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>

4 files changed, 84 insertions, 12 deletions

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 7b622a812a72..93ae8d60e3d3 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 330dcd9b9b8f..bb603495cf4a 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 1ae95efbfb95..e5fbd6dd1b01 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 c435b2444153..d934f04e3110 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;