mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 07:04:00 +08:00
826eba0d77
Patch series "gcov: add Clang support", v4. This patch (of 3): base.c contains a few callbacks specific to GCC's gcov implementation. Move these into their own module in preparation for Clang support. Link: http://lkml.kernel.org/r/20190318025411.98014-2-trong@android.com Signed-off-by: Greg Hackmann <ghackmann@android.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Tri Vo <trong@android.com> Tested-by: Trilok Soni <tsoni@quicinc.com> Tested-by: Prasad Sodagudi <psodagud@quicinc.com> Tested-by: Tri Vo <trong@android.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Cc: Daniel Mentz <danielmentz@google.com> Cc: Petri Gynther <pgynther@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include <linux/export.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mutex.h>
|
|
#include "gcov.h"
|
|
|
|
/*
|
|
* __gcov_init is called by gcc-generated constructor code for each object
|
|
* file compiled with -fprofile-arcs.
|
|
*/
|
|
void __gcov_init(struct gcov_info *info)
|
|
{
|
|
static unsigned int gcov_version;
|
|
|
|
mutex_lock(&gcov_lock);
|
|
if (gcov_version == 0) {
|
|
gcov_version = gcov_info_version(info);
|
|
/*
|
|
* Printing gcc's version magic may prove useful for debugging
|
|
* incompatibility reports.
|
|
*/
|
|
pr_info("version magic: 0x%x\n", gcov_version);
|
|
}
|
|
/*
|
|
* Add new profiling data structure to list and inform event
|
|
* listener.
|
|
*/
|
|
gcov_info_link(info);
|
|
if (gcov_events_enabled)
|
|
gcov_event(GCOV_ADD, info);
|
|
mutex_unlock(&gcov_lock);
|
|
}
|
|
EXPORT_SYMBOL(__gcov_init);
|
|
|
|
/*
|
|
* These functions may be referenced by gcc-generated profiling code but serve
|
|
* no function for kernel profiling.
|
|
*/
|
|
void __gcov_flush(void)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_flush);
|
|
|
|
void __gcov_merge_add(gcov_type *counters, unsigned int n_counters)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_merge_add);
|
|
|
|
void __gcov_merge_single(gcov_type *counters, unsigned int n_counters)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_merge_single);
|
|
|
|
void __gcov_merge_delta(gcov_type *counters, unsigned int n_counters)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_merge_delta);
|
|
|
|
void __gcov_merge_ior(gcov_type *counters, unsigned int n_counters)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_merge_ior);
|
|
|
|
void __gcov_merge_time_profile(gcov_type *counters, unsigned int n_counters)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_merge_time_profile);
|
|
|
|
void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_merge_icall_topn);
|
|
|
|
void __gcov_exit(void)
|
|
{
|
|
/* Unused. */
|
|
}
|
|
EXPORT_SYMBOL(__gcov_exit);
|