ftrace: trace single pid for function graph tracer

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Impact: New feature

This patch makes the changes to set_ftrace_pid apply to the function
graph tracer.

  # echo $$ > /debugfs/tracing/set_ftrace_pid
  # echo function_graph > /debugfs/tracing/current_tracer

Will cause only the current task to be traced. Note, the trace flags are
also inherited by child processes, so the children of the shell
will also be traced.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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This commit is contained in:

Steven Rostedt 2008-12-03 15:36:59 -05:00 • committed by Ingo Molnar

parent 0ef8cde56a

commit 804a685162

3 changed files with 14 additions and 1 deletions

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2

kernel/trace/ftrace.c

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3

kernel/trace/trace.c

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10

kernel/trace/trace.h

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