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perf-record: Check correct pid when forking
When forking the child to be traced, we should check the correct return value from fork() and not a local variable which is otherwise unused. Signed-off-by: Borislav Petkov <bp@alien8.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <20100531211818.GA30175@liondog.tnic> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
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@ -503,7 +503,6 @@ static int __cmd_record(int argc, const char **argv)
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{
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int i, counter;
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struct stat st;
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pid_t pid = 0;
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int flags;
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int err;
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unsigned long waking = 0;
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@ -572,7 +571,7 @@ static int __cmd_record(int argc, const char **argv)
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if (forks) {
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child_pid = fork();
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if (pid < 0) {
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if (child_pid < 0) {
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perror("failed to fork");
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exit(-1);
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}
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