* [tip:perf/stat] perf tools: Add front-end and back-end stalled cycles support
@ 2011-04-29 12:46 tip-bot for Ingo Molnar
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From: tip-bot for Ingo Molnar @ 2011-04-29 12:46 UTC (permalink / raw)
To: linux-tip-commits
Cc: linux-kernel, acme, hpa, mingo, a.p.zijlstra, fweisbec, tglx,
mingo
Commit-ID: 129c04cb8ce2e4bf3f17223f58ef16aa8a2cb3b8
Gitweb: http://git.kernel.org/tip/129c04cb8ce2e4bf3f17223f58ef16aa8a2cb3b8
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Fri, 29 Apr 2011 14:41:28 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Fri, 29 Apr 2011 14:35:49 +0200
perf tools: Add front-end and back-end stalled cycles support
Update perf tooling to deal with front-end and back-end stalled cycles events.
Add both the default 'perf stat' output.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/n/tip-7y40wib8n002io7hjpn1dsrm@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
tools/perf/builtin-stat.c | 10 ++++++----
tools/perf/util/parse-events.c | 37 +++++++++++++++++++------------------
tools/perf/util/python.c | 4 +++-
3 files changed, 28 insertions(+), 23 deletions(-)
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index da77077..6a4a8a3 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -66,7 +66,8 @@ static struct perf_event_attr default_attrs[] = {
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES },
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
@@ -84,7 +85,8 @@ static struct perf_event_attr detailed_attrs[] = {
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES },
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
+ { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
@@ -249,7 +251,7 @@ static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
update_stats(&runtime_nsecs_stats[0], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
update_stats(&runtime_cycles_stats[0], count[0]);
- else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES))
+ else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
update_stats(&runtime_stalled_cycles_stats[0], count[0]);
else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
update_stats(&runtime_branches_stats[0], count[0]);
@@ -607,7 +609,7 @@ static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
fprintf(stderr, " # %8.3f %% of all cache refs ", ratio);
- } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES)) {
+ } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
print_stalled_cycles(cpu, evsel, avg);
} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
total = avg_stats(&runtime_nsecs_stats[cpu]);
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index bbbb735..04d2f0a 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -31,24 +31,25 @@ char debugfs_path[MAXPATHLEN];
#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
static struct event_symbol event_symbols[] = {
- { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
- { CHW(STALLED_CYCLES), "stalled-cycles", "idle-cycles" },
- { CHW(INSTRUCTIONS), "instructions", "" },
- { CHW(CACHE_REFERENCES), "cache-references", "" },
- { CHW(CACHE_MISSES), "cache-misses", "" },
- { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
- { CHW(BRANCH_MISSES), "branch-misses", "" },
- { CHW(BUS_CYCLES), "bus-cycles", "" },
-
- { CSW(CPU_CLOCK), "cpu-clock", "" },
- { CSW(TASK_CLOCK), "task-clock", "" },
- { CSW(PAGE_FAULTS), "page-faults", "faults" },
- { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
- { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
- { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
- { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
- { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
- { CSW(EMULATION_FAULTS), "emulation-faults", "" },
+ { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
+ { CHW(STALLED_CYCLES_FRONTEND), "stalled-cycles-frontend", "idle-cycles-frontend" },
+ { CHW(STALLED_CYCLES_BACKEND), "stalled-cycles-backend", "idle-cycles-backend" },
+ { CHW(INSTRUCTIONS), "instructions", "" },
+ { CHW(CACHE_REFERENCES), "cache-references", "" },
+ { CHW(CACHE_MISSES), "cache-misses", "" },
+ { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
+ { CHW(BRANCH_MISSES), "branch-misses", "" },
+ { CHW(BUS_CYCLES), "bus-cycles", "" },
+
+ { CSW(CPU_CLOCK), "cpu-clock", "" },
+ { CSW(TASK_CLOCK), "task-clock", "" },
+ { CSW(PAGE_FAULTS), "page-faults", "faults" },
+ { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
+ { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
+ { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
+ { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
+ { CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
+ { CSW(EMULATION_FAULTS), "emulation-faults", "" },
};
#define __PERF_EVENT_FIELD(config, name) \
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 406f613..8b0eff8 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -798,7 +798,6 @@ static struct {
{ "COUNT_HW_BRANCH_INSTRUCTIONS", PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
{ "COUNT_HW_BRANCH_MISSES", PERF_COUNT_HW_BRANCH_MISSES },
{ "COUNT_HW_BUS_CYCLES", PERF_COUNT_HW_BUS_CYCLES },
- { "COUNT_HW_STALLED_CYCLES", PERF_COUNT_HW_STALLED_CYCLES },
{ "COUNT_HW_CACHE_L1D", PERF_COUNT_HW_CACHE_L1D },
{ "COUNT_HW_CACHE_L1I", PERF_COUNT_HW_CACHE_L1I },
{ "COUNT_HW_CACHE_LL", PERF_COUNT_HW_CACHE_LL },
@@ -811,6 +810,9 @@ static struct {
{ "COUNT_HW_CACHE_RESULT_ACCESS", PERF_COUNT_HW_CACHE_RESULT_ACCESS },
{ "COUNT_HW_CACHE_RESULT_MISS", PERF_COUNT_HW_CACHE_RESULT_MISS },
+ { "COUNT_HW_STALLED_CYCLES_FRONTEND", PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
+ { "COUNT_HW_STALLED_CYCLES_BACKEND", PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
+
{ "COUNT_SW_CPU_CLOCK", PERF_COUNT_SW_CPU_CLOCK },
{ "COUNT_SW_TASK_CLOCK", PERF_COUNT_SW_TASK_CLOCK },
{ "COUNT_SW_PAGE_FAULTS", PERF_COUNT_SW_PAGE_FAULTS },
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2011-04-29 12:46 [tip:perf/stat] perf tools: Add front-end and back-end stalled cycles support tip-bot for Ingo Molnar
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