perf tools: Introduce zalloc() for the common calloc(1, N) case

This way we type less characters and it looks more like the
kzalloc kernel counterpart.

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: <1259071517-3242-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 6 deletions

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index c4ca974b36e3..8db85b4f553f 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -94,15 +94,14 @@ static void kernel_maps__fixup_end(void)
 static struct symbol *symbol__new(u64 start, u64 len, const char *name)
 {
         size_t namelen = strlen(name) + 1;
-        struct symbol *self = calloc(1, (symbol__priv_size +
-                                         sizeof(*self) + namelen));
-        if (!self)
+        struct symbol *self = zalloc(symbol__priv_size +
+                                     sizeof(*self) + namelen);
+        if (self == NULL)
                 return NULL;
 
-        if (symbol__priv_size) {
-                memset(self, 0, symbol__priv_size);
+        if (symbol__priv_size)
                 self = ((void *)self) + symbol__priv_size;
-        }
+
         self->start = start;
         self->end   = len ? start + len - 1 : start;