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(parent: f3c7ac4) | patch
ftrace: disable ftrace on anomalies in trace start and stop
authorSteven Rostedt <srostedt@redhat.com>
Sat, 15 Nov 2008 00:21:19 +0000 (16:21 -0800)
committerIngo Molnar <mingo@elte.hu>
Sun, 16 Nov 2008 06:30:07 +0000 (07:30 +0100)
commitb17e8a37a13d0e87165054714434534bb7e69f2d
tree0acfd6ec460bfab35807eb6be058d946c380353etree | snapshot (tar.gz zip)
parentf3c7ac40a99f4044b843e6e2c4f46ab2d354c563commit | diff
ftrace: disable ftrace on anomalies in trace start and stop

Impact: robust feature to disable ftrace on start or stop tracing on error

Currently only the initial conversion to nops will disable ftrace
on an anomaly. But if an anomaly happens on start or stopping of the
tracer, it will silently fail.

This patch adds a check there too, to disable ftrace and warn if the
conversion fails.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/trace/ftrace.c diff | blob | blame | history