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Add a 'list' command to display all running sessions. It's the default
command if no other command is specified.
Example:
# cat ~/.perfconfig
[daemon]
base=/opt/perfdata
[session-cycles]
run = -m 10M -e cycles --overwrite --switch-output -a
[session-sched]
run = -m 20M -e sched:* --overwrite --switch-output -a
Start the daemon:
# perf daemon start
List sessions:
# perf daemon
[771394:daemon] base: /opt/perfdata
[771395:cycles] perf record -m 10M -e cycles --overwrite --switch-output -a
[771396:sched] perf record -m 20M -e sched:* --overwrite --switch-output -a
List sessions with more info:
# perf daemon -v
[771394:daemon] base: /opt/perfdata
output: /opt/perfdata/output
[771395:cycles] perf record -m 10M -e cycles --overwrite --switch-output -a
base: /opt/perfdata/session-cycles
output: /opt/perfdata/session-cycles/output
[771396:sched] perf record -m 20M -e sched:* --overwrite --switch-output -a
base: /opt/perfdata/session-sched
output: /opt/perfdata/session-sched/output
The 'output' file is perf record output for specific session.
Note you have to stop all running perf processes manually at this point,
stop command is coming in following patches.
Committer notes:
Fixup union initialization to overcome this in multiple older systems:
22 15.74 debian:8 : FAIL gcc version 4.9.2 (Debian 4.9.2-10+deb8u2)
builtin-daemon.c: In function 'send_cmd_list':
builtin-daemon.c:1386:2: error: missing initializer for field 'csv_sep' of 'struct <anonymous>' [-Werror=missing-field-initializers]
};
^
builtin-daemon.c:641:8: note: 'csv_sep' declared here
char csv_sep;
^
cc1: all warnings being treated as errors
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: https://lore.kernel.org/r/20210208200908.1019149-11-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
b325f7be25