Commit 22975be2 authored by Chunyan Zhang's avatar Chunyan Zhang Committed by Steven Rostedt

intel_th: Mark sth_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/1479715043-6534-5-git-send-email-zhang.chunyan@linaro.orgSigned-off-by: default avatarChunyan Zhang <zhang.chunyan@linaro.org>
Acked-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent dea5d0e1
...@@ -67,10 +67,13 @@ static void sth_iowrite(void __iomem *dest, const unsigned char *payload, ...@@ -67,10 +67,13 @@ static void sth_iowrite(void __iomem *dest, const unsigned char *payload,
} }
} }
static ssize_t sth_stm_packet(struct stm_data *stm_data, unsigned int master, static ssize_t notrace sth_stm_packet(struct stm_data *stm_data,
unsigned int channel, unsigned int packet, unsigned int master,
unsigned int flags, unsigned int size, unsigned int channel,
const unsigned char *payload) unsigned int packet,
unsigned int flags,
unsigned int size,
const unsigned char *payload)
{ {
struct sth_device *sth = container_of(stm_data, struct sth_device, stm); struct sth_device *sth = container_of(stm_data, struct sth_device, stm);
struct intel_th_channel __iomem *out = struct intel_th_channel __iomem *out =
......
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