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Subject[tip:perf/core] perf script: Add support to display sample misc field
Commit-ID:  28a0b39877f5ed64ae9fadf95dddb90999309dee
Gitweb: https://git.kernel.org/tip/28a0b39877f5ed64ae9fadf95dddb90999309dee
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Sun, 7 Jan 2018 17:03:52 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 8 Jan 2018 12:39:50 -0300

perf script: Add support to display sample misc field

Adding support to display sample misc field in form
of letter for each bit:

# perf script -F +misc ...
sched-messaging 1414 K 28690.636582: 4590 cycles ...
sched-messaging 1407 U 28690.636600: 325620 cycles ...
sched-messaging 1414 K 28690.636608: 19473 cycles ...
misc field __________/

The misc bits are assigned to following letters:

PERF_RECORD_MISC_KERNEL K
PERF_RECORD_MISC_USER U
PERF_RECORD_MISC_HYPERVISOR H
PERF_RECORD_MISC_GUEST_KERNEL G
PERF_RECORD_MISC_GUEST_USER g
PERF_RECORD_MISC_MMAP_DATA* M
PERF_RECORD_MISC_COMM_EXEC E
PERF_RECORD_MISC_SWITCH_OUT S

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180107160356.28203-9-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-script.txt | 20 ++++++++-
tools/perf/builtin-script.c | 74 +++++++++++++++++++++++++++-----
tools/perf/util/event.h | 1 +
tools/perf/util/evsel.c | 1 +
4 files changed, 84 insertions(+), 12 deletions(-)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 7b622a8..93ae8d6 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -117,7 +117,7 @@ OPTIONS
Comma separated list of fields to print. Options are:
comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output, brstackinsn,
- brstackoff, callindent, insn, insnlen, synth, phys_addr, metric.
+ brstackoff, callindent, insn, insnlen, synth, phys_addr, metric, misc.
Field list can be prepended with the type, trace, sw or hw,
to indicate to which event type the field list applies.
e.g., -F sw:comm,tid,time,ip,sym and -F trace:time,cpu,trace
@@ -225,6 +225,24 @@ OPTIONS
that the metric computed is averaged over the whole sampling
period, not just for the sample point.

+ For sample events it's possible to display misc field with -F +misc option,
+ following letters are displayed for each bit:
+
+ PERF_RECORD_MISC_KERNEL K
+ PERF_RECORD_MISC_USER U
+ PERF_RECORD_MISC_HYPERVISOR H
+ PERF_RECORD_MISC_GUEST_KERNEL G
+ PERF_RECORD_MISC_GUEST_USER g
+ PERF_RECORD_MISC_MMAP_DATA* M
+ PERF_RECORD_MISC_COMM_EXEC E
+ PERF_RECORD_MISC_SWITCH_OUT S
+
+ $ perf script -F +misc ...
+ sched-messaging 1414 K 28690.636582: 4590 cycles ...
+ sched-messaging 1407 U 28690.636600: 325620 cycles ...
+ sched-messaging 1414 K 28690.636608: 19473 cycles ...
+ misc field ___________/
+
-k::
--vmlinux=<file>::
vmlinux pathname
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 330dcd9..bb60349 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -93,6 +93,7 @@ enum perf_output_field {
PERF_OUTPUT_PHYS_ADDR = 1U << 26,
PERF_OUTPUT_UREGS = 1U << 27,
PERF_OUTPUT_METRIC = 1U << 28,
+ PERF_OUTPUT_MISC = 1U << 29,
};

struct output_option {
@@ -128,6 +129,7 @@ struct output_option {
{.str = "synth", .field = PERF_OUTPUT_SYNTH},
{.str = "phys_addr", .field = PERF_OUTPUT_PHYS_ADDR},
{.str = "metric", .field = PERF_OUTPUT_METRIC},
+ {.str = "misc", .field = PERF_OUTPUT_MISC},
};

enum {
@@ -594,7 +596,8 @@ static int perf_sample__fprintf_uregs(struct perf_sample *sample,

static int perf_sample__fprintf_start(struct perf_sample *sample,
struct thread *thread,
- struct perf_evsel *evsel, FILE *fp)
+ struct perf_evsel *evsel,
+ u32 type, FILE *fp)
{
struct perf_event_attr *attr = &evsel->attr;
unsigned long secs;
@@ -624,6 +627,47 @@ static int perf_sample__fprintf_start(struct perf_sample *sample,
printed += fprintf(fp, "[%03d] ", sample->cpu);
}

