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23 October 2021, 00:29:24 UTC
Revision b1d84af6f58022a0d75f5745367624549cd0bfbf authored by Changbin Du on 08 August 2020, 02:31:31 UTC, committed by Arnaldo Carvalho de Melo on 14 August 2020, 12:16:43 UTC 
perf ftrace: Add support for tracing option 'func_stack_trace'
 
This adds support to display call trace for function tracer. To do this,
just specify a '--func-opts call-graph' option.

Example:

  $ sudo perf ftrace -T vfs_read --func-opts call-graph
   iio-sensor-prox-855   [003]   6168.369657: vfs_read <-ksys_read
   iio-sensor-prox-855   [003]   6168.369677: <stack trace>
   => vfs_read
   => ksys_read
   => __x64_sys_read
   => do_syscall_64
   => entry_SYSCALL_64_after_hwframe
   ...

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200808023141.14227-9-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 parent a80abe2
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Tip revision: b1d84af6f58022a0d75f5745367624549cd0bfbf authored by Changbin Du on 08 August 2020, 02:31:31 UTC
perf ftrace: Add support for tracing option 'func_stack_trace'
Tip revision: b1d84af
.get_maintainer.ignore 
Christoph Hellwig <hch@lst.de>
Marc Gonzalez <marc.w.gonzalez@free.fr>
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