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gcov: support GCC 7.1

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Starting from GCC 7.1, __gcov_exit is a new symbol expected to be
implemented in a profiling runtime.

[[email protected]: coding-style fixes]
[[email protected]: v2]
  Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Martin Liska <[email protected]>
Acked-by: Peter Oberparleiter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Martin Liska 2017-05-12 15:46:35 -07:00 • committed by Linus Torvalds
commit 0538421343
2 changed files with 9 additions and 1 deletions
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6
kernel/gcov/base.c
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@ -98,6 +98,12 @@ void __gcov_merge_icall_topn(gcov_type *counters, unsigned int n_counters)
}
EXPORT_SYMBOL(__gcov_merge_icall_topn);
void __gcov_exit(void)
{
/* Unused. */
}
EXPORT_SYMBOL(__gcov_exit);
/**
* gcov_enable_events - enable event reporting through gcov_event()
*

4
kernel/gcov/gcc_4_7.c
View file

@ -18,7 +18,9 @@
#include <linux/vmalloc.h>
#include "gcov.h"
#if (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
#if (__GNUC__ >= 7)
#define GCOV_COUNTERS 9
#elif (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
#define GCOV_COUNTERS 10
#elif __GNUC__ == 4 && __GNUC_MINOR__ >= 9
#define GCOV_COUNTERS 9