nr + argc;
+ rec_argv = calloc(rec_argc + 1, sizeof(char *));
+
+ if (rec_argv == NULL)
+ return -ENOMEM;
+
+ j = 0;
+ for (i = 0; i < ARRAY_SIZE(record_args); i++)
+ rec_argv[j++] = record_args[i];
+
+ if (trace->trace_syscalls) {
+ for (i = 0; i < sc_args_nr; i++)
+ rec_argv[j++] = sc_args[i];
+
+ /* event string may be different for older kernels - e.g., RHEL6 */
+ if (is_valid_tracepoint("raw_syscalls:sys_enter"))
+ rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit";
+ else if (is_valid_tracepoint("syscalls:sys_enter"))
+ rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit";
+ else {
+ pr_err("Neither raw_syscalls nor syscalls events exist.\n");
+ return -1;
+ }
+ }
+
+ if (trace->trace_pgfaults & TRACE_PFMAJ)
+ for (i = 0; i < majpf_args_nr; i++)
+ rec_argv[j++] = majpf_args[i];
+
+ if (trace->trace_pgfaults & TRACE_PFMIN)
+ for (i = 0; i < minpf_args_nr; i++)
+ rec_argv[j++] = minpf_args[i];
+
+ for (i = 0; i < (unsigned int)argc; i++)
+ rec_argv[j++] = argv[i];
+
+ return cmd_record(j, rec_argv, NULL);
+}
+
+static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp);
+
+static void perf_evlist__add_vfs_getname(struct perf_evlist *evlist)
+{
+ struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname");
+ if (evsel == NULL)
+ return;
+
+ if (perf_evsel__field(evsel, "pathname") == NULL) {
+ perf_evsel__delete(evsel);
+ return;
+ }
+
+ evsel->handler = trace__vfs_getname;
+ perf_evlist__add(evlist, evsel);
+}
+
+static int perf_evlist__add_pgfault(struct perf_evlist *evlist,
+ u64 config)
+{
+ struct perf_evsel *evsel;
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_SOFTWARE,
+ .mmap_data = 1,
+ };
+
+ attr.config = config;
+ attr.sample_period = 1;
+
+ event_attr_init(&attr);
+
+ evsel = perf_evsel__new(&attr);
+ if (!evsel)
+ return -ENOMEM;
+
+ evsel->handler = trace__pgfault;
+ perf_evlist__add(evlist, evsel);
+
+ return 0;
+}
+
+static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
+{
+ const u32 type = event->header.type;
+ struct perf_evsel *evsel;
+
+ if (!trace->full_time && trace->base_time == 0)
+ trace->base_time = sample->time;
+
+ if (type != PERF_RECORD_SAMPLE) {
+ trace__process_event(trace, trace->host, event, sample);
+ return;
+ }
+
+ evsel = perf_evlist__id2evsel(trace->evlist, sample->id);
+ if (evsel == NULL) {
+ fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id);
+ return;
+ }
+
+ if (evsel->attr.type == PERF_TYPE_TRACEPOINT &&
+ sample->raw_data == NULL) {
+ fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n",
+ perf_evsel__name(evsel), sample->tid,
+ sample->cpu, sample->raw_size);
+ } else {
+ tracepoint_handler handler = evsel->handler;
+ handler(trace, evsel, event, sample);
+ }
+}
+
+static int trace__run(struct trace *trace, int argc, const char **argv)
+{
+ struct perf_evlist *evlist = trace->evlist;
+ int err = -1, i;
+ unsigned long before;
+ const bool forks = argc > 0;
+ bool draining = false;
+
+ trace->live = true;
+
+ if (trace->trace_syscalls &&
+ perf_evlist__add_syscall_newtp(evlist, trace__sys_enter,
+ trace__sys_exit))
+ goto out_error_raw_syscalls;
+
+ if (trace->trace_syscalls)
+ perf_evlist__add_vfs_getname(evlist);
+
+ if ((trace->trace_pgfaults & TRACE_PFMAJ) &&
+ perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) {
+ goto out_error_mem;
+ }
+
+ if ((trace->trace_pgfaults & TRACE_PFMIN) &&
+ perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN))
+ goto out_error_mem;
+
+ if (trace->sched &&
+ perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime",
+ trace__sched_stat_runtime))
+ goto out_error_sched_stat_runtime;
+
+ err = perf_evlist__create_maps(evlist, &trace->opts.target);
+ if (err < 0) {
+ fprintf(trace->output, "Problems parsing the target to trace, check your options!\n");
+ goto out_delete_evlist;
+ }
+
+ err = trace__symbols_init(trace, evlist);
+ if (err < 0) {
+ fprintf(trace->output, "Problems initializing symbol libraries!\n");
+ goto out_delete_evlist;
+ }
+
+ perf_evlist__config(evlist, &trace->opts);
+
+ signal(SIGCHLD, sig_handler);
+ signal(SIGINT, sig_handler);
+
+ if (forks) {
+ err = perf_evlist__prepare_workload(evlist, &trace->opts.target,
+ argv, false, NULL);
+ if (err < 0) {
+ fprintf(trace->output, "Couldn't run the workload!\n");
+ goto out_delete_evlist;
+ }
+ }
+
+ err = perf_evlist__open(evlist);
+ if (err < 0)
+ goto out_error_open;
+
+ /*
+ * Better not use !target__has_task() here because we need to cover the
+ * case where no threads were specified in the command line, but a
+ * workload was, and in that case we will fill in the thread_map when
+ * we fork the workload in perf_evlist__prepare_workload.
