Merge branch 'linus' into perf/core, to refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

11 files changed, 231 insertions, 9 deletions

diff --git a/tools/perf/arch/powerpc/include/perf_regs.h b/tools/perf/arch/powerpc/include/perf_regs.h
new file mode 100644
index 000000000000..75de0e92e71e
--- /dev/null
+++ b/tools/perf/arch/powerpc/include/perf_regs.h
@@ -0,0 +1,69 @@
+#ifndef ARCH_PERF_REGS_H
+#define ARCH_PERF_REGS_H
+
+#include <stdlib.h>
+#include <linux/types.h>
+#include <asm/perf_regs.h>
+
+#define PERF_REGS_MASK  ((1ULL << PERF_REG_POWERPC_MAX) - 1)
+#define PERF_REGS_MAX   PERF_REG_POWERPC_MAX
+#ifdef __powerpc64__
+	#define PERF_SAMPLE_REGS_ABI	PERF_SAMPLE_REGS_ABI_64
+#else
+	#define PERF_SAMPLE_REGS_ABI	PERF_SAMPLE_REGS_ABI_32
+#endif
+
+#define PERF_REG_IP     PERF_REG_POWERPC_NIP
+#define PERF_REG_SP     PERF_REG_POWERPC_R1
+
+static const char *reg_names[] = {
+	[PERF_REG_POWERPC_R0] = "r0",
+	[PERF_REG_POWERPC_R1] = "r1",
+	[PERF_REG_POWERPC_R2] = "r2",
+	[PERF_REG_POWERPC_R3] = "r3",
+	[PERF_REG_POWERPC_R4] = "r4",
+	[PERF_REG_POWERPC_R5] = "r5",
+	[PERF_REG_POWERPC_R6] = "r6",
+	[PERF_REG_POWERPC_R7] = "r7",
+	[PERF_REG_POWERPC_R8] = "r8",
+	[PERF_REG_POWERPC_R9] = "r9",
+	[PERF_REG_POWERPC_R10] = "r10",
+	[PERF_REG_POWERPC_R11] = "r11",
+	[PERF_REG_POWERPC_R12] = "r12",
+	[PERF_REG_POWERPC_R13] = "r13",
+	[PERF_REG_POWERPC_R14] = "r14",
+	[PERF_REG_POWERPC_R15] = "r15",
+	[PERF_REG_POWERPC_R16] = "r16",
+	[PERF_REG_POWERPC_R17] = "r17",
+	[PERF_REG_POWERPC_R18] = "r18",
+	[PERF_REG_POWERPC_R19] = "r19",
+	[PERF_REG_POWERPC_R20] = "r20",
+	[PERF_REG_POWERPC_R21] = "r21",
+	[PERF_REG_POWERPC_R22] = "r22",
+	[PERF_REG_POWERPC_R23] = "r23",
+	[PERF_REG_POWERPC_R24] = "r24",
+	[PERF_REG_POWERPC_R25] = "r25",
+	[PERF_REG_POWERPC_R26] = "r26",
+	[PERF_REG_POWERPC_R27] = "r27",
+	[PERF_REG_POWERPC_R28] = "r28",
+	[PERF_REG_POWERPC_R29] = "r29",
+	[PERF_REG_POWERPC_R30] = "r30",
+	[PERF_REG_POWERPC_R31] = "r31",
+	[PERF_REG_POWERPC_NIP] = "nip",
+	[PERF_REG_POWERPC_MSR] = "msr",
+	[PERF_REG_POWERPC_ORIG_R3] = "orig_r3",
+	[PERF_REG_POWERPC_CTR] = "ctr",
+	[PERF_REG_POWERPC_LINK] = "link",
+	[PERF_REG_POWERPC_XER] = "xer",
+	[PERF_REG_POWERPC_CCR] = "ccr",
+	[PERF_REG_POWERPC_SOFTE] = "softe",
+	[PERF_REG_POWERPC_TRAP] = "trap",
+	[PERF_REG_POWERPC_DAR] = "dar",
+	[PERF_REG_POWERPC_DSISR] = "dsisr"
+};
+
+static inline const char *perf_reg_name(int id)
+{
+	return reg_names[id];
+}
+#endif /* ARCH_PERF_REGS_H */
diff --git a/tools/perf/arch/powerpc/util/Build b/tools/perf/arch/powerpc/util/Build
index c8fe2074d217..90ad64b231cd 100644
--- a/tools/perf/arch/powerpc/util/Build
+++ b/tools/perf/arch/powerpc/util/Build
@@ -1,6 +1,8 @@
 libperf-y += header.o
 libperf-y += sym-handling.o
 libperf-y += kvm-stat.o
+libperf-y += perf_regs.o
 
