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Date:   Thu, 18 Apr 2019 14:29:16 -0500
From:   Dan Rue <dan.rue@linaro.org>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Jiri Olsa <jolsa@kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Alexey Budankov <alexey.budankov@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Stephane Eranian <eranian@google.com>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Sasha Levin <sashal@kernel.org>
Subject: Re: [PATCH 5.0 05/93] perf data: Dont store auxtrace index for
 directory data file
Message-ID: <20190418192916.4v7bfjukc3ovei7o@xps.therub.org>
Mail-Followup-To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Jiri Olsa <jolsa@kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Alexey Budankov <alexey.budankov@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>, Namhyung Kim <namhyung@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Stephane Eranian <eranian@google.com>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Sasha Levin <sashal@kernel.org>
References: <20190418160436.781762249@linuxfoundation.org>
 <20190418160437.573320142@linuxfoundation.org>
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On Thu, Apr 18, 2019 at 07:56:43PM +0200, Greg Kroah-Hartman wrote:
> [ Upstream commit cd3dd8dd8ff62374d