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authorFelipe Balbi <felipe.balbi@linux.intel.com>2017-06-02 13:20:25 +0300
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-12-04 15:14:30 +0300
commita773d419275bf54854ca6cfda8f2594ed2790faa (patch)
tree49d4dbdcc1a3ccc4263dd61a297a66dbad0b69e4 /drivers
parentc4bfd39d7fa5203d4b387c283d360e9a108e85b3 (diff)
downloadlinux-a773d419275bf54854ca6cfda8f2594ed2790faa.tar.xz
tracing: Pass export pointer as argument to ->write()
By passing an export descriptor to the write function, users don't need to keep a global static pointer and can rely on container_of() to fetch their own structure. Link: http://lkml.kernel.org/r/20170602102025.5140-1-felipe.balbi@linux.intel.com Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Chunyan Zhang <zhang.chunyan@linaro.org> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/hwtracing/stm/ftrace.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hwtracing/stm/ftrace.c b/drivers/hwtracing/stm/ftrace.c
index bd126a7c6da2..7da75644c750 100644
--- a/drivers/hwtracing/stm/ftrace.c
+++ b/drivers/hwtracing/stm/ftrace.c
@@ -42,9 +42,11 @@ static struct stm_ftrace {
* @len: length of the data packet
*/
static void notrace
-stm_ftrace_write(const void *buf, unsigned int len)
+stm_ftrace_write(struct trace_export *export, const void *buf, unsigned int len)
{
- stm_source_write(&stm_ftrace.data, STM_FTRACE_CHAN, buf, len);
+ struct stm_ftrace *stm = container_of(export, struct stm_ftrace, ftrace);
+
+ stm_source_write(&stm->data, STM_FTRACE_CHAN, buf, len);
}
static int stm_ftrace_link(struct stm_source_data *data)