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perf probe: Fix multiple --vars options behavior

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Fix a bug that perf-probe fails to initialize libdwfl and shows incorrect error
when user gives multiple --vars options.

Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110330092553.2132.42691.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu 2011-03-30 18:25:53 +09:00 committed by Arnaldo Carvalho de Melo
parent f0c4801a17
commit cc446446ff
1 changed files with 8 additions and 8 deletions
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16
tools/perf/util/probe-event.c
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@ -510,18 +510,18 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
if (ret < 0)
return ret;
fd = open_vmlinux(module);
if (fd < 0) {
pr_warning("Failed to open debug information file.\n");
return fd;
}
setup_pager();
for (i = 0; i < npevs && ret >= 0; i++)
for (i = 0; i < npevs && ret >= 0; i++) {
fd = open_vmlinux(module);
if (fd < 0) {
pr_warning("Failed to open debug information file.\n");
ret = fd;
break;
}
ret = show_available_vars_at(fd, &pevs[i], max_vls, _filter,
externs);
}
return ret;
}