 libperf-$(CONFIG_DWARF) += dwarf-regs.o
 libperf-$(CONFIG_DWARF) += skip-callchain-idx.o
+libperf-$(CONFIG_LIBUNWIND) += unwind-libunwind.o
diff --git a/tools/perf/arch/powerpc/util/perf_regs.c b/tools/perf/arch/powerpc/util/perf_regs.c
new file mode 100644
index 000000000000..a3c3e1ce6807
--- /dev/null
+++ b/tools/perf/arch/powerpc/util/perf_regs.c
@@ -0,0 +1,49 @@
+#include "../../perf.h"
+#include "../../util/perf_regs.h"
+
+const struct sample_reg sample_reg_masks[] = {
+	SMPL_REG(r0, PERF_REG_POWERPC_R0),
+	SMPL_REG(r1, PERF_REG_POWERPC_R1),
+	SMPL_REG(r2, PERF_REG_POWERPC_R2),
+	SMPL_REG(r3, PERF_REG_POWERPC_R3),
+	SMPL_REG(r4, PERF_REG_POWERPC_R4),
+	SMPL_REG(r5, PERF_REG_POWERPC_R5),
+	SMPL_REG(r6, PERF_REG_POWERPC_R6),
+	SMPL_REG(r7, PERF_REG_POWERPC_R7),
+	SMPL_REG(r8, PERF_REG_POWERPC_R8),
+	SMPL_REG(r9, PERF_REG_POWERPC_R9),
+	SMPL_REG(r10, PERF_REG_POWERPC_R10),
+	SMPL_REG(r11, PERF_REG_POWERPC_R11),
+	SMPL_REG(r12, PERF_REG_POWERPC_R12),
+	SMPL_REG(r13, PERF_REG_POWERPC_R13),
+	SMPL_REG(r14, PERF_REG_POWERPC_R14),
+	SMPL_REG(r15, PERF_REG_POWERPC_R15),
+	SMPL_REG(r16, PERF_REG_POWERPC_R16),
+	SMPL_REG(r17, PERF_REG_POWERPC_R17),
+	SMPL_REG(r18, PERF_REG_POWERPC_R18),
+	SMPL_REG(r19, PERF_REG_POWERPC_R19),
+	SMPL_REG(r20, PERF_REG_POWERPC_R20),
+	SMPL_REG(r21, PERF_REG_POWERPC_R21),
+	SMPL_REG(r22, PERF_REG_POWERPC_R22),
+	SMPL_REG(r23, PERF_REG_POWERPC_R23),
+	SMPL_REG(r24, PERF_REG_POWERPC_R24),
+	SMPL_REG(r25, PERF_REG_POWERPC_R25),
+	SMPL_REG(r26, PERF_REG_POWERPC_R26),
+	SMPL_REG(r27, PERF_REG_POWERPC_R27),
+	SMPL_REG(r28, PERF_REG_POWERPC_R28),
+	SMPL_REG(r29, PERF_REG_POWERPC_R29),
+	SMPL_REG(r30, PERF_REG_POWERPC_R30),
+	SMPL_REG(r31, PERF_REG_POWERPC_R31),
+	SMPL_REG(nip, PERF_REG_POWERPC_NIP),
+	SMPL_REG(msr, PERF_REG_POWERPC_MSR),
+	SMPL_REG(orig_r3, PERF_REG_POWERPC_ORIG_R3),
+	SMPL_REG(ctr, PERF_REG_POWERPC_CTR),
+	SMPL_REG(link, PERF_REG_POWERPC_LINK),
+	SMPL_REG(xer, PERF_REG_POWERPC_XER),
+	SMPL_REG(ccr, PERF_REG_POWERPC_CCR),
+	SMPL_REG(softe, PERF_REG_POWERPC_SOFTE),
+	SMPL_REG(trap, PERF_REG_POWERPC_TRAP),
+	SMPL_REG(dar, PERF_REG_POWERPC_DAR),
+	SMPL_REG(dsisr, PERF_REG_POWERPC_DSISR),
+	SMPL_REG_END
+};
diff --git a/tools/perf/arch/powerpc/util/unwind-libunwind.c b/tools/perf/arch/powerpc/util/unwind-libunwind.c
new file mode 100644
index 000000000000..9e15f92ae49f
--- /dev/null
+++ b/tools/perf/arch/powerpc/util/unwind-libunwind.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2016 Chandan Kumar, 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 <errno.h>