+ */
+ if (trace->filter_pids.nr > 0)
+ err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries);
+ else if (evlist->threads->map[0] == -1)
+ err = perf_evlist__set_filter_pid(evlist, getpid());
+
+ if (err < 0) {
+ printf("err=%d,%s\n", -err, strerror(-err));
+ exit(1);
+ }
+
+ err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false);
+ if (err < 0)
+ goto out_error_mmap;
+
+ if (!target__none(&trace->opts.target))
+ perf_evlist__enable(evlist);
+
+ if (forks)
+ perf_evlist__start_workload(evlist);
+
+ trace->multiple_threads = evlist->threads->map[0] == -1 ||
+ evlist->threads->nr > 1 ||
+ perf_evlist__first(evlist)->attr.inherit;
+again:
+ before = trace->nr_events;
+
+ for (i = 0; i < evlist->nr_mmaps; i++) {
+ union perf_event *event;
+
+ while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
+ struct perf_sample sample;
+
+ ++trace->nr_events;
+
+ err = perf_evlist__parse_sample(evlist, event, &sample);
+ if (err) {
+ fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err);
+ goto next_event;
+ }
+
+ trace__handle_event(trace, event, &sample);
+next_event:
+ perf_evlist__mmap_consume(evlist, i);
+
+ if (interrupted)
+ goto out_disable;
+
+ if (done && !draining) {
+ perf_evlist__disable(evlist);
+ draining = true;
+ }
+ }
+ }
+
+ if (trace->nr_events == before) {
+ int timeout = done ? 100 : -1;
+
+ if (!draining && perf_evlist__poll(evlist, timeout) > 0) {
+ if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0)
+ draining = true;
+
+ goto again;
+ }
+ } else {
+ goto again;
+ }
+
+out_disable:
+ thread__zput(trace->current);
+
+ perf_evlist__disable(evlist);
+
+ if (!err) {
+ if (trace->summary)
+ trace__fprintf_thread_summary(trace, trace->output);
+
+ if (trace->show_tool_stats) {
+ fprintf(trace->output, "Stats:\n "
+ " vfs_getname : %" PRIu64 "\n"
+ " proc_getname: %" PRIu64 "\n",
+ trace->stats.vfs_getname,
+ trace->stats.proc_getname);
+ }
+ }
+
+out_delete_evlist:
+ perf_evlist__delete(evlist);
+ trace->evlist = NULL;
+ trace->live = false;
+ return err;
+{
+ char errbuf[BUFSIZ];
+
+out_error_sched_stat_runtime:
+ debugfs__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime");
+ goto out_error;
+
+out_error_raw_syscalls:
+ debugfs__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)");
+ goto out_error;
+
+out_error_mmap:
+ perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf));
+ goto out_error;
+
+out_error_open:
+ perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf));
+
+out_error:
+ fprintf(trace->output, "%s\n", errbuf);
+ goto out_delete_evlist;
+}
+out_error_mem:
+ fprintf(trace->output, "Not enough memory to run!\n");
+ goto out_delete_evlist;
+}
+
+static int trace__replay(struct trace *trace)
+{
+ const struct perf_evsel_str_handler handlers[] = {
+ { "probe:vfs_getname", trace__vfs_getname, },
+ };
+ struct perf_data_file file = {
+ .path = input_name,
+ .mode = PERF_DATA_MODE_READ,
+ .force = trace->force,
+ };
+ struct perf_session *session;
+ struct perf_evsel *evsel;
+ int err = -1;
+
+ trace->tool.sample = trace__process_sample;
+ trace->tool.mmap = perf_event__process_mmap;
+ trace->tool.mmap2 = perf_event__process_mmap2;
+ trace->tool.comm = perf_event__process_comm;
+ trace->tool.exit = perf_event__process_exit;
+ trace->tool.fork = perf_event__process_fork;
+ trace->tool.attr = perf_event__process_attr;
+ trace->tool.tracing_data = perf_event__process_tracing_data;
+ trace->tool.build_id = perf_event__process_build_id;
+
+ trace->tool.ordered_events = true;
+ trace->tool.ordering_requires_timestamps = true;
+
+ /* add tid to output */
+ trace->multiple_threads = true;
+
+ session = perf_session__new(&file, false, &trace->tool);
+ if (session == NULL)
+ return -1;
+
+ if (symbol__init(&session->header.env) < 0)
+ goto out;
+
+ trace->host = &session->machines.host;
