Linux-libre 4.7.1-gnupck-4.7.1-gnu

5 files changed, 177 insertions, 32 deletions

diff --git a/arch/powerpc/perf/Makefile b/arch/powerpc/perf/Makefile
index f9c083a56..77b6394a7 100644
--- a/arch/powerpc/perf/Makefile
+++ b/arch/powerpc/perf/Makefile
@@ -1,6 +1,6 @@
 subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
 
-obj-$(CONFIG_PERF_EVENTS)	+= callchain.o
+obj-$(CONFIG_PERF_EVENTS)	+= callchain.o perf_regs.o
 
 obj-$(CONFIG_PPC_PERF_CTRS)	+= core-book3s.o bhrb.o
 obj64-$(CONFIG_PPC_PERF_CTRS)	+= power4-pmu.o ppc970-pmu.o power5-pmu.o \
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c
index e04a6752b..0fc267147 100644
--- a/arch/powerpc/perf/callchain.c
+++ b/arch/powerpc/perf/callchain.c
@@ -47,7 +47,7 @@ static int valid_next_sp(unsigned long sp, unsigned long prev_sp)
 }
 
 void
-perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
+perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
 {
 	unsigned long sp, next_sp;
 	unsigned long next_ip;
@@ -76,7 +76,7 @@ perf_callchain_kernel(struct perf_callchain_entry *entry, struct pt_regs *regs)
 			next_ip = regs->nip;
 			lr = regs->link;
 			level = 0;
-			perf_callchain_store(entry, PERF_CONTEXT_KERNEL);
+			perf_callchain_store_context(entry, PERF_CONTEXT_KERNEL);
 
 		} else {
 			if (level == 0)
@@ -137,7 +137,7 @@ static int read_user_stack_slow(void __user *ptr, void *buf, int nb)
 	offset = addr & ((1UL << shift) - 1);
 
 	pte = READ_ONCE(*ptep);
-	if (!pte_present(pte) || !(pte_val(pte) & _PAGE_USER))
+	if (!pte_present(pte) || !pte_user(pte))
 		goto err_out;
 	pfn = pte_pfn(pte);
 	if (!page_is_ram(pfn))
@@ -232,7 +232,7 @@ static int sane_signal_64_frame(unsigned long sp)
 		puc == (unsigned long) &sf->uc;
 }
 
-static void perf_callchain_user_64(struct perf_callchain_entry *entry,
+static void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry,
 				   struct pt_regs *regs)
 {
 	unsigned long sp, next_sp;
@@ -247,7 +247,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
 	sp = regs->gpr[1];
 	perf_callchain_store(entry, next_ip);
 
-	while (entry->nr < PERF_MAX_STACK_DEPTH) {
+	while (entry->nr < entry->max_stack) {
 		fp = (unsigned long __user *) sp;
 		if (!valid_user_sp(sp, 1) || read_user_stack_64(fp, &next_sp))
 			return;
@@ -274,7 +274,7 @@ static void perf_callchain_user_64(struct perf_callchain_entry *entry,
 			    read_user_stack_64(&uregs[PT_R1], &sp))
 				return;
 			level = 0;
-			perf_callchain_store(entry, PERF_CONTEXT_USER);
+			perf_callchain_store_context(entry, PERF_CONTEXT_USER);
 			perf_callchain_store(entry, next_ip);
 			continue;
 		}
@@ -319,7 +319,7 @@ static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
 	return rc;
 }
 
-static inline void perf_callchain_user_64(struct perf_callchain_entry *entry,
+static inline void perf_callchain_user_64(struct perf_callchain_entry_ctx *entry,
 					  struct pt_regs *regs)
 {
 }
@@ -439,7 +439,7 @@ static unsigned int __user *signal_frame_32_regs(unsigned int sp,
 	return mctx->mc_gregs;
 }
 
