perf stat record: Add pipe support for record command
Allowing storing stat record data into pipe, so report tools
(report/script) could read data directly from record.
Committer note:
Before this patch:
$ perf stat record -o - usleep 1 | perf report -i -
incompatible file format (rerun with -v to learn more)
$ perf stat record -o - usleep 1 | perf script -i -
incompatible file format (rerun with -v to learn more)
$ ls -la perf.data
ls: cannot access perf.data: No such file or directory
$
After:
$ perf stat record -o - usleep 1 | perf report -i -
# To display the perf.data header info, please use
# --header/--header-only options.
#
Error:
The - file has no samples!
$ perf stat record -o - usleep 1 | perf script -i -
Display of symbols requested but neither sample IP nor sample address
is selected. Hence, no addresses to convert to symbols.
0 [0x80]: failed to process type: 64
$ ls -la perf.data
ls: cannot access perf.data: No such file or directory
$
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 file changed
