diff options
Diffstat (limited to 'kernel/drivers/staging/lustre/lustre/libcfs/module.c')
| -rw-r--r-- | kernel/drivers/staging/lustre/lustre/libcfs/module.c | 976 |
1 files changed, 976 insertions, 0 deletions
diff --git a/kernel/drivers/staging/lustre/lustre/libcfs/module.c b/kernel/drivers/staging/lustre/lustre/libcfs/module.c new file mode 100644 index 000000000..f0ee76abf --- /dev/null +++ b/kernel/drivers/staging/lustre/lustre/libcfs/module.c @@ -0,0 +1,976 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2012, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/string.h> +#include <linux/stat.h> +#include <linux/errno.h> +#include <linux/unistd.h> +#include <net/sock.h> +#include <linux/uio.h> + +#include <linux/uaccess.h> + +#include <linux/fs.h> +#include <linux/file.h> +#include <linux/list.h> + +#include <linux/proc_fs.h> +#include <linux/sysctl.h> + +# define DEBUG_SUBSYSTEM S_LNET + +#include "../../include/linux/libcfs/libcfs.h" +#include <asm/div64.h> + +#include "../../include/linux/libcfs/libcfs_crypto.h" +#include "../../include/linux/lnet/lib-lnet.h" +#include "../../include/linux/lnet/lnet.h" +#include "tracefile.h" + +MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>"); +MODULE_DESCRIPTION("Portals v3.1"); +MODULE_LICENSE("GPL"); + +extern struct miscdevice libcfs_dev; +extern struct rw_semaphore cfs_tracefile_sem; +extern struct mutex cfs_trace_thread_mutex; +extern struct cfs_wi_sched *cfs_sched_rehash; +extern void libcfs_init_nidstrings(void); + +static int insert_proc(void); +static void remove_proc(void); + +static struct ctl_table_header *lnet_table_header; +extern char lnet_upcall[1024]; +/** + * The path of debug log dump upcall script. + */ +extern char lnet_debug_log_upcall[1024]; + +#define CTL_LNET (0x100) + +enum { + PSDEV_DEBUG = 1, /* control debugging */ + PSDEV_SUBSYSTEM_DEBUG, /* control debugging */ + PSDEV_PRINTK, /* force all messages to console */ + PSDEV_CONSOLE_RATELIMIT, /* ratelimit console messages */ + PSDEV_CONSOLE_MAX_DELAY_CS, /* maximum delay over which we skip messages */ + PSDEV_CONSOLE_MIN_DELAY_CS, /* initial delay over which we skip messages */ + PSDEV_CONSOLE_BACKOFF, /* delay increase factor */ + PSDEV_DEBUG_PATH, /* crashdump log location */ + PSDEV_DEBUG_DUMP_PATH, /* crashdump tracelog location */ + PSDEV_CPT_TABLE, /* information about cpu partitions */ + PSDEV_LNET_UPCALL, /* User mode upcall script */ + PSDEV_LNET_MEMUSED, /* bytes currently PORTAL_ALLOCated */ + PSDEV_LNET_CATASTROPHE, /* if we have LBUGged or panic'd */ + PSDEV_LNET_PANIC_ON_LBUG, /* flag to panic on LBUG */ + PSDEV_LNET_DUMP_KERNEL, /* snapshot kernel debug buffer to file */ + PSDEV_LNET_DAEMON_FILE, /* spool kernel debug buffer to file */ + PSDEV_LNET_DEBUG_MB, /* size of debug buffer */ + PSDEV_LNET_DEBUG_LOG_UPCALL, /* debug log upcall script */ + PSDEV_LNET_WATCHDOG_RATELIMIT, /* ratelimit watchdog messages */ + PSDEV_LNET_FORCE_LBUG, /* hook to force an LBUG */ + PSDEV_LNET_FAIL_LOC, /* control test failures instrumentation */ + PSDEV_LNET_FAIL_VAL, /* userdata for fail loc */ +}; + +static void kportal_memhog_free (struct libcfs_device_userstate *ldu) +{ + struct page **level0p = &ldu->ldu_memhog_root_page; + struct page **level1p; + struct page **level2p; + int count1; + int count2; + + if (*level0p != NULL) { + + level1p = (struct page **)page_address(*level0p); + count1 = 0; + + while (count1 < PAGE_CACHE_SIZE/sizeof(struct page *) && + *level1p != NULL) { + + level2p = (struct page **)page_address(*level1p); + count2 = 0; + + while (count2 < PAGE_CACHE_SIZE/sizeof(struct page *) && + *level2p != NULL) { + + __free_page(*level2p); + ldu->ldu_memhog_pages--; + level2p++; + count2++; + } + + __free_page(*level1p); + ldu->ldu_memhog_pages--; + level1p++; + count1++; + } + + __free_page(*level0p); + ldu->ldu_memhog_pages--; + + *level0p = NULL; + } + + LASSERT (ldu->ldu_memhog_pages == 0); +} + +static int kportal_memhog_alloc(struct libcfs_device_userstate *ldu, int npages, + gfp_t flags) +{ + struct page **level0p; + struct page **level1p; + struct page **level2p; + int count1; + int count2; + + LASSERT (ldu->ldu_memhog_pages == 0); + LASSERT (ldu->ldu_memhog_root_page == NULL); + + if (npages < 0) + return -EINVAL; + + if (npages == 0) + return 0; + + level0p = &ldu->ldu_memhog_root_page; + *level0p = alloc_page(flags); + if (*level0p == NULL) + return -ENOMEM; + ldu->ldu_memhog_pages++; + + level1p = (struct page **)page_address(*level0p); + count1 = 0; + memset(level1p, 0, PAGE_CACHE_SIZE); + + while (ldu->ldu_memhog_pages < npages && + count1 < PAGE_CACHE_SIZE/sizeof(struct page *)) { + + if (cfs_signal_pending()) + return -EINTR; + + *level1p = alloc_page(flags); + if (*level1p == NULL) + return -ENOMEM; + ldu->ldu_memhog_pages++; + + level2p = (struct page **)page_address(*level1p); + count2 = 0; + memset(level2p, 0, PAGE_CACHE_SIZE); + + while (ldu->ldu_memhog_pages < npages && + count2 < PAGE_CACHE_SIZE/sizeof(struct page *)) { + + if (cfs_signal_pending()) + return -EINTR; + + *level2p = alloc_page(flags); + if (*level2p == NULL) + return -ENOMEM; + ldu->ldu_memhog_pages++; + + level2p++; + count2++; + } + + level1p++; + count1++; + } + + return 0; +} + +/* called when opening /dev/device */ +static int libcfs_psdev_open(unsigned long flags, void *args) +{ + struct libcfs_device_userstate *ldu; + + try_module_get(THIS_MODULE); + + LIBCFS_ALLOC(ldu, sizeof(*ldu)); + if (ldu != NULL) { + ldu->ldu_memhog_pages = 0; + ldu->ldu_memhog_root_page = NULL; + } + *(struct libcfs_device_userstate **)args = ldu; + + return 0; +} + +/* called when closing /dev/device */ +static int libcfs_psdev_release(unsigned long flags, void *args) +{ + struct libcfs_device_userstate *ldu; + + ldu = (struct libcfs_device_userstate *)args; + if (ldu != NULL) { + kportal_memhog_free(ldu); + LIBCFS_FREE(ldu, sizeof(*ldu)); + } + + module_put(THIS_MODULE); + return 0; +} + +static struct rw_semaphore ioctl_list_sem; +static struct list_head ioctl_list; + +int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand) +{ + int rc = 0; + + down_write(&ioctl_list_sem); + if (!list_empty(&hand->item)) + rc = -EBUSY; + else + list_add_tail(&hand->item, &ioctl_list); + up_write(&ioctl_list_sem); + + return rc; +} +EXPORT_SYMBOL(libcfs_register_ioctl); + +int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand) +{ + int rc = 0; + + down_write(&ioctl_list_sem); + if (list_empty(&hand->item)) + rc = -ENOENT; + else + list_del_init(&hand->item); + up_write(&ioctl_list_sem); + + return rc; +} +EXPORT_SYMBOL(libcfs_deregister_ioctl); + +static int libcfs_ioctl_int(struct cfs_psdev_file *pfile, unsigned long cmd, + void *arg, struct libcfs_ioctl_data *data) +{ + int err = -EINVAL; + + switch (cmd) { + case IOC_LIBCFS_CLEAR_DEBUG: + libcfs_debug_clear_buffer(); + return 0; + /* + * case IOC_LIBCFS_PANIC: + * Handled in arch/cfs_module.c + */ + case IOC_LIBCFS_MARK_DEBUG: + if (data->ioc_inlbuf1 == NULL || + data->ioc_inlbuf1[data->ioc_inllen1 - 1] != '\0') + return -EINVAL; + libcfs_debug_mark_buffer(data->ioc_inlbuf1); + return 0; + case IOC_LIBCFS_MEMHOG: + if (pfile->private_data == NULL) { + err = -EINVAL; + } else { + kportal_memhog_free(pfile->private_data); + /* XXX The ioc_flags is not GFP flags now, need to be fixed */ + err = kportal_memhog_alloc(pfile->private_data, + data->ioc_count, + data->ioc_flags); + if (err != 0) + kportal_memhog_free(pfile->private_data); + } + break; + + case IOC_LIBCFS_PING_TEST: { + extern void (kping_client)(struct libcfs_ioctl_data *); + void (*ping)(struct libcfs_ioctl_data *); + + CDEBUG(D_IOCTL, "doing %d pings to nid %s (%s)\n", + data->ioc_count, libcfs_nid2str(data->ioc_nid), + libcfs_nid2str(data->ioc_nid)); + ping = symbol_get(kping_client); + if (!ping) + CERROR("symbol_get failed\n"); + else { + ping(data); + symbol_put(kping_client); + } + return 0; + } + + default: { + struct libcfs_ioctl_handler *hand; + err = -EINVAL; + down_read(&ioctl_list_sem); + list_for_each_entry(hand, &ioctl_list, item) { + err = hand->handle_ioctl(cmd, data); + if (err != -EINVAL) { + if (err == 0) + err = libcfs_ioctl_popdata(arg, + data, sizeof (*data)); + break; + } + } + up_read(&ioctl_list_sem); + break; + } + } + + return err; +} + +static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg) +{ + char *buf; + struct libcfs_ioctl_data *data; + int err = 0; + + LIBCFS_ALLOC_GFP(buf, 1024, GFP_IOFS); + if (buf == NULL) + return -ENOMEM; + + /* 'cmd' and permissions get checked in our arch-specific caller */ + if (libcfs_ioctl_getdata(buf, buf + 800, (void *)arg)) { + CERROR("PORTALS ioctl: data error\n"); + err = -EINVAL; + goto out; + } + data = (struct libcfs_ioctl_data *)buf; + + err = libcfs_ioctl_int(pfile, cmd, arg, data); + +out: + LIBCFS_FREE(buf, 1024); + return err; +} + + +struct cfs_psdev_ops libcfs_psdev_ops = { + libcfs_psdev_open, + libcfs_psdev_release, + NULL, + NULL, + libcfs_ioctl +}; + +static int init_libcfs_module(void) +{ + int rc; + + libcfs_arch_init(); + libcfs_init_nidstrings(); + init_rwsem(&cfs_tracefile_sem); + mutex_init(&cfs_trace_thread_mutex); + init_rwsem(&ioctl_list_sem); + INIT_LIST_HEAD(&ioctl_list); + init_waitqueue_head(&cfs_race_waitq); + + rc = libcfs_debug_init(5 * 1024 * 1024); + if (rc < 0) { + pr_err("LustreError: libcfs_debug_init: %d\n", rc); + return rc; + } + + rc = cfs_cpu_init(); + if (rc != 0) + goto cleanup_debug; + + rc = misc_register(&libcfs_dev); + if (rc) { + CERROR("misc_register: error %d\n", rc); + goto cleanup_cpu; + } + + rc = cfs_wi_startup(); + if (rc) { + CERROR("initialize workitem: error %d\n", rc); + goto cleanup_deregister; + } + + /* max to 4 threads, should be enough for rehash */ + rc = min(cfs_cpt_weight(cfs_cpt_table, CFS_CPT_ANY), 4); + rc = cfs_wi_sched_create("cfs_rh", cfs_cpt_table, CFS_CPT_ANY, + rc, &cfs_sched_rehash); + if (rc != 0) { + CERROR("Startup workitem scheduler: error: %d\n", rc); + goto cleanup_deregister; + } + + rc = cfs_crypto_register(); + if (rc) { + CERROR("cfs_crypto_register: error %d\n", rc); + goto cleanup_wi; + } + + + rc = insert_proc(); + if (rc) { + CERROR("insert_proc: error %d\n", rc); + goto cleanup_crypto; + } + + CDEBUG (D_OTHER, "portals setup OK\n"); + return 0; + cleanup_crypto: + cfs_crypto_unregister(); + cleanup_wi: + cfs_wi_shutdown(); + cleanup_deregister: + misc_deregister(&libcfs_dev); +cleanup_cpu: + cfs_cpu_fini(); + cleanup_debug: + libcfs_debug_cleanup(); + return rc; +} + +static void exit_libcfs_module(void) +{ + int rc; + + remove_proc(); + + CDEBUG(D_MALLOC, "before