Merge tag 'perf-core-for-mingo-20161024' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

New features:

- Dynamicly change verbosity level by pressing 'V' in the 'perf top/report'
  hists TUI browser (Alexis Berlemont)

- Implement 'perf trace --delay' in the same fashion as in 'perf record --delay',
  to skip sampling workload initialization events (Alexis Berlemont)

- Make vendor named events case insensitive in 'perf list', i.e.
  'perf list LONGEST_LAT' works just the same as  'perf list longest_lat' (Andi Kleen)

- Show instruction bytes and lenght in 'perf script' for Intel PT and BTS (Andi Kleen, Adrian Hunter)

   E.g:

    % perf record -e intel_pt// foo
    % perf script --itrace=i0ns -F ip,insn,insnlen
     ffffffff8101232f ilen: 5 insn: 0f 1f 44 00 00
     ffffffff81012334 ilen: 1 insn: 5b
     ffffffff81012335 ilen: 1 insn: 5d
     ffffffff81012336 ilen: 1 insn: c3
     ffffffff810123e3 ilen: 1 insn: 5b
     ffffffff810123e4 ilen: 2 insn: 41 5c
     ffffffff810123e6 ilen: 1 insn: 5d
     ffffffff810123e7 ilen: 1 insn: c3
     ffffffff810124a6 ilen: 2 insn: 31 c0
     ffffffff810124a8 ilen: 9 insn: 41 83 bc 24 a8 01 00 00 01
     ffffffff810124b1 ilen: 2 insn: 75 87

- Allow enabling the perf_event_attr.branch_type attribute member: (Andi Kleen)

  perf record -e sched:sched_switch,cpu/cpu-cycles,branch_type=any/ ...

- Add unwinding support for jitdump (Stefano Sanfilippo)

Fixes:

- Use raw_syscall:sys_enter timestamp in 'perf trace' (Arnaldo Carvalho de Melo)

Infrastructure:

- Allow jitdump to be built without libdwarf (Maciej Debski)

- Sync x86's syscall table tools/ copy (Arnaldo Carvalho de Melo)

- Fixes to avoid calling die() in library fuctions already propagating other
  errors (Arnaldo Carvalho de Melo)

- Improvements to allow libtraceevent to be properly installed in distro
  packages (Jiri Olsa)

- Removing coresight miscellaneous debug output (Mathieu Poirier)

- Cache align the 'perf bench futex' worker struct (Sebastian Andrzej Siewior)

Documentation:

- Minor improvements on the documentation of event parameters (Andi Kleen)

- Add jitdump format specification document (Stephane Eranian)

Spelling fixes:

- Fix typo "No enough" to "Not enough" (Alexander Alemayhu)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2 files changed, 34 insertions, 48 deletions

diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c
index 8024cd5febd2..d9e5e80bb4d0 100644
--- a/tools/perf/bench/futex-hash.c
+++ b/tools/perf/bench/futex-hash.c
@@ -39,12 +39,15 @@ static unsigned int threads_starting;
 static struct stats throughput_stats;
 static pthread_cond_t thread_parent, thread_worker;
 
+#define SMP_CACHE_BYTES 256
+#define __cacheline_aligned __attribute__ ((aligned (SMP_CACHE_BYTES)))
+
 struct worker {
 	int tid;
 	u_int32_t *futex;
 	pthread_t thread;
 	unsigned long ops;
-};
+} __cacheline_aligned;
 
 static const struct option options[] = {
 	OPT_UINTEGER('t', "threads", &nthreads, "Specify amount of threads"),
diff --git a/tools/perf/bench/mem-functions.c b/tools/perf/bench/mem-functions.c
index c684910e5a48..52504a83b5a1 100644
--- a/tools/perf/bench/mem-functions.c
+++ b/tools/perf/bench/mem-functions.c
@@ -106,9 +106,10 @@ static double timeval2double(struct timeval *ts)
 
 struct bench_mem_info {
 	const struct function *functions;
-	u64 (*do_cycles)(const struct function *r, size_t size);
-	double (*do_gettimeofday)(const struct function *r, size_t size);
+	u64 (*do_cycles)(const struct function *r, size_t size, void *src, void *dst);
+	double (*do_gettimeofday)(const struct function *r, size_t size, void *src, void *dst);
 	const char *const *usage;
+	bool alloc_src;
 };
 
 static void __bench_mem_function(struct bench_mem_info *info, int r_idx, size_t size, double size_total)
@@ -116,16 +117,26 @@ static void __bench_mem_function(struct bench_mem_info *info, int r_idx, size_t
 	const struct function *r = &info->functions[r_idx];
 	double result_bps = 0.0;
 	u64 result_cycles = 0;
+	void *src = NULL, *dst = zalloc(size);
 
 	printf("# function '%s' (%s)\n", r->name, r->desc);
 