-static void perf_callchain_user_32(struct perf_callchain_entry *entry,
+static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry,
 				   struct pt_regs *regs)
 {
 	unsigned int sp, next_sp;
@@ -453,7 +453,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
 	sp = regs->gpr[1];
 	perf_callchain_store(entry, next_ip);
 
-	while (entry->nr < PERF_MAX_STACK_DEPTH) {
+	while (entry->nr < entry->max_stack) {
 		fp = (unsigned int __user *) (unsigned long) sp;
 		if (!valid_user_sp(sp, 0) || read_user_stack_32(fp, &next_sp))
 			return;
@@ -473,7 +473,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
 			    read_user_stack_32(&uregs[PT_R1], &sp))
 				return;
 			level = 0;
-			perf_callchain_store(entry, PERF_CONTEXT_USER);
+			perf_callchain_store_context(entry, PERF_CONTEXT_USER);
 			perf_callchain_store(entry, next_ip);
 			continue;
 		}
@@ -487,7 +487,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
 }
 
 void
-perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
+perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
 {
 	if (current_is_64bit())
 		perf_callchain_user_64(entry, regs);
diff --git a/arch/powerpc/perf/perf_regs.c b/arch/powerpc/perf/perf_regs.c
new file mode 100644
index 000000000..d24a8a366
--- /dev/null
+++ b/arch/powerpc/perf/perf_regs.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2016 Anju T, IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/perf_event.h>
+#include <linux/bug.h>
+#include <linux/stddef.h>
+#include <asm/ptrace.h>
+#include <asm/perf_regs.h>
+
+#define PT_REGS_OFFSET(id, r) [id] = offsetof(struct pt_regs, r)
+
+#define REG_RESERVED (~((1ULL << PERF_REG_POWERPC_MAX) - 1))
+
+static unsigned int pt_regs_offset[PERF_REG_POWERPC_MAX] = {
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R0,  gpr[0]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R1,  gpr[1]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R2,  gpr[2]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R3,  gpr[3]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R4,  gpr[4]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R5,  gpr[5]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R6,  gpr[6]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R7,  gpr[7]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R8,  gpr[8]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R9,  gpr[9]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R10, gpr[10]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R11, gpr[11]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R12, gpr[12]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R13, gpr[13]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R14, gpr[14]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R15, gpr[15]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R16, gpr[16]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R17, gpr[17]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R18, gpr[18]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R19, gpr[19]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R20, gpr[20]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R21, gpr[21]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R22, gpr[22]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R23, gpr[23]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R24, gpr[24]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R25, gpr[25]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R26, gpr[26]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R27, gpr[27]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R28, gpr[28]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R29, gpr[29]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R30, gpr[30]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_R31, gpr[31]),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_NIP, nip),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_MSR, msr),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_ORIG_R3, orig_gpr3),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_CTR, ctr),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_LINK, link),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_XER, xer),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_CCR, ccr),