Portals cleanup: kmem %d\n", + atomic_read(&libcfs_kmemory)); + + if (cfs_sched_rehash != NULL) { + cfs_wi_sched_destroy(cfs_sched_rehash); + cfs_sched_rehash = NULL; + } + + cfs_crypto_unregister(); + cfs_wi_shutdown(); + + rc = misc_deregister(&libcfs_dev); + if (rc) + CERROR("misc_deregister error %d\n", rc); + + cfs_cpu_fini(); + + if (atomic_read(&libcfs_kmemory) != 0) + CERROR("Portals memory leaked: %d bytes\n", + atomic_read(&libcfs_kmemory)); + + rc = libcfs_debug_cleanup(); + if (rc) + pr_err("LustreError: libcfs_debug_cleanup: %d\n", rc); + + libcfs_arch_cleanup(); +} + +static int proc_call_handler(void *data, int write, loff_t *ppos, + void __user *buffer, size_t *lenp, + int (*handler)(void *data, int write, + loff_t pos, void __user *buffer, int len)) +{ + int rc = handler(data, write, *ppos, buffer, *lenp); + + if (rc < 0) + return rc; + + if (write) { + *ppos += *lenp; + } else { + *lenp = rc; + *ppos += rc; + } + return 0; +} + +static int __proc_dobitmasks(void *data, int write, + loff_t pos, void __user *buffer, int nob) +{ + const int tmpstrlen = 512; + char *tmpstr; + int rc; + unsigned int *mask = data; + int is_subsys = (mask == &libcfs_subsystem_debug) ? 1 : 0; + int is_printk = (mask == &libcfs_printk) ? 1 : 0; + + rc = cfs_trace_allocate_string_buffer(&tmpstr, tmpstrlen); + if (rc < 0) + return rc; + + if (!write) { + libcfs_debug_mask2str(tmpstr, tmpstrlen, *mask, is_subsys); + rc = strlen(tmpstr); + + if (pos >= rc) { + rc = 0; + } else { + rc = cfs_trace_copyout_string(buffer, nob, + tmpstr + pos, "\n"); + } + } else { + rc = cfs_trace_copyin_string(tmpstr, tmpstrlen, buffer, nob); + if (rc < 0) { + cfs_trace_free_string_buffer(tmpstr, tmpstrlen); + return rc; + } + + rc = libcfs_debug_str2mask(mask, tmpstr, is_subsys); + /* Always print LBUG/LASSERT to console, so keep this mask */ + if (is_printk) + *mask |= D_EMERG; + } + + cfs_trace_free_string_buffer(tmpstr, tmpstrlen); + return rc; +} + +static int proc_dobitmasks(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return proc_call_handler(table->data, write, ppos, buffer, lenp, + __proc_dobitmasks); +} + +static int min_watchdog_ratelimit; /* disable ratelimiting */ +static int max_watchdog_ratelimit = (24*60*60); /* limit to once per day */ + +static int __proc_dump_kernel(void *data, int write, + loff_t pos, void __user *buffer, int nob) +{ + if (!write) + return 0; + + return cfs_trace_dump_debug_buffer_usrstr(buffer, nob); +} + +static int proc_dump_kernel(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return proc_call_handler(table->data, write, ppos, buffer, lenp, + __proc_dump_kernel); +} + +static int __proc_daemon_file(void *data, int write, + loff_t pos, void __user *buffer, int nob) +{ + if (!write) { + int len = strlen(cfs_tracefile); + + if (pos >= len) + return 0; + + return cfs_trace_copyout_string(buffer, nob, + cfs_tracefile + pos, "\n"); + } + + return cfs_trace_daemon_command_usrstr(buffer, nob); +} + +static int proc_daemon_file(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return proc_call_handler(table->data, write, ppos, buffer, lenp, + __proc_daemon_file); +} + +static int __proc_debug_mb(void *data, int write, + loff_t pos, void __user *buffer, int nob) +{ + if (!write) { + char tmpstr[32]; + int len = snprintf(tmpstr, sizeof(tmpstr), "%d", + cfs_trace_get_debug_mb()); + + if (pos >= len) + return 0; + + return cfs_trace_copyout_string(buffer, nob, tmpstr + pos, + "\n"); + } + + return