+ if (PRINT_FIELD(MISC)) {
+ int ret = 0;
+
+ #define has(m) \
+ (sample->misc & PERF_RECORD_MISC_##m) == PERF_RECORD_MISC_##m
+
+ if (has(KERNEL))
+ ret += fprintf(fp, "K");
+ if (has(USER))
+ ret += fprintf(fp, "U");
+ if (has(HYPERVISOR))
+ ret += fprintf(fp, "H");
+ if (has(GUEST_KERNEL))
+ ret += fprintf(fp, "G");
+ if (has(GUEST_USER))
+ ret += fprintf(fp, "g");
+
+ switch (type) {
+ case PERF_RECORD_MMAP:
+ case PERF_RECORD_MMAP2:
+ if (has(MMAP_DATA))
+ ret += fprintf(fp, "M");
+ break;
+ case PERF_RECORD_COMM:
+ if (has(COMM_EXEC))
+ ret += fprintf(fp, "E");
+ break;
+ case PERF_RECORD_SWITCH:
+ case PERF_RECORD_SWITCH_CPU_WIDE:
+ if (has(SWITCH_OUT))
+ ret += fprintf(fp, "S");
+ default:
+ break;
+ }
+
+ #undef has
+
+ ret += fprintf(fp, "%*s", 6 - ret, " ");
+ printed += ret;
+ }
+
if (PRINT_FIELD(TIME)) {
nsecs = sample->time;
secs = nsecs / NSEC_PER_SEC;
@@ -1502,7 +1546,7 @@ static void script_print_metric(void *ctx, const char *color,
if (!fmt)
return;
perf_sample__fprintf_start(mctx->sample, mctx->thread, mctx->evsel,
- mctx->fp);
+ PERF_RECORD_SAMPLE, mctx->fp);
fputs("\tmetric: ", mctx->fp);
if (color)
color_fprintf(mctx->fp, color, fmt, val);
@@ -1516,7 +1560,7 @@ static void script_new_line(void *ctx)
struct metric_ctx *mctx = ctx;

perf_sample__fprintf_start(mctx->sample, mctx->thread, mctx->evsel,
- mctx->fp);
+ PERF_RECORD_SAMPLE, mctx->fp);
fputs("\tmetric: ", mctx->fp);
}

@@ -1584,7 +1628,8 @@ static void process_event(struct perf_script *script,

++es->samples;

- perf_sample__fprintf_start(sample, thread, evsel, fp);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_SAMPLE, fp);

if (PRINT_FIELD(PERIOD))
fprintf(fp, "%10" PRIu64 " ", sample->period);
@@ -1833,7 +1878,8 @@ static int process_comm_event(struct perf_tool *tool,
sample->tid = event->comm.tid;
sample->pid = event->comm.pid;
}
- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_COMM, stdout);
perf_event__fprintf(event, stdout);
ret = 0;
out:
@@ -1868,7 +1914,8 @@ static int process_namespaces_event(struct perf_tool *tool,
sample->tid = event->namespaces.tid;
sample->pid = event->namespaces.pid;
}
- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_NAMESPACES, stdout);
perf_event__fprintf(event, stdout);
ret = 0;
out:
@@ -1901,7 +1948,8 @@ static int process_fork_event(struct perf_tool *tool,
sample->tid = event->fork.tid;
sample->pid = event->fork.pid;
}
- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_FORK, stdout);
perf_event__fprintf(event, stdout);
thread__put(thread);

@@ -1930,7 +1978,8 @@ static int process_exit_event(struct perf_tool *tool,
sample->tid = event->fork.tid;
sample->pid = event->fork.pid;
}
- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_EXIT, stdout);
perf_event__fprintf(event, stdout);

if (perf_event__process_exit(tool, event, sample, machine) < 0)
@@ -1965,7 +2014,8 @@ static int process_mmap_event(struct perf_tool *tool,
sample->tid = event->mmap.tid;
sample->pid = event->mmap.pid;
}
- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_MMAP, stdout);
perf_event__fprintf(event, stdout);
thread__put(thread);
return 0;
@@ -1996,7 +2046,8 @@ static int process_mmap2_event(struct perf_tool *tool,
sample->tid = event->mmap2.tid;
sample->pid = event->mmap2.pid;
}
- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_MMAP2, stdout);
perf_event__fprintf(event, stdout);
thread__put(thread);
return 0;
@@ -2022,7 +2073,8 @@ static int process_switch_event(struct perf_tool *tool,
return -1;
}

- perf_sample__fprintf_start(sample, thread, evsel, stdout);
+ perf_sample__fprintf_start(sample, thread, evsel,
+ PERF_RECORD_SWITCH, stdout);
perf_event__fprintf(event, stdout);
thread__put(thread);
return 0;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 1ae95ef..e5fbd6d 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -205,6 +205,7 @@ struct perf_sample {
u32 flags;
u16 insn_len;
u8 cpumode;
+ u16 misc;
char insn[MAX_INSN];
void *raw_data;
struct ip_callchain *callchain;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index c435b24..d934f04e3 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2042,6 +2042,7 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
data->stream_id = data->id = data->time = -1ULL;
data->period = evsel->attr.sample_period;
data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+ data->misc = event->header.misc;
data->id = -1ULL;
data->data_src = PERF_MEM_DATA_SRC_NONE;

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