+
+ err = perf_session__set_tracepoints_handlers(session, handlers);
+ if (err)
+ goto out;
+
+ evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
+ "raw_syscalls:sys_enter");
+ /* older kernels have syscalls tp versus raw_syscalls */
+ if (evsel == NULL)
+ evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
+ "syscalls:sys_enter");
+
+ if (evsel &&
+ (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 ||
+ perf_evsel__init_sc_tp_ptr_field(evsel, args))) {
+ pr_err("Error during initialize raw_syscalls:sys_enter event\n");
+ goto out;
+ }
+
+ evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
+ "raw_syscalls:sys_exit");
+ if (evsel == NULL)
+ evsel = perf_evlist__find_tracepoint_by_name(session->evlist,
+ "syscalls:sys_exit");
+ if (evsel &&
+ (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 ||
+ perf_evsel__init_sc_tp_uint_field(evsel, ret))) {
+ pr_err("Error during initialize raw_syscalls:sys_exit event\n");
+ goto out;
+ }
+
+ evlist__for_each(session->evlist, evsel) {
+ if (evsel->attr.type == PERF_TYPE_SOFTWARE &&
+ (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ||
+ evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
+ evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS))
+ evsel->handler = trace__pgfault;
+ }
+
+ err = parse_target_str(trace);
+ if (err != 0)
+ goto out;
+
+ setup_pager();
+
+ err = perf_session__process_events(session);
+ if (err)
+ pr_err("Failed to process events, error %d", err);
+
+ else if (trace->summary)
+ trace__fprintf_thread_summary(trace, trace->output);
+
+out:
+ perf_session__delete(session);
+
+ return err;
+}
+
+static size_t trace__fprintf_threads_header(FILE *fp)
+{
+ size_t printed;
+
+ printed = fprintf(fp, "\n Summary of events:\n\n");
+
+ return printed;
+}
+
+static size_t thread__dump_stats(struct thread_trace *ttrace,
+ struct trace *trace, FILE *fp)
+{
+ struct stats *stats;
+ size_t printed = 0;
+ struct syscall *sc;
+ struct int_node *inode = intlist__first(ttrace->syscall_stats);
+
+ if (inode == NULL)
+ return 0;
+
+ printed += fprintf(fp, "\n");
+
+ printed += fprintf(fp, " syscall calls min avg max stddev\n");
+ printed += fprintf(fp, " (msec) (msec) (msec) (%%)\n");
+ printed += fprintf(fp, " --------------- -------- --------- --------- --------- ------\n");
+
+ /* each int_node is a syscall */
+ while (inode) {
+ stats = inode->priv;
+ if (stats) {
+ double min = (double)(stats->min) / NSEC_PER_MSEC;
+ double max = (double)(stats->max) / NSEC_PER_MSEC;
+ double avg = avg_stats(stats);
+ double pct;
+ u64 n = (u64) stats->n;
+
+ pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0;
+ avg /= NSEC_PER_MSEC;
+
+ sc = &trace->syscalls.table[inode->i];
+ printed += fprintf(fp, " %-15s", sc->name);
+ printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f",
+ n, min, avg);
+ printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);
+ }
+
+ inode = intlist__next(inode);
+ }
+
+ printed += fprintf(fp, "\n\n");
+
+ return printed;
+}
+
+/* struct used to pass data to per-thread function */
+struct summary_data {
+ FILE *fp;
+ struct trace *trace;
+ size_t printed;
+};
+
+static int trace__fprintf_one_thread(struct thread *thread, void *priv)
+{
+ struct summary_data *data = priv;
+ FILE *fp = data->fp;
+ size_t printed = data->printed;
+ struct trace *trace = data->trace;
+ struct thread_trace *ttrace = thread__priv(thread);
+ double ratio;
+
+ if (ttrace == NULL)
+ return 0;
+
+ ratio = (double)ttrace->nr_events / trace->nr_events * 100.0;
+
+ printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid);
+ printed += fprintf(fp, "%lu events, ", ttrace->nr_events);
+ printed += fprintf(fp, "%.1f%%", ratio);
+ if (ttrace->pfmaj)
+ printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj);
+ if (ttrace->pfmin)
+ printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin);
+ printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms);
+ printed += thread__dump_stats(ttrace, trace, fp);
+
+ data->printed += printed;
+
+ return 0;
+}
+
+static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp)
+{
+ struct summary_data data = {
+ .fp = fp,
+ .trace = trace
+ };
+ data.printed = trace__fprintf_threads_header(fp);
+
+ machine__for_each_thread(trace->host, trace__fprintf_one_thread, &data);
+
+ return data.printed;
+}
+
+static int trace__set_duration(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ struct trace *trace = opt->value;
+
+ trace->duration_filter = atof(str);
+ return 0;
+}
+
+static int trace__set_filter_pids(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ int ret = -1;
+ size_t i;
+ struct trace *trace = opt->value;
+ /*
+ * FIXME: introduce a intarray class, plain parse csv and create a
+ * { int nr, int entries[] } struct...
+ */
+ struct intlist *list = intlist__new(str);
+
+ if (list == NULL)
+ return -1;
+
+ i = trace->filter_pids.nr = intlist__nr_entries(list) + 1;
+ trace->filter_pids.entries = calloc(i, sizeof(pid_t));
+
+ if (trace->filter_pids.entries == NULL)
+ goto out;
+
+ trace->filter_pids.entries[0] = getpid();
+
+ for (i = 1; i < trace->filter_pids.nr; ++i)
+ trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i;
+
+ intlist__delete(list);
+ ret = 0;
+out:
+ return ret;
+}
+
+static int trace__open_output(struct trace *trace, const char *filename)
+{
+ struct stat st;
+
+ if (!stat(filename, &st) && st.st_size) {
+ char oldname[PATH_MAX];
+
+ scnprintf(oldname, sizeof(oldname), "%s.old", filename);
+ unlink(oldname);
+ rename(filename, oldname);
+ }
+
+ trace->output = fopen(filename, "w");
+
+ return trace->output == NULL ? -errno : 0;
+}
+
+static int parse_pagefaults(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ int *trace_pgfaults = opt->value;
+
+ if (strcmp(str, "all") == 0)
+ *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN;
+ else if (strcmp(str, "maj") == 0)
+ *trace_pgfaults |= TRACE_PFMAJ;
+ else if (strcmp(str, "min") == 0)
+ *trace_pgfaults |= TRACE_PFMIN;
+ else
+ return -1;
+
+ return 0;
+}
+
+static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler)
+{
+ struct perf_evsel *evsel;
+
+ evlist__for_each(evlist, evsel)
+ evsel->handler = handler;
+}
+
+int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
+{
+ const char *trace_usage[] = {
+ "perf trace [<options>] [<command>]",
+ "perf trace [<options>] -- <command> [<options>]",
+ "perf trace record [<options>] [<command>]",
+ "perf trace record [<options>] -- <command> [<options>]",
+ NULL
+ };
+ struct trace trace = {
+ .audit = {
+ .machine = audit_detect_machine(),
+ .open_id = audit_name_to_syscall("open", trace.audit.machine),
+ },
+ .syscalls = {
+ . max = -1,
+ },
+ .opts = {
+ .target = {
+ .uid = UINT_MAX,
+ .uses_mmap = true,
+ },
+ .user_freq = UINT_MAX,
+ .user_interval = ULLONG_MAX,
+ .no_buffering = true,
+ .mmap_pages = UINT_MAX,
+ },
+ .output = stdout,
+ .show_comm = true,
+ .trace_syscalls = true,
+ };
+ const char *output_name = NULL;
+ const char *ev_qualifier_str = NULL;
+ const struct option trace_options[] = {
+ OPT_CALLBACK(0, "event", &trace.evlist, "event",
+ "event selector. use 'perf list' to list available events",
+ parse_events_option),
+ OPT_BOOLEAN(0, "comm", &trace.show_comm,
+ "show the thread COMM next to its id"),
+ OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"),
+ OPT_STRING('e', "expr", &ev_qualifier_str, "expr",
+ "list of events to trace"),
+ OPT_STRING('o', "output", &output_name, "file", "output file name"),
+ OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"),
+ OPT_STRING('p', "pid", &trace.opts.target.pid, "pid",
