Re: [PATCH 1/1] perf/tools: Fix "perf record -C... workload"behaviour

From: Jiri Olsa
Date: Mon Feb 25 2013 - 04:59:05 EST

On Wed, Feb 06, 2013 at 08:42:58PM +0100, Oleg Nesterov wrote:
> Test-case:
> # perf record -e probe_libc:syscall -C0 true
> true: Terminated
> The child process is killed by perf_record__sig_exit(). This is because
> perf_evlist__prepare_workload() doesn't initialize threads->map[] and
> then perf_event__synthesize_mmap_events() (silently!) fails. This patch

sorry for late reply..

I think the reason it fails is that it actually got inside
perf_event__synthesize_mmap_events while there's cpu list

I sent possible fix:

> seems to fix the problem, but perhaps we should also move
> 'pr_err("Couldn't run the workload!\n")' down to 'out_delete_session:',

I'll check ;-)

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at