Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e23b8ad8 authored by Markus Metzger's avatar Markus Metzger Committed by Ingo Molnar
Browse files

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: default avatarMarkus Metzger <markus.t.metzger@intel.com>
Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent b1818748

kernel/trace/trace_hw_branches.c

+7 −1
Original line number Original line Diff line number Diff line
@@ -274,6 +274,11 @@ static void trace_bts_prepare(struct trace_iterator *iter) 
	mutex_unlock(&bts_tracer_mutex);

	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)

void trace_hw_branch_oops(void)

{

{

	mutex_lock(&bts_tracer_mutex);

	mutex_lock(&bts_tracer_mutex);
@@ -292,7 +297,8 @@ struct tracer bts_tracer __read_mostly = 
	.print_line	= bts_trace_print_line,

	.print_line	= bts_trace_print_line,

	.start		= bts_trace_start,

	.start		= bts_trace_start,

	.stop		= bts_trace_stop,

	.stop		= bts_trace_stop,

	.open		= trace_bts_prepare

	.open		= trace_bts_prepare,

	.close		= trace_bts_close

};

};





__init static int init_bts_trace(void)

__init static int init_bts_trace(void)