+#ifdef CONFIG_PPC64
+	PT_REGS_OFFSET(PERF_REG_POWERPC_SOFTE, softe),
+#else
+	PT_REGS_OFFSET(PERF_REG_POWERPC_SOFTE, mq),
+#endif
+	PT_REGS_OFFSET(PERF_REG_POWERPC_TRAP, trap),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_DAR, dar),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_DSISR, dsisr),
+};
+
+u64 perf_reg_value(struct pt_regs *regs, int idx)
+{
+	if (WARN_ON_ONCE(idx >= PERF_REG_POWERPC_MAX))
+		return 0;
+
+	return regs_get_register(regs, pt_regs_offset[idx]);
+}
+
+int perf_reg_validate(u64 mask)
+{
+	if (!mask || mask & REG_RESERVED)
+		return -EINVAL;
+	return 0;
+}
+
+u64 perf_reg_abi(struct task_struct *task)
+{
+#ifdef CONFIG_PPC64
+	if (!test_tsk_thread_flag(task, TIF_32BIT))
+		return PERF_SAMPLE_REGS_ABI_64;
+	else
+#endif
+	return PERF_SAMPLE_REGS_ABI_32;
+}
+
+void perf_get_regs_user(struct perf_regs *regs_user,
+			struct pt_regs *regs,
+			struct pt_regs *regs_user_copy)
+{
+	regs_user->regs = task_pt_regs(current);
+	regs_user->abi  = perf_reg_abi(current);
+}
diff --git a/arch/powerpc/perf/power8-events-list.h b/arch/powerpc/perf/power8-events-list.h
index 741b77edd..3a2e6e8eb 100644
--- a/arch/powerpc/perf/power8-events-list.h
+++ b/arch/powerpc/perf/power8-events-list.h
@@ -49,3 +49,43 @@ EVENT(PM_L3_PREF_ALL,				0x4e052)
 EVENT(PM_DTLB_MISS,				0x300fc)
 /* ITLB Reloaded */
 EVENT(PM_ITLB_MISS,				0x400fc)
+/* Run_Instructions */
+EVENT(PM_RUN_INST_CMPL,				0x500fa)
+/* Alternate event code for PM_RUN_INST_CMPL */
+EVENT(PM_RUN_INST_CMPL_ALT,			0x400fa)
+/* Run_cycles */
+EVENT(PM_RUN_CYC,				0x600f4)
+/* Alternate event code for Run_cycles */
+EVENT(PM_RUN_CYC_ALT,				0x200f4)
+/* Marked store completed */
+EVENT(PM_MRK_ST_CMPL,				0x10134)
+/* Alternate event code for Marked store completed */
+EVENT(PM_MRK_ST_CMPL_ALT,			0x301e2)
+/* Marked two path branch */
+EVENT(PM_BR_MRK_2PATH,				0x10138)
+/* Alternate event code for PM_BR_MRK_2PATH */
+EVENT(PM_BR_MRK_2PATH_ALT,			0x40138)
+/* L3 castouts in Mepf state */
+EVENT(PM_L3_CO_MEPF,				0x18082)
+/* Alternate event code for PM_L3_CO_MEPF */
+EVENT(PM_L3_CO_MEPF_ALT,			0x3e05e)
+/* Data cache was reloaded from a location other than L2 due to a marked load */
+EVENT(PM_MRK_DATA_FROM_L2MISS,			0x1d14e)
+/* Alternate event code for PM_MRK_DATA_FROM_L2MISS */
+EVENT(PM_MRK_DATA_FROM_L2MISS_ALT,		0x401e8)
+/* Alternate event code for  PM_CMPLU_STALL */
+EVENT(PM_CMPLU_STALL_ALT,			0x1e054)
+/* Two path branch */
+EVENT(PM_BR_2PATH,				0x20036)
+/* Alternate event code for PM_BR_2PATH */
+EVENT(PM_BR_2PATH_ALT,				0x40036)
+/* # PPC Dispatched */
+EVENT(PM_INST_DISP,				0x200f2)
+/* Alternate event code for PM_INST_DISP */
+EVENT(PM_INST_DISP_ALT,				0x300f2)
+/* Marked filter Match */
+EVENT(PM_MRK_FILT_MATCH,			0x2013c)
+/* Alternate event code for PM_MRK_FILT_MATCH */
+EVENT(PM_MRK_FILT_MATCH_ALT,			0x3012e)
+/* Alternate event code for PM_LD_MISS_L1 */
+EVENT(PM_LD_MISS_L1_ALT,			0x400f0)
diff --git a/arch/powerpc/perf/power8-pmu.c b/arch/powerpc/perf/power8-pmu.c
index 690d9186a..7cf3b4378 100644
--- a/arch/powerpc/perf/power8-pmu.c
+++ b/arch/powerpc/perf/power8-pmu.c
@@ -274,7 +274,8 @@ static int power8_get_constraint(u64 event, unsigned long *maskp, unsigned long
 		/* Ignore Linux defined bits when checking event below */
 		base_event = event & ~EVENT_LINUX_MASK;
 