cfs_trace_set_debug_mb_usrstr(buffer, nob); +} + +static int proc_debug_mb(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return proc_call_handler(table->data, write, ppos, buffer, lenp, + __proc_debug_mb); +} + +static int proc_console_max_delay_cs(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos) +{ + int rc, max_delay_cs; + struct ctl_table dummy = *table; + long d; + + dummy.data = &max_delay_cs; + dummy.proc_handler = &proc_dointvec; + + if (!write) { /* read */ + max_delay_cs = cfs_duration_sec(libcfs_console_max_delay * 100); + rc = proc_dointvec(&dummy, write, buffer, lenp, ppos); + return rc; + } + + /* write */ + max_delay_cs = 0; + rc = proc_dointvec(&dummy, write, buffer, lenp, ppos); + if (rc < 0) + return rc; + if (max_delay_cs <= 0) + return -EINVAL; + + d = cfs_time_seconds(max_delay_cs) / 100; + if (d == 0 || d < libcfs_console_min_delay) + return -EINVAL; + libcfs_console_max_delay = d; + + return rc; +} + +static int proc_console_min_delay_cs(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos) +{ + int rc, min_delay_cs; + struct ctl_table dummy = *table; + long d; + + dummy.data = &min_delay_cs; + dummy.proc_handler = &proc_dointvec; + + if (!write) { /* read */ + min_delay_cs = cfs_duration_sec(libcfs_console_min_delay * 100); + rc = proc_dointvec(&dummy, write, buffer, lenp, ppos); + return rc; + } + + /* write */ + min_delay_cs = 0; + rc = proc_dointvec(&dummy, write, buffer, lenp, ppos); + if (rc < 0) + return rc; + if (min_delay_cs <= 0) + return -EINVAL; + + d = cfs_time_seconds(min_delay_cs) / 100; + if (d == 0 || d > libcfs_console_max_delay) + return -EINVAL; + libcfs_console_min_delay = d; + + return rc; +} + +static int proc_console_backoff(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + int rc, backoff; + struct ctl_table dummy = *table; + + dummy.data = &backoff; + dummy.proc_handler = &proc_dointvec; + + if (!write) { /* read */ + backoff = libcfs_console_backoff; + rc = proc_dointvec(&dummy, write, buffer, lenp, ppos); + return rc; + } + + /* write */ + backoff = 0; + rc = proc_dointvec(&dummy, write, buffer, lenp, ppos); + if (rc < 0) + return rc; + if (backoff <= 0) + return -EINVAL; + + libcfs_console_backoff = backoff; + + return rc; +} + +static int libcfs_force_lbug(struct ctl_table *table, int write, + void __user *buffer, + size_t *lenp, loff_t *ppos) +{ + if (write) + LBUG(); + return 0; +} + +static int proc_fail_loc(struct ctl_table *table, int write, + void __user *buffer, + size_t *lenp, loff_t *ppos) +{ + int rc; + long old_fail_loc = cfs_fail_loc; + + rc = proc_doulongvec_minmax(table, write, buffer, lenp, ppos); + if (old_fail_loc != cfs_fail_loc) + wake_up(&cfs_race_waitq); + return rc; +} + +static int __proc_cpt_table(void *data, int write, + loff_t pos, void __user *buffer, int nob) +{ + char *buf = NULL; + int len = 4096; + int rc = 0; + + if (write) + return -EPERM; + + LASSERT(cfs_cpt_table != NULL); + + while (1) { + LIBCFS_ALLOC(buf, len); + if (buf == NULL) + return -ENOMEM; + + rc = cfs_cpt_table_print(cfs_cpt_table, buf, len); + if (rc >= 0) + break; + + if (rc == -EFBIG) { + LIBCFS_FREE(buf, len); + len <<= 1; + continue; + } + goto out; + } + + if (pos >= rc) { + rc = 0; + goto out; + } + + rc = cfs_trace_copyout_string(buffer, nob, buf + pos, NULL); + out: + if (buf != NULL) + LIBCFS_FREE(buf, len); + return rc; +} + +static int proc_cpt_table(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + return proc_call_handler(table->data, write, ppos, buffer, lenp, + __proc_cpt_table); +} + +static