+	if (dst == NULL)
+		goto out_alloc_failed;
+
+	if (info->alloc_src) {
+		src = zalloc(size);
+		if (src == NULL)
+			goto out_alloc_failed;
+	}
+
 	if (bench_format == BENCH_FORMAT_DEFAULT)
 		printf("# Copying %s bytes ...\n\n", size_str);
 
 	if (use_cycles) {
-		result_cycles = info->do_cycles(r, size);
+		result_cycles = info->do_cycles(r, size, src, dst);
 	} else {
-		result_bps = info->do_gettimeofday(r, size);
+		result_bps = info->do_gettimeofday(r, size, src, dst);
 	}
 
 	switch (bench_format) {
@@ -149,6 +160,14 @@ static void __bench_mem_function(struct bench_mem_info *info, int r_idx, size_t
 		BUG_ON(1);
 		break;
 	}
+
+out_free:
+	free(src);
+	free(dst);
+	return;
+out_alloc_failed:
+	printf("# Memory allocation failed - maybe size (%s) is too large?\n", size_str);
+	goto out_free;
 }
 
 static int bench_mem_common(int argc, const char **argv, struct bench_mem_info *info)
@@ -201,28 +220,14 @@ static int bench_mem_common(int argc, const char **argv, struct bench_mem_info *
 	return 0;
 }
 
-static void memcpy_alloc_mem(void **dst, void **src, size_t size)
-{
-	*dst = zalloc(size);
-	if (!*dst)
-		die("memory allocation failed - maybe size is too large?\n");
-
-	*src = zalloc(size);
-	if (!*src)
-		die("memory allocation failed - maybe size is too large?\n");
-
-	/* Make sure to always prefault zero pages even if MMAP_THRESH is crossed: */
-	memset(*src, 0, size);
-}
-
-static u64 do_memcpy_cycles(const struct function *r, size_t size)
+static u64 do_memcpy_cycles(const struct function *r, size_t size, void *src, void *dst)
 {
 	u64 cycle_start = 0ULL, cycle_end = 0ULL;
-	void *src = NULL, *dst = NULL;
 	memcpy_t fn = r->fn.memcpy;
 	int i;
 
-	memcpy_alloc_mem(&dst, &src, size);
+	/* Make sure to always prefault zero pages even if MMAP_THRESH is crossed: */
+	memset(src, 0, size);
 
 	/*
 	 * We prefault the freshly allocated memory range here,
@@ -235,20 +240,15 @@ static u64 do_memcpy_cycles(const struct function *r, size_t size)
 		fn(dst, src, size);
 	cycle_end = get_cycles();
 
-	free(src);
-	free(dst);
 	return cycle_end - cycle_start;
 }
 
-static double do_memcpy_gettimeofday(const struct function *r, size_t size)
+static double do_memcpy_gettimeofday(const struct function *r, size_t size, void *src, void *dst)
 {
 	struct timeval tv_start, tv_end, tv_diff;
 	memcpy_t fn = r->fn.memcpy;
-	void *src = NULL, *dst = NULL;
 	int i;
 
-	memcpy_alloc_mem(&dst, &src, size);
-
 	/*
 	 * We prefault the freshly allocated memory range here,
 	 * to not measure page fault overhead:
@@ -262,9 +262,6 @@ static double do_memcpy_gettimeofday(const struct function *r, size_t size)
 
 	timersub(&tv_end, &tv_start, &tv_diff);
 
-	free(src);
-	free(dst);
-
 	return (double)(((double)size * nr_loops) / timeval2double(&tv_diff));
 }
 
@@ -294,27 +291,18 @@ int bench_mem_memcpy(int argc, const char **argv, const char *prefix __maybe_unu
 		.do_cycles		= do_memcpy_cycles,
 		.do_gettimeofday	= do_memcpy_gettimeofday,
 		.usage			= bench_mem_memcpy_usage,
+		.alloc_src              = true,
 	};
 
 	return bench_mem_common(argc, argv, &info);
 }
 
-static void memset_alloc_mem(void **dst, size_t size)
-{
-	*dst = zalloc(size);
-	if (!*dst)
-		die("memory allocation failed - maybe size is too large?\n");
-}
-
-static u64 do_memset_cycles(const struct function *r, size_t size)
+static u64 do_memset_cycles(const struct function *r, size_t size, void *src __maybe_unused, void *dst)
 {
 	u64 cycle_start = 0ULL, cycle_end = 0ULL;
 	memset_t fn = r->fn.memset;
-	void *dst = NULL;
 	int i;
 
-	memset_alloc_mem(&dst, size);
-
 	/*
 	 * We prefault the freshly allocated memory range here,
 	 * to not measure page fault overhead:
@@ -326,19 +314,15 @@ static u64 do_memset_cycles(const struct function *r, size_t size)
 		fn(dst, i, size);
 	cycle_end = get_cycles();
 
-	free(dst);
 	return cycle_end - cycle_start;
 }
 
-static double do_memset_gettimeofday(const struct function *r, size_t size)
+static double do_memset_gettimeofday(const struct function *r, size_t size, void *src __maybe_unused, void *dst)
 {
 	struct timeval tv_start, tv_end, tv_diff;
 	memset_t fn = r->fn.memset;
-	void *dst = NULL;
 	int i;
 
-	memset_alloc_mem(&dst, size);
-
 	/*
 	 * We prefault the freshly allocated memory range here,
 	 * to not measure page fault overhead:
@@ -352,7 +336,6 @@ static double do_memset_gettimeofday(const struct function *r, size_t size)
 
 	timersub(&tv_end, &tv_start, &tv_diff);
 
-	free(dst);
 	return (double)(((double)size * nr_loops) / timeval2double(&tv_diff));
 }