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authorChunyan Zhang2016-11-21 15:57:20 +0800
committerSteven Rostedt2016-11-22 17:47:53 -0500
commitdea5d0e1fcac657ea0d699afb1595e52cb051d46 (patch)
tree3e372fcc3bed48094da930d8ed4aface33c143c7
parent262e1f6e39143c2a0f559e2fb4a835069a7693a9 (diff)
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/1479715043-6534-4-git-send-email-zhang.chunyan@linaro.org Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--drivers/hwtracing/coresight/coresight-stm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index 49e0f1b925a5..b7543bd19c9e 100644
--- 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,