From 1d4db00a5e30c7b8f8dc2a1b19e886fd942be143 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 12 May 2008 21:20:45 +0200 Subject: [PATCH] ftrace: reset selftests 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 Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- kernel/trace/trace.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8755a43..6580e7e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -289,6 +289,13 @@ int register_tracer(struct tracer *type) printk(KERN_CONT "FAILED!\n"); 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"); } #endif -- 2.7.4