+#include <libunwind.h>
+#include <asm/perf_regs.h>
+#include "../../util/unwind.h"
+#include "../../util/debug.h"
+
+int libunwind__arch_reg_id(int regnum)
+{
+	switch (regnum) {
+	case UNW_PPC64_R0:
+		return PERF_REG_POWERPC_R0;
+	case UNW_PPC64_R1:
+		return PERF_REG_POWERPC_R1;
+	case UNW_PPC64_R2:
+		return PERF_REG_POWERPC_R2;
+	case UNW_PPC64_R3:
+		return PERF_REG_POWERPC_R3;
+	case UNW_PPC64_R4:
+		return PERF_REG_POWERPC_R4;
+	case UNW_PPC64_R5:
+		return PERF_REG_POWERPC_R5;
+	case UNW_PPC64_R6:
+		return PERF_REG_POWERPC_R6;
+	case UNW_PPC64_R7:
+		return PERF_REG_POWERPC_R7;
+	case UNW_PPC64_R8:
+		return PERF_REG_POWERPC_R8;
+	case UNW_PPC64_R9:
+		return PERF_REG_POWERPC_R9;
+	case UNW_PPC64_R10:
+		return PERF_REG_POWERPC_R10;
+	case UNW_PPC64_R11:
+		return PERF_REG_POWERPC_R11;
+	case UNW_PPC64_R12:
+		return PERF_REG_POWERPC_R12;
+	case UNW_PPC64_R13:
+		return PERF_REG_POWERPC_R13;
+	case UNW_PPC64_R14:
+		return PERF_REG_POWERPC_R14;
+	case UNW_PPC64_R15:
+		return PERF_REG_POWERPC_R15;
+	case UNW_PPC64_R16:
+		return PERF_REG_POWERPC_R16;
+	case UNW_PPC64_R17:
+		return PERF_REG_POWERPC_R17;
+	case UNW_PPC64_R18:
+		return PERF_REG_POWERPC_R18;
+	case UNW_PPC64_R19:
+		return PERF_REG_POWERPC_R19;
+	case UNW_PPC64_R20:
+		return PERF_REG_POWERPC_R20;
+	case UNW_PPC64_R21:
+		return PERF_REG_POWERPC_R21;
+	case UNW_PPC64_R22:
+		return PERF_REG_POWERPC_R22;
+	case UNW_PPC64_R23:
+		return PERF_REG_POWERPC_R23;
+	case UNW_PPC64_R24:
+		return PERF_REG_POWERPC_R24;
+	case UNW_PPC64_R25:
+		return PERF_REG_POWERPC_R25;
+	case UNW_PPC64_R26:
+		return PERF_REG_POWERPC_R26;
+	case UNW_PPC64_R27:
+		return PERF_REG_POWERPC_R27;
+	case UNW_PPC64_R28:
+		return PERF_REG_POWERPC_R28;
+	case UNW_PPC64_R29:
+		return PERF_REG_POWERPC_R29;
+	case UNW_PPC64_R30:
+		return PERF_REG_POWERPC_R30;
+	case UNW_PPC64_R31:
+		return PERF_REG_POWERPC_R31;
+	case UNW_PPC64_LR:
+		return PERF_REG_POWERPC_LINK;
+	case UNW_PPC64_CTR:
+		return PERF_REG_POWERPC_CTR;
+	case UNW_PPC64_XER:
+		return PERF_REG_POWERPC_XER;
+	case UNW_PPC64_NIP:
+		return PERF_REG_POWERPC_NIP;
+	default:
+		pr_err("unwind: invalid reg id %d\n", regnum);
+		return -EINVAL;
+	}
+	return -EINVAL;
+}
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 1e46277286c2..5ad0255f8756 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -23,6 +23,12 @@ $(call detected_var,ARCH)
 
