diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2016-01-07 20:41:53 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-01-08 13:15:46 -0300 |
| commit | 14cbfbeb76540cc0c53fbb0ba34b3a4900ebe40f (patch) | |
| tree | 51bc19a46a576c64d784b6c0713eee59c8f73de3 /tools/perf/Build | |
| parent | fc284be9d88528dd2a28d5471e40a6acde6c3036 (diff) | |
perf report: Show random usage tip on the help line
Currently perf report only shows a help message "For a higher level
overview, try: perf report --sort comm,dso" unconditionally (even if
the sort keys were used). Add more help tips and show randomly.
Load tips from ${prefix}/share/doc/perf-tip/tips.txt file.
$ perf report | tail
0.10% swapper [kernel.vmlinux] [k] irq_exit
0.09% swapper [kernel.vmlinux] [k] flush_smp_call_function_queue
0.08% swapper [kernel.vmlinux] [k] native_write_msr_safe
0.03% swapper [kernel.vmlinux] [k] group_sched_in
0.01% perf [kernel.vmlinux] [k] native_write_msr_safe
#
# (Tip: Search options using a keyword: perf report -h <keyword>)
#
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1452166913-27046-1-git-send-email-namhyung@kernel.org
[ Renamed it to perf_tip() and the parameter dirname to dirpath to fix the build on older distros ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Build')
| -rw-r--r-- | tools/perf/Build | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/Build b/tools/perf/Build index 00c4b8c3d8ca..6b67e6f4179f 100644 --- a/tools/perf/Build +++ b/tools/perf/Build @@ -41,6 +41,7 @@ CFLAGS_perf.o += -DPERF_HTML_PATH="BUILD_STR($(htmldir_SQ))" \ -DPREFIX="BUILD_STR($(prefix_SQ))" \ -include $(OUTPUT)PERF-VERSION-FILE CFLAGS_builtin-trace.o += -DSTRACE_GROUPS_DIR="BUILD_STR($(STRACE_GROUPS_DIR_SQ))" +CFLAGS_builtin-report.o += -DTIPDIR="BUILD_STR($(tipdir_SQ))" libperf-y += util/ libperf-y += arch/ |