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perf tools: Add core support for sampling intr machine state regs

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Add the infrastructure to setup, collect and report the interrupt
machine state regs which can be captured by the kernel.

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: cebbert.lkml@gmail.com
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Waiman Long <Waiman.Long@hp.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1411559322-16548-4-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Stephane Eranian 2014-09-24 13:48:39 +02:00 • committed by Ingo Molnar
parent aea48559ac
commit 6a21c0b5c2
5 changed files with 87 additions and 6 deletions
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44
tools/perf/util/session.c
View file

@ -592,15 +592,46 @@ static void regs_dump__printf(u64 mask, u64 *regs)
}
}
static const char *regs_abi[] = {
[PERF_SAMPLE_REGS_ABI_NONE] = "none",
[PERF_SAMPLE_REGS_ABI_32] = "32-bit",
[PERF_SAMPLE_REGS_ABI_64] = "64-bit",
};
static inline const char *regs_dump_abi(struct regs_dump *d)
{
if (d->abi > PERF_SAMPLE_REGS_ABI_64)
return "unknown";
return regs_abi[d->abi];
}
static void regs__printf(const char *type, struct regs_dump *regs)
{
u64 mask = regs->mask;
printf("... %s regs: mask 0x%" PRIx64 " ABI %s\n",
type,
mask,
regs_dump_abi(regs));
regs_dump__printf(mask, regs->regs);
}
static void regs_user__printf(struct perf_sample *sample)
{
struct regs_dump *user_regs = &sample->user_regs;
if (user_regs->regs) {
u64 mask = user_regs->mask;
printf("... user regs: mask 0x%" PRIx64 "\n", mask);
regs_dump__printf(mask, user_regs->regs);
}
if (user_regs->regs)
regs__printf("user", user_regs);
}
static void regs_intr__printf(struct perf_sample *sample)
{
struct regs_dump *intr_regs = &sample->intr_regs;
if (intr_regs->regs)
regs__printf("intr", intr_regs);
}
static void stack_user__printf(struct stack_dump *dump)
@ -699,6 +730,9 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
if (sample_type & PERF_SAMPLE_REGS_USER)
regs_user__printf(sample);
if (sample_type & PERF_SAMPLE_REGS_INTR)
regs_intr__printf(sample);
if (sample_type & PERF_SAMPLE_STACK_USER)
stack_user__printf(&sample->user_stack);