 NO_PERF_REGS := 1
 
+# Additional ARCH settings for ppc
+ifeq ($(ARCH),powerpc)
+  NO_PERF_REGS := 0
+  LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
+endif
+
 # Additional ARCH settings for x86
 ifeq ($(ARCH),x86)
   $(call detected,CONFIG_X86)
diff --git a/tools/perf/tests/openat-syscall-all-cpus.c b/tools/perf/tests/openat-syscall-all-cpus.c
index 53c2273e8859..ad1cb63139a7 100644
--- a/tools/perf/tests/openat-syscall-all-cpus.c
+++ b/tools/perf/tests/openat-syscall-all-cpus.c
@@ -73,7 +73,7 @@ int test__openat_syscall_event_on_all_cpus(int subtest __maybe_unused)
 	}
 
 	/*
-	 * Here we need to explicitely preallocate the counts, as if
+	 * Here we need to explicitly preallocate the counts, as if
 	 * we use the auto allocation it will allocate just for 1 cpu,
 	 * as we start by cpu 0.
 	 */
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 8d30cbda51b6..18e18f1d435e 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -839,7 +839,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
 		perf_evsel__set_sample_bit(evsel, PERIOD);
 
 	/*
-	 * When the user explicitely disabled time don't force it here.
+	 * When the user explicitly disabled time don't force it here.
 	 */
 	if (opts->sample_time &&
 	    (!perf_missing_features.sample_id_all &&
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 205d27017361..b1772180c820 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -363,7 +363,7 @@ out_err:
 }
 
 /*
- * Caller must eventually drop thread->refcnt returned with a successfull
+ * Caller must eventually drop thread->refcnt returned with a successful
  * lookup/new thread inserted.
  */
 static struct thread *____machine__findnew_thread(struct machine *machine,
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 89d40bb425e1..d15e335842b7 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1657,7 +1657,7 @@ static void parse_events_print_error(struct parse_events_error *err,
 
 		buf = _buf;
 
-		/* We're cutting from the beggining. */
+		/* We're cutting from the beginning. */
 		if (err->idx > max_err_idx)
 			cut = err->idx - max_err_idx;
 
diff --git a/tools/perf/util/perf_regs.c b/tools/perf/util/perf_regs.c
index 6b8eb13e14e4..c4023f22f287 100644
--- a/tools/perf/util/perf_regs.c
+++ b/tools/perf/util/perf_regs.c
@@ -12,18 +12,18 @@ int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
 	int i, idx = 0;
 	u64 mask = regs->mask;
 
-	if (regs->cache_mask & (1 << id))
+	if (regs->cache_mask & (1ULL << id))
 		goto out;
 
-	if (!(mask & (1 << id)))
+	if (!(mask & (1ULL << id)))
 		return -EINVAL;
 
 	for (i = 0; i < id; i++) {
-		if (mask & (1 << i))
+		if (mask & (1ULL << i))
 			idx++;
 	}
 
-	regs->cache_mask |= (1 << id);
+	regs->cache_mask |= (1ULL << id);
 	regs->cache_regs[id] = regs->regs[idx];
 
 out:
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 43d30ea87b7e..dfedf097b9b1 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -557,7 +557,7 @@ static u8 revbyte(u8 b)
 
 /*
  * XXX this is hack in attempt to carry flags bitfield
- * throught endian village. ABI says:
+ * through endian village. ABI says:
  *
  * Bit-fields are allocated from right to left (least to most significant)
  * on little-endian implementations and from left to right (most to least