linux-kernel - RE: [PATCH 2/5] perf tools: Use fallback for sample_addr_correlates

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Date:   Sat, 3 Nov 2018 17:46:54 +0000
From:   "Hunter, Adrian" <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
CC:     Jiri Olsa <jolsa@...hat.com>, Andi Kleen <ak@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "leo.yan@...aro.org" <leo.yan@...aro.org>,
        David Miller <davem@...emloft.net>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: RE: [PATCH 2/5] perf tools: Use fallback for
 sample_addr_correlates_sym() cases

> -----Original Message-----
> From: Hunter, Adrian
> Sent: Wednesday, October 31, 2018 11:11 AM
> To: Arnaldo Carvalho de Melo <acme@...nel.org>
> Cc: Jiri Olsa <jolsa@...hat.com>; Andi Kleen <ak@...ux.intel.com>; linux-
> kernel@...r.kernel.org; leo.yan@...aro.org; David Miller
> <davem@...emloft.net>; Mathieu Poirier <mathieu.poirier@...aro.org>
> Subject: [PATCH 2/5] perf tools: Use fallback for
> sample_addr_correlates_sym() cases
> 
> thread__resolve() is used in the sample_addr_correlates_sym() cases where
> 'addr' is a destination of a branch which does not necessarily have the
> same cpumode as the 'ip'. Use the fallback function in that case.
> 
> This patch depends on patch "perf tools: Add fallback functions for cases
> where cpumode is insufficient".
> 
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> Cc: stable@...r.kernel.org # 4.19

Any comments?

> ---
>  tools/perf/util/event.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
> index 52b24b8ce29e..316f62ffa27b 100644
> --- a/tools/perf/util/event.c
> +++ b/tools/perf/util/event.c
> @@ -1705,7 +1705,7 @@ bool sample_addr_correlates_sym(struct
> perf_event_attr *attr)
>  void thread__resolve(struct thread *thread, struct addr_location *al,
>  		     struct perf_sample *sample)
>  {
> -	thread__find_map(thread, sample->cpumode, sample->addr, al);
> +	thread__find_map_fallback(thread, sample->cpumode, sample-
> >addr, al);
> 
>  	al->cpu = sample->cpu;
>  	al->sym = NULL;
> --
> 2.17.1