perf top: Use a macro instead of a constant variable
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>
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index c72ab50..c670698 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -287,19 +287,20 @@
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;
}