mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-09-22 22:11:38 +08:00
d062ac16f5
Processing instruction tracing data (e.g. Intel PT) can synthesize
callchains e.g.
$ perf record -e intel_pt//u uname
$ perf report --stdio --itrace=ige
However perf report's callgraph option gets extra validation, so:
$ perf report --stdio --itrace=ige -gflat
Error:
Selected -g or --branch-history but no callchain data. Did
you call 'perf record' without -g?
# To display the perf.data header info,
# please use --header/--header-only options.
#
Fix the validation to know about instruction tracing options so
above command works.
A side-effect of the change is that the default option to
accumulate the callchain of child functions comes into force.
To get the previous behaviour the --no-children option can be
used e.g.
$ perf report --stdio --itrace=ige -gflat --no-children
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
||
|---|---|---|
| .. | ||
| arch | ||
| build | ||
| cgroup | ||
| firewire | ||
| hv | ||
| iio | ||
| include | ||
| laptop/freefall | ||
| lguest | ||
| lib | ||
| net | ||
| nfsd | ||
| perf | ||
| power | ||
| scripts | ||
| testing | ||
| thermal/tmon | ||
| time | ||
| usb | ||
| virtio | ||
| vm | ||
| Makefile | ||