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stm dummy: Mark dummy_stm_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/1479715043-6534-6-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>
This commit is contained in:
Chunyan Zhang 2016-11-21 15:57:22 +08:00 committed by Steven Rostedt
parent 22975be20f
commit 9b5e3ff6b9
1 changed files with 1 additions and 1 deletions
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2
drivers/hwtracing/stm/dummy_stm.c
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@ -21,7 +21,7 @@
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/stm.h> #include <linux/stm.h>
static ssize_t static ssize_t notrace
dummy_stm_packet(struct stm_data *stm_data, unsigned int master, dummy_stm_packet(struct stm_data *stm_data, unsigned int master,
unsigned int channel, unsigned int packet, unsigned int flags, unsigned int channel, unsigned int packet, unsigned int flags,
unsigned int size, const unsigned char *payload) unsigned int size, const unsigned char *payload)