ftrace: disable ftrace on anomalies in trace start and stop

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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>

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Steven Rostedt 2008-11-14 16:21:19 -08:00 • committed by Ingo Molnar

parent f3c7ac40a9

commit b17e8a37a1

1 changed files with 44 additions and 37 deletions

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kernel/trace/ftrace.c

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