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perf tools: Introduce zfree

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For the frequent idiom of:

   free(ptr);
   ptr = NULL;

Make it expect a pointer to the pointer being freed, so that it becomes
clear at first sight that the variable being freed is being modified.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-pfw02ezuab37kha18wlut7ir@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2013-12-26 17:41:15 -03:00
parent f5385650c0
commit 046625231a
22 changed files with 56 additions and 103 deletions
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6
tools/perf/util/probe-event.c
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@@ -506,15 +506,13 @@ static int get_real_path(const char *raw_path, const char *comp_dir,
case EFAULT:
raw_path = strchr(++raw_path, '/');
if (!raw_path) {
free(*new_path);
*new_path = NULL;
zfree(new_path);
return -ENOENT;
}
continue;
default:
free(*new_path);
*new_path = NULL;
zfree(new_path);
return -errno;
}
}