From: Markus Metzger Date: Mon, 19 Jan 2009 09:33:31 +0000 (+0100) Subject: x86, ftrace, hw-branch-tracer: reset trace buffer on close X-Git-Tag: v2.6.30-rc1~2^2~157^2~4 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e23b8ad83430a6fdfbdbfac365f5b0312dd57f10;p=karo-tx-linux.git x86, ftrace, hw-branch-tracer: reset trace buffer on close Reset the ftrace buffer on close. Since we use cyclic buffers, the trace is not contiguous, anyway. Signed-off-by: Markus Metzger Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar --- diff --git a/kernel/trace/trace_hw_branches.c b/kernel/trace/trace_hw_branches.c index e56df2c7d679..372b47ac3154 100644 --- a/kernel/trace/trace_hw_branches.c +++ b/kernel/trace/trace_hw_branches.c @@ -274,6 +274,11 @@ static void trace_bts_prepare(struct trace_iterator *iter) mutex_unlock(&bts_tracer_mutex); } +static void trace_bts_close(struct trace_iterator *iter) +{ + tracing_reset_online_cpus(iter->tr); +} + void trace_hw_branch_oops(void) { mutex_lock(&bts_tracer_mutex); @@ -292,7 +297,8 @@ struct tracer bts_tracer __read_mostly = .print_line = bts_trace_print_line, .start = bts_trace_start, .stop = bts_trace_stop, - .open = trace_bts_prepare + .open = trace_bts_prepare, + .close = trace_bts_close }; __init static int init_bts_trace(void)