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tools lib: Adopt memchr_inv() from kernel

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commit b3e453272d436aab8adbe810c6d7043670281487 upstream.

We'll use it to check for undefined/zero data.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201126170026.2619053-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Olsa
2020-11-26 18:00:06 +01:00
committed by Greg Kroah-Hartman
parent ebcd3fd920
commit 87c4144450
2 changed files with 59 additions and 0 deletions
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tools/include/linux/string.h
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@@ -46,4 +46,5 @@ extern char * __must_check skip_spaces(const char *);
extern char *strim(char *);
extern void *memchr_inv(const void *start, int c, size_t bytes);
#endif /* _TOOLS_LINUX_STRING_H_ */