perf evlist: Tidy duplicated munmap code

The same lines of code are used in three places.  Make it a new function
'__perf_evlist__munmap()'.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1372944040-32690-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index d8f34e0..42ea4e9 100644 (file)
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -403,16 +403,20 @@ union perf_event *perf_evlist__mmap_read(struct perf_evlist *evlist, int idx)
        return event;
 }
 
+static void __perf_evlist__munmap(struct perf_evlist *evlist, int idx)
+{
+       if (evlist->mmap[idx].base != NULL) {
+               munmap(evlist->mmap[idx].base, evlist->mmap_len);
+               evlist->mmap[idx].base = NULL;
+       }
+}
+
 void perf_evlist__munmap(struct perf_evlist *evlist)
 {
        int i;
 
-       for (i = 0; i < evlist->nr_mmaps; i++) {
-               if (evlist->mmap[i].base != NULL) {
-                       munmap(evlist->mmap[i].base, evlist->mmap_len);
-                       evlist->mmap[i].base = NULL;
-               }
-       }
+       for (i = 0; i < evlist->nr_mmaps; i++)
+               __perf_evlist__munmap(evlist, i);
 
        free(evlist->mmap);
        evlist->mmap = NULL;
@@ -477,12 +481,8 @@ static int perf_evlist__mmap_per_cpu(struct perf_evlist *evlist, int prot, int m
        return 0;
 
 out_unmap:
-       for (cpu = 0; cpu < nr_cpus; cpu++) {
-               if (evlist->mmap[cpu].base != NULL) {
-                       munmap(evlist->mmap[cpu].base, evlist->mmap_len);
-                       evlist->mmap[cpu].base = NULL;
-               }
-       }
+       for (cpu = 0; cpu < nr_cpus; cpu++)
+               __perf_evlist__munmap(evlist, cpu);
        return -1;
 }
 
@@ -517,12 +517,8 @@ static int perf_evlist__mmap_per_thread(struct perf_evlist *evlist, int prot, in
        return 0;
 
 out_unmap:
-       for (thread = 0; thread < nr_threads; thread++) {
-               if (evlist->mmap[thread].base != NULL) {
-                       munmap(evlist->mmap[thread].base, evlist->mmap_len);
-                       evlist->mmap[thread].base = NULL;
-               }
-       }
+       for (thread = 0; thread < nr_threads; thread++)
+               __perf_evlist__munmap(evlist, thread);
        return -1;
 }