struct ctl_table lnet_table[] = { + /* + * NB No .strategy entries have been provided since sysctl(8) prefers + * to go via /proc for portability. + */ + { + .procname = "debug", + .data = &libcfs_debug, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dobitmasks, + }, + { + .procname = "subsystem_debug", + .data = &libcfs_subsystem_debug, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dobitmasks, + }, + { + .procname = "printk", + .data = &libcfs_printk, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dobitmasks, + }, + { + .procname = "console_ratelimit", + .data = &libcfs_console_ratelimit, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + .procname = "console_max_delay_centisecs", + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_console_max_delay_cs + }, + { + .procname = "console_min_delay_centisecs", + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_console_min_delay_cs + }, + { + .procname = "console_backoff", + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_console_backoff + }, + + { + .procname = "debug_path", + .data = libcfs_debug_file_path_arr, + .maxlen = sizeof(libcfs_debug_file_path_arr), + .mode = 0644, + .proc_handler = &proc_dostring, + }, + + { + .procname = "cpu_partition_table", + .maxlen = 128, + .mode = 0444, + .proc_handler = &proc_cpt_table, + }, + + { + .procname = "upcall", + .data = lnet_upcall, + .maxlen = sizeof(lnet_upcall), + .mode = 0644, + .proc_handler = &proc_dostring, + }, + { + .procname = "debug_log_upcall", + .data = lnet_debug_log_upcall, + .maxlen = sizeof(lnet_debug_log_upcall), + .mode = 0644, + .proc_handler = &proc_dostring, + }, + { + .procname = "lnet_memused", + .data = (int *)&libcfs_kmemory.counter, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec, + }, + { + .procname = "catastrophe", + .data = &libcfs_catastrophe, + .maxlen = sizeof(int), + .mode = 0444, + .proc_handler = &proc_dointvec, + }, + { + .procname = "panic_on_lbug", + .data = &libcfs_panic_on_lbug, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, + { + .procname = "dump_kernel", + .maxlen = 256, + .mode = 0200, + .proc_handler = &proc_dump_kernel, + }, + { + .procname = "daemon_file", + .mode = 0644, + .maxlen = 256, + .proc_handler = &proc_daemon_file, + }, + { + .procname = "debug_mb", + .mode = 0644, + .proc_handler = &proc_debug_mb, + }, + { + .procname = "watchdog_ratelimit", + .data = &libcfs_watchdog_ratelimit, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .extra1 = &min_watchdog_ratelimit, + .extra2 = &max_watchdog_ratelimit, + }, + { + .procname = "force_lbug", + .data = NULL, + .maxlen = 0, + .mode = 0200, + .proc_handler = &libcfs_force_lbug + }, + { + .procname = "fail_loc", + .data = &cfs_fail_loc, + .maxlen = sizeof(cfs_fail_loc), + .mode = 0644, + .proc_handler = &proc_fail_loc + }, + { + .procname = "fail_val", + .data = &cfs_fail_val, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec + }, + { + } +}; + +static struct ctl_table top_table[] = { + { + .procname = "lnet", + .mode = 0555, + .data = NULL, + .maxlen = 0, + .child = lnet_table, + }, + { + } +}; + +static int insert_proc(void) +{ + if (lnet_table_header == NULL) + lnet_table_header = register_sysctl_table(top_table); + return 0; +} + +static void remove_proc(void) +{ + if (lnet_table_header != NULL) + unregister_sysctl_table(lnet_table_header); + + lnet_table_header = NULL; +} + +MODULE_VERSION("1.0.0"); + +module_init(init_libcfs_module); +module_exit(exit_libcfs_module); |