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(parent: 060287b) | patch
tracing/function: Introduce persistent trace option
authorAnton Vorontsov <anton.vorontsov@linaro.org>
Tue, 10 Jul 2012 00:10:42 +0000 (17:10 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 17 Jul 2012 17:07:00 +0000 (10:07 -0700)
commit21f679404a0c28bd5b1b3aff2a7218bbff4cb43d
tree9a5f1d0be079dfe225e2993331f9ddfac36cb7fctree | snapshot
parent060287b8c467bf49a594d8d669e1986c6d8d76b0commit | diff
tracing/function: Introduce persistent trace option

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>
kernel/trace/trace_functions.c diff | blob | history
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