These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

3 files changed, 143 insertions, 11 deletions

diff --git a/kernel/arch/powerpc/xmon/nonstdio.c b/kernel/arch/powerpc/xmon/nonstdio.c
index c98748617..d00123421 100644
--- a/kernel/arch/powerpc/xmon/nonstdio.c
+++ b/kernel/arch/powerpc/xmon/nonstdio.c
@@ -11,10 +11,25 @@
 #include <asm/time.h>
 #include "nonstdio.h"
 
+static bool paginating, paginate_skipping;
+static unsigned long paginate_lpp; /* Lines Per Page */
+static unsigned long paginate_pos;
 
-static int xmon_write(const void *ptr, int nb)
+void xmon_start_pagination(void)
 {
-	return udbg_write(ptr, nb);
+	paginating = true;
+	paginate_skipping = false;
+	paginate_pos = 0;
+}
+
+void xmon_end_pagination(void)
+{
+	paginating = false;
+}
+
+void xmon_set_pagination_lpp(unsigned long lpp)
+{
+	paginate_lpp = lpp;
 }
 
 static int xmon_readchar(void)
@@ -24,6 +39,51 @@ static int xmon_readchar(void)
 	return -1;
 }
 
+static int xmon_write(const char *ptr, int nb)
+{
+	int rv = 0;
+	const char *p = ptr, *q;
+	const char msg[] = "[Hit a key (a:all, q:truncate, any:next page)]";
+
+	if (nb <= 0)
+		return rv;
+
+	if (paginating && paginate_skipping)
+		return nb;
+
+	if (paginate_lpp) {
+		while (paginating && (q = strchr(p, '\n'))) {
+			rv += udbg_write(p, q - p + 1);
+			p = q + 1;
+			paginate_pos++;
+
+			if (paginate_pos >= paginate_lpp) {
+				udbg_write(msg, strlen(msg));
+
+				switch (xmon_readchar()) {
+				case 'a':
+					paginating = false;
+					break;
+				case 'q':
+					paginate_skipping = true;
+					break;
+				default:
+					/* nothing */
+					break;
+				}
+
+				paginate_pos = 0;
+				udbg_write("\r\n", 2);
+
+				if (paginate_skipping)
+					return nb;
+			}
+		}
+	}
+
+	return rv + udbg_write(p, nb - (p - ptr));
+}
+
 int xmon_putchar(int c)
 {
 	char ch = c;
diff --git a/kernel/arch/powerpc/xmon/nonstdio.h b/kernel/arch/powerpc/xmon/nonstdio.h
index 18a51ded4..f86533656 100644
--- a/kernel/arch/powerpc/xmon/nonstdio.h
+++ b/kernel/arch/powerpc/xmon/nonstdio.h
@@ -3,6 +3,9 @@
 #define printf	xmon_printf
 #define putchar	xmon_putchar
 
+extern void xmon_set_pagination_lpp(unsigned long lpp);
+extern void xmon_start_pagination(void);
+extern void xmon_end_pagination(void);
 extern int xmon_putchar(int c);
 extern void xmon_puts(const char *);
 extern char *xmon_gets(char *, int);
diff --git a/kernel/arch/powerpc/xmon/xmon.c b/kernel/arch/powerpc/xmon/xmon.c
index e599259d8..786bf0169 100644
--- a/kernel/arch/powerpc/xmon/xmon.c
+++ b/kernel/arch/powerpc/xmon/xmon.c
@@ -242,6 +242,7 @@ Commands:\n\
 "  u	dump TLB\n"
 #endif
 "  ?	help\n"
+"  # n	limit output to n lines per page (for dp, dpa, dl)\n"
 "  zr	reboot\n\
   zh	halt\n"
 ;
@@ -833,6 +834,16 @@ static void remove_cpu_bpts(void)
 	write_ciabr(0);
 }
 
+static void set_lpp_cmd(void)
+{
+	unsigned long lpp;
+
+	if (!scanhex(&lpp)) {
+		printf("Invalid number.\n");
+		lpp = 0;
+	}
+	xmon_set_pagination_lpp(lpp);
+}
 /* Command interpreting routine */
 static char *last_cmd;
 
@@ -924,6 +935,9 @@ cmds(struct pt_regs *excp)
 		case '?':
 			xmon_puts(help_string);
 			break;
+		case '#':
+			set_lpp_cmd();
+			break;
 		case 'b':
 			bpt_cmds();
 			break;
@@ -1987,7 +2001,6 @@ memex(void)
 			case '^':
 				adrs -= size;
 				break;
-				break;
 			case '/':
 				if (nslash > 0)
 					adrs -= 1 << nslash;
@@ -2073,6 +2086,9 @@ static void xmon_rawdump (unsigned long adrs, long ndump)
 static void dump_one_paca(int cpu)
 {
 	struct paca_struct *p;
+#ifdef CONFIG_PPC_STD_MMU_64
+	int i = 0;
+#endif
 
 	if (setjmp(bus_error_jmp) != 0) {
 		printf("*** Error dumping paca for cpu 0x%x!\n", cpu);
@@ -2086,12 +2102,12 @@ static void dump_one_paca(int cpu)
 
 	printf("paca for cpu 0x%x @ %p:\n", cpu, p);
 
-	printf(" %-*s = %s\n", 16, "possible", cpu_possible(cpu) ? "yes" : "no");
-	printf(" %-*s = %s\n", 16, "present", cpu_present(cpu) ? "yes" : "no");
-	printf(" %-*s = %s\n", 16, "online", cpu_online(cpu) ? "yes" : "no");
+	printf(" %-*s = %s\n", 20, "possible", cpu_possible(cpu) ? "yes" : "no");
+	printf(" %-*s = %s\n", 20, "present", cpu_present(cpu) ? "yes" : "no");
+	printf(" %-*s = %s\n", 20, "online", cpu_online(cpu) ? "yes" : "no");
 