-		if (pmc >= 5 && base_event != 0x500fa && base_event != 0x600f4)
+		if (pmc >= 5 && base_event != PM_RUN_INST_CMPL &&
+				base_event != PM_RUN_CYC)
 			return -1;
 
 		mask  |= CNST_PMC_MASK(pmc);
@@ -488,17 +489,17 @@ static int power8_compute_mmcr(u64 event[], int n_ev,
 
 /* Table of alternatives, sorted by column 0 */
 static const unsigned int event_alternatives[][MAX_ALT] = {
-	{ 0x10134, 0x301e2 },		/* PM_MRK_ST_CMPL */
-	{ 0x10138, 0x40138 },		/* PM_BR_MRK_2PATH */
-	{ 0x18082, 0x3e05e },		/* PM_L3_CO_MEPF */
-	{ 0x1d14e, 0x401e8 },		/* PM_MRK_DATA_FROM_L2MISS */
-	{ 0x1e054, 0x4000a },		/* PM_CMPLU_STALL */
-	{ 0x20036, 0x40036 },		/* PM_BR_2PATH */
-	{ 0x200f2, 0x300f2 },		/* PM_INST_DISP */
-	{ 0x200f4, 0x600f4 },		/* PM_RUN_CYC */
-	{ 0x2013c, 0x3012e },		/* PM_MRK_FILT_MATCH */
-	{ 0x3e054, 0x400f0 },		/* PM_LD_MISS_L1 */
-	{ 0x400fa, 0x500fa },		/* PM_RUN_INST_CMPL */
+	{ PM_MRK_ST_CMPL,		PM_MRK_ST_CMPL_ALT },
+	{ PM_BR_MRK_2PATH,		PM_BR_MRK_2PATH_ALT },
+	{ PM_L3_CO_MEPF,		PM_L3_CO_MEPF_ALT },
+	{ PM_MRK_DATA_FROM_L2MISS,	PM_MRK_DATA_FROM_L2MISS_ALT },
+	{ PM_CMPLU_STALL_ALT,		PM_CMPLU_STALL },
+	{ PM_BR_2PATH,			PM_BR_2PATH_ALT },
+	{ PM_INST_DISP,			PM_INST_DISP_ALT },
+	{ PM_RUN_CYC_ALT,		PM_RUN_CYC },
+	{ PM_MRK_FILT_MATCH,		PM_MRK_FILT_MATCH_ALT },
+	{ PM_LD_MISS_L1,		PM_LD_MISS_L1_ALT },
+	{ PM_RUN_INST_CMPL_ALT,		PM_RUN_INST_CMPL },
 };
 
 /*
@@ -546,17 +547,17 @@ static int power8_get_alternatives(u64 event, unsigned int flags, u64 alt[])
 		j = num_alt;
 		for (i = 0; i < num_alt; ++i) {
 			switch (alt[i]) {
-			case 0x1e:	/* PM_CYC */
-				alt[j++] = 0x600f4;	/* PM_RUN_CYC */
+			case PM_CYC:
+				alt[j++] = PM_RUN_CYC;
 				break;
-			case 0x600f4:	/* PM_RUN_CYC */
-				alt[j++] = 0x1e;
+			case PM_RUN_CYC:
+				alt[j++] = PM_CYC;
 				break;
-			case 0x2:	/* PM_PPC_CMPL */
-				alt[j++] = 0x500fa;	/* PM_RUN_INST_CMPL */
+			case PM_INST_CMPL:
+				alt[j++] = PM_RUN_INST_CMPL;
 				break;
-			case 0x500fa:	/* PM_RUN_INST_CMPL */
-				alt[j++] = 0x2;	/* PM_PPC_CMPL */
+			case PM_RUN_INST_CMPL:
+				alt[j++] = PM_INST_CMPL;
 				break;
 			}
 		}