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| author | Jiri Olsa <[email protected]> | 2020-12-26 23:20:38 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2021-01-20 17:34:21 +0000 |
| commit | 47fddcb479e73c341fb414e40a89572dacadd360 (patch) | |
| tree | 6a968b553d33efc8b1abb4b1814650a23c46f365 /tools/perf/builtin-script.c | |
| parent | perf tools: Add 'stop' control command (diff) | |
| download | kernel-47fddcb479e73c341fb414e40a89572dacadd360.tar.gz kernel-47fddcb479e73c341fb414e40a89572dacadd360.zip | |
perf tools: Add 'ping' control command
Add a control 'ping' command to detect if perf is up and its control
interface is operational.
It will be used in following daemon patches to synchronize with record
session - when control interface is up and running, we know that perf
record is monitoring and ready to receive signals.
Example session:
terminal 1:
# mkfifo control ack
# perf record --control=fifo:control,ack
terminal 2:
# echo ping > control
# cat ack
ack
Signed-off-by: Jiri Olsa <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexei Budankov <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'tools/perf/builtin-script.c')
0 files changed, 0 insertions, 0 deletions