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ftrace: reset selftests

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The tests may leave stuff in the buffers. This resets the buffers
after each test is run. If a test fails, it does not reset the
buffer to avoid touching a buffer that is corrupted.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Steven Rostedt
2008-05-12 21:20:45 +02:00
committed by Thomas Gleixner
parent 08bafa0efc
commit 1d4db00a5e
1 changed files with 7 additions and 0 deletions
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7
kernel/trace/trace.c
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@@ -289,6 +289,13 @@ int register_tracer(struct tracer *type)
printk(KERN_CONT "FAILED!\n"); printk(KERN_CONT "FAILED!\n");
goto out; goto out;
} }
/* Only reset on passing, to avoid touching corrupted buffers */
for_each_possible_cpu(i) {
data = tr->data[i];
if (!head_page(data))
continue;
tracing_reset(data);
}
printk(KERN_CONT "PASSED\n"); printk(KERN_CONT "PASSED\n");
} }
#endif #endif