From 50c95cbd70808aa2e5ba8d79e503456f1da37aeb Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 12 Sep 2013 12:35:21 -0300 Subject: [PATCH] perf trace: Add option to show process COMM Enabled by default, disable with --no-comm, e.g.: 181.821 (0.001 ms): deja-dup-monit/10784 recvmsg(fd: 8, msg: 0x7fff4342baf0, flags: PEEK|TRUNC|CMSG_CLOEXEC ) = 20 181.824 (0.001 ms): deja-dup-monit/10784 geteuid( ) = 1000 181.825 (0.001 ms): deja-dup-monit/10784 getegid( ) = 1000 181.834 (0.002 ms): deja-dup-monit/10784 recvmsg(fd: 8, msg: 0x7fff4342baf0, flags: CMSG_CLOEXEC ) = 20 181.836 (0.001 ms): deja-dup-monit/10784 geteuid( ) = 1000 181.838 (0.001 ms): deja-dup-monit/10784 getegid( ) = 1000 181.705 (0.003 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: PEEK|TRUNC|CMSG_CLOEXEC) = 1256 181.710 (0.002 ms): evolution-addr/10924 geteuid( ) = 1000 181.712 (0.001 ms): evolution-addr/10924 getegid( ) = 1000 181.727 (0.003 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: CMSG_CLOEXEC ) = 1256 181.731 (0.001 ms): evolution-addr/10924 geteuid( ) = 1000 181.734 (0.001 ms): evolution-addr/10924 getegid( ) = 1000 181.908 (0.002 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: PEEK|TRUNC|CMSG_CLOEXEC) = 20 181.913 (0.001 ms): evolution-addr/10924 geteuid( ) = 1000 181.915 (0.001 ms): evolution-addr/10924 getegid( ) = 1000 181.930 (0.003 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: CMSG_CLOEXEC ) = 20 181.934 (0.001 ms): evolution-addr/10924 geteuid( ) = 1000 181.937 (0.001 ms): evolution-addr/10924 getegid( ) = 1000 220.718 (0.010 ms): at-spi2-regist/10715 sendmsg(fd: 3, msg: 0x7fffdb8756c0, flags: NOSIGNAL ) = 200 220.741 (0.000 ms): dbus-daemon/10711 ... [continued]: epoll_wait()) = 1 220.759 (0.004 ms): dbus-daemon/10711 recvmsg(fd: 11, msg: 0x7ffff94594d0, flags: CMSG_CLOEXEC ) = 200 220.780 (0.002 ms): dbus-daemon/10711 recvmsg(fd: 11, msg: 0x7ffff94594d0, flags: CMSG_CLOEXEC ) = 200 220.788 (0.001 ms): dbus-daemon/10711 recvmsg(fd: 11, msg: 0x7ffff94594d0, flags: CMSG_CLOEXEC ) = -1 EAGAIN Resource temporarily unavailable 220.760 (0.004 ms): at-spi2-regist/10715 sendmsg(fd: 3, msg: 0x7fffdb8756c0, flags: NOSIGNAL ) = 200 220.771 (0.023 ms): perf/26347 open(filename: 0xf2e780, mode: 15918976 ) = 19 220.850 (0.002 ms): perf/26347 close(fd: 19 ) = 0 Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-6be5jvnkdzjptdrebfn5263n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-trace.txt | 3 +++ tools/perf/builtin-trace.c | 9 ++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt index a93e91aad583..37773854d5c4 100644 --- a/tools/perf/Documentation/perf-trace.txt +++ b/tools/perf/Documentation/perf-trace.txt @@ -82,6 +82,9 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. --time Print full timestamp rather time relative to first sample. +--comm:: + Show process COMM right beside its ID, on by default, disable with --no-comm. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-script[1] diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 8a09ba3dcd97..be658433d3bb 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -726,6 +726,7 @@ struct trace { struct intlist *pid_list; bool sched; bool multiple_threads; + bool show_comm; double duration_filter; double runtime_ms; }; @@ -755,8 +756,11 @@ static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thre size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); printed += fprintf_duration(duration, fp); - if (trace->multiple_threads) + if (trace->multiple_threads) { + if (trace->show_comm) + printed += fprintf(fp, "%.14s/", thread->comm); printed += fprintf(fp, "%d ", thread->tid); + } return printed; } @@ -1503,10 +1507,13 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) .mmap_pages = 1024, }, .output = stdout, + .show_comm = true, }; const char *output_name = NULL; const char *ev_qualifier_str = NULL; const struct option trace_options[] = { + OPT_BOOLEAN(0, "comm", &trace.show_comm, + "show the thread COMM next to its id"), OPT_STRING('e', "expr", &ev_qualifier_str, "expr", "list of events to trace"), OPT_STRING('o', "output", &output_name, "file", "output file name"), -- 2.20.1