+ "trace events on existing process id"),
+ OPT_STRING('t', "tid", &trace.opts.target.tid, "tid",
+ "trace events on existing thread id"),
+ OPT_CALLBACK(0, "filter-pids", &trace, "float",
+ "show only events with duration > N.M ms", trace__set_filter_pids),
+ OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide,
+ "system-wide collection from all CPUs"),
+ OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu",
+ "list of cpus to monitor"),
+ OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit,
+ "child tasks do not inherit counters"),
+ OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages",
+ "number of mmap data pages",
+ perf_evlist__parse_mmap_pages),
+ OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user",
+ "user to profile"),
+ OPT_CALLBACK(0, "duration", &trace, "float",
+ "show only events with duration > N.M ms",
+ trace__set_duration),
+ OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
+ OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+ OPT_BOOLEAN('T', "time", &trace.full_time,
+ "Show full timestamp, not time relative to first start"),
+ OPT_BOOLEAN('s', "summary", &trace.summary_only,
+ "Show only syscall summary with statistics"),
+ OPT_BOOLEAN('S', "with-summary", &trace.summary,
+ "Show all syscalls and summary with statistics"),
+ OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min",
+ "Trace pagefaults", parse_pagefaults, "maj"),
+ OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"),
+ OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"),
+ OPT_END()
+ };
+ const char * const trace_subcommands[] = { "record", NULL };
+ int err;
+ char bf[BUFSIZ];
+
+ signal(SIGSEGV, sighandler_dump_stack);
+ signal(SIGFPE, sighandler_dump_stack);
+
+ trace.evlist = perf_evlist__new();
+ if (trace.evlist == NULL)
+ return -ENOMEM;
+
+ if (trace.evlist == NULL) {
+ pr_err("Not enough memory to run!\n");
+ goto out;
+ }
+
+ argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands,
+ trace_usage, PARSE_OPT_STOP_AT_NON_OPTION);
+
+ if (trace.trace_pgfaults) {
+ trace.opts.sample_address = true;
+ trace.opts.sample_time = true;
+ }
+
+ if (trace.evlist->nr_entries > 0)
+ evlist__set_evsel_handler(trace.evlist, trace__event_handler);
+
+ if ((argc >= 1) && (strcmp(argv[0], "record") == 0))
+ return trace__record(&trace, argc-1, &argv[1]);
+
+ /* summary_only implies summary option, but don't overwrite summary if set */
+ if (trace.summary_only)
+ trace.summary = trace.summary_only;
+
+ if (!trace.trace_syscalls && !trace.trace_pgfaults &&
+ trace.evlist->nr_entries == 0 /* Was --events used? */) {
+ pr_err("Please specify something to trace.\n");
+ return -1;
+ }
+
+ if (output_name != NULL) {
+ err = trace__open_output(&trace, output_name);
+ if (err < 0) {
+ perror("failed to create output file");
+ goto out;
+ }
+ }
+
+ if (ev_qualifier_str != NULL) {
+ const char *s = ev_qualifier_str;
+
+ trace.not_ev_qualifier = *s == '!';
+ if (trace.not_ev_qualifier)
+ ++s;
+ trace.ev_qualifier = strlist__new(true, s);
+ if (trace.ev_qualifier == NULL) {
+ fputs("Not enough memory to parse event qualifier",
+ trace.output);
+ err = -ENOMEM;
+ goto out_close;
+ }
+ }
+
+ err = target__validate(&trace.opts.target);
+ if (err) {
+ target__strerror(&trace.opts.target, err, bf, sizeof(bf));
+ fprintf(trace.output, "%s", bf);
+ goto out_close;
+ }
+
+ err = target__parse_uid(&trace.opts.target);
+ if (err) {
+ target__strerror(&trace.opts.target, err, bf, sizeof(bf));
+ fprintf(trace.output, "%s", bf);
+ goto out_close;
+ }
+
+ if (!argc && target__none(&trace.opts.target))
+ trace.opts.target.system_wide = true;
+
+ if (input_name)
+ err = trace__replay(&trace);
+ else
+ err = trace__run(&trace, argc, argv);
+
+out_close:
+ if (output_name != NULL)
+ fclose(trace.output);
+out:
+ return err;
+}