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perf top: Use a macro instead of a constant variable

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To overcome a silly gcc warning:

 cc1: warnings being treated as errors
 builtin-top.c: In function ‘lookup_sym_source’:
 builtin-top.c:291: warning: not protecting local variables:
 variable length buffer make: *** [builtin-top.o] Error 1
 make: *** Waiting for unfinished jobs....

That is emitted for this:

	const size_t pattern_len = BITS_PER_LONG / 4 + 2;
	char pattern[pattern_len + 1];

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1266866062-6287-1-git-send-email-acme@infradead.org>
[ -v2: macroify the naming style ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2010-02-22 16:14:22 -03:00 committed by Ingo Molnar
parent 37fe5fcb7a
commit c7ad21af2c
1 changed files with 4 additions and 3 deletions
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7
tools/perf/builtin-top.c
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@ -287,19 +287,20 @@ static void record_precise_ip(struct sym_entry *syme, int counter, u64 ip)
pthread_mutex_unlock(&syme->src->lock);
}
#define PATTERN_LEN (BITS_PER_LONG / 4 + 2)
static void lookup_sym_source(struct sym_entry *syme)
{
struct symbol *symbol = sym_entry__symbol(syme);
struct source_line *line;
const size_t pattern_len = BITS_PER_LONG / 4 + 2;
char pattern[pattern_len + 1];
char pattern[PATTERN_LEN + 1];
sprintf(pattern, "%0*Lx <", BITS_PER_LONG / 4,
map__rip_2objdump(syme->map, symbol->start));
pthread_mutex_lock(&syme->src->lock);
for (line = syme->src->lines; line; line = line->next) {
if (memcmp(line->line, pattern, pattern_len) == 0) {
if (memcmp(line->line, pattern, PATTERN_LEN) == 0) {
syme->src->source = line;
break;
}