tracing/function: Introduce persistent trace option

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This patch introduces 'func_ptrace' option, now available in
/sys/kernel/debug/tracing/options when function tracer
is selected.

The patch also adds some tiny code that calls back to pstore
to record the trace. The callback is no-op when PSTORE=n.

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Anton Vorontsov 2012-07-09 17:10:42 -07:00 • committed by Greg Kroah-Hartman

parent 060287b8c4

commit 21f679404a

1 changed files with 20 additions and 5 deletions

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kernel/trace/trace_functions.c

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