 #define DUMP(paca, name, format) \
-	printf(" %-*s = %#-*"format"\t(0x%lx)\n", 16, #name, 18, paca->name, \
+	printf(" %-*s = %#-*"format"\t(0x%lx)\n", 20, #name, 18, paca->name, \
 		offsetof(struct paca_struct, name));
 
 	DUMP(p, lock_token, "x");
@@ -2103,11 +2119,41 @@ static void dump_one_paca(int cpu)
 #ifdef CONFIG_PPC_BOOK3S_64
 	DUMP(p, mc_emergency_sp, "p");
 	DUMP(p, in_mce, "x");
+	DUMP(p, hmi_event_available, "x");
 #endif
 	DUMP(p, data_offset, "lx");
 	DUMP(p, hw_cpu_id, "x");
 	DUMP(p, cpu_start, "x");
 	DUMP(p, kexec_state, "x");
+#ifdef CONFIG_PPC_STD_MMU_64
+	for (i = 0; i < SLB_NUM_BOLTED; i++) {
+		u64 esid, vsid;
+
+		if (!p->slb_shadow_ptr)
+			continue;
+
+		esid = be64_to_cpu(p->slb_shadow_ptr->save_area[i].esid);
+		vsid = be64_to_cpu(p->slb_shadow_ptr->save_area[i].vsid);
+
+		if (esid || vsid) {
+			printf(" slb_shadow[%d]:       = 0x%016lx 0x%016lx\n",
+				i, esid, vsid);
+		}
+	}
+	DUMP(p, vmalloc_sllp, "x");
+	DUMP(p, slb_cache_ptr, "x");
+	for (i = 0; i < SLB_CACHE_ENTRIES; i++)
+		printf(" slb_cache[%d]:        = 0x%016lx\n", i, p->slb_cache[i]);
+#endif
+	DUMP(p, dscr_default, "llx");
+#ifdef CONFIG_PPC_BOOK3E
+	DUMP(p, pgd, "p");
+	DUMP(p, kernel_pgd, "p");
+	DUMP(p, tcd_ptr, "p");
+	DUMP(p, mc_kstack, "p");
+	DUMP(p, crit_kstack, "p");
+	DUMP(p, dbg_kstack, "p");
+#endif
 	DUMP(p, __current, "p");
 	DUMP(p, kstack, "lx");
 	DUMP(p, stab_rr, "lx");
@@ -2118,7 +2164,27 @@ static void dump_one_paca(int cpu)
 	DUMP(p, io_sync, "x");
 	DUMP(p, irq_work_pending, "x");
 	DUMP(p, nap_state_lost, "x");
+	DUMP(p, sprg_vdso, "llx");
+
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+	DUMP(p, tm_scratch, "llx");
+#endif
+
+#ifdef CONFIG_PPC_POWERNV
+	DUMP(p, core_idle_state_ptr, "p");
+	DUMP(p, thread_idle_state, "x");
+	DUMP(p, thread_mask, "x");
+	DUMP(p, subcore_sibling_mask, "x");
+#endif
 
+	DUMP(p, user_time, "llx");
+	DUMP(p, system_time, "llx");
+	DUMP(p, user_time_scaled, "llx");
+	DUMP(p, starttime, "llx");
+	DUMP(p, starttime_user, "llx");
+	DUMP(p, startspurr, "llx");
+	DUMP(p, utime_sspurr, "llx");
+	DUMP(p, stolen_time, "llx");
 #undef DUMP
 
 	catch_memory_errors = 0;
@@ -2167,7 +2233,9 @@ dump(void)
 
 #ifdef CONFIG_PPC64
 	if (c == 'p') {
+		xmon_start_pagination();
 		dump_pacas();
+		xmon_end_pagination();
 		return;
 	}
 #endif
@@ -2316,10 +2384,12 @@ dump_log_buf(void)
 	sync();
 
 	kmsg_dump_rewind_nolock(&dumper);
+	xmon_start_pagination();
 	while (kmsg_dump_get_line_nolock(&dumper, false, buf, sizeof(buf), &len)) {
 		buf[len] = '\0';
 		printf("%s", buf);
 	}
+	xmon_end_pagination();
 
 	sync();
 	/* wait a little while to see if we get a machine check */
@@ -2731,7 +2801,7 @@ static void xmon_print_symbol(unsigned long address, const char *mid,
 void dump_segments(void)
 {
 	int i;
-	unsigned long esid,vsid,valid;
+	unsigned long esid,vsid;
 	unsigned long llp;
 
 	printf("SLB contents of cpu 0x%x\n", smp_processor_id());
@@ -2739,10 +2809,9 @@ void dump_segments(void)
 	for (i = 0; i < mmu_slb_size; i++) {
 		asm volatile("slbmfee  %0,%1" : "=r" (esid) : "r" (i));
 		asm volatile("slbmfev  %0,%1" : "=r" (vsid) : "r" (i));
-		valid = (esid & SLB_ESID_V);
-		if (valid | esid | vsid) {
+		if (esid || vsid) {
 			printf("%02d %016lx %016lx", i, esid, vsid);
-			if (valid) {
+			if (esid & SLB_ESID_V) {
 				llp = vsid & SLB_VSID_LLP;
 				if (vsid & SLB_VSID_B_1T) {
 					printf("  1T  ESID=%9lx  VSID=%13lx LLP:%3lx \n",