linux-kernel - Re: [PATCH] perf report: include partial stacks unwound with libdw

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Date:   Fri, 2 Jun 2017 11:59:22 -0300
From:   Arnaldo Carvalho de Melo <acme@...hat.com>
To:     Milian Wolff <milian.wolff@...b.com>
Cc:     Linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Namhyung Kim <namhyung@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>, acme@...nel.org
Subject: Re: [PATCH] perf report: include partial stacks unwound with libdw

Em Thu, Jun 01, 2017 at 11:00:21PM +0200, Milian Wolff escreveu:
> With this patch applied, the libdw unwinder will produce the same
> output as the libunwind unwinder.

> +++ b/tools/perf/util/unwind-libdw.c
> @@ -224,7 +224,7 @@ int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
>  
>  	err = dwfl_getthread_frames(ui->dwfl, thread->tid, frame_callback, ui);
>  
> -	if (err && !ui->max_stack)
> +	if (err && ui->max_stack != max_stack)
>  		err = 0;

Simple enough, thanks a lot, applied!

- Arnaldo