coresight: Mark stm_generic_packet() with notrace

If CONFIG_STM_SOURCE_FTRACE is selected, Function trace data can be writen to sink via STM, all functions that related to writing data packets to STM should be marked 'notrace' to avoid being traced by Ftrace, otherwise the program would stall into an endless loop. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Chunyan Zhang <[email protected]> Acked-by: Alexander Shishkin <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
imcsk8 · Nov 22, 2016 · dea5d0e · dea5d0e
1 parent 262e1f6
commit dea5d0e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
@@ -406,7 +406,7 @@ static long stm_generic_set_options(struct stm_data *stm_data,
 	return 0;
 }
 
-static ssize_t stm_generic_packet(struct stm_data *stm_data,
+static ssize_t notrace stm_generic_packet(struct stm_data *stm_data,
 				  unsigned int master,
 				  unsigned int channel,
 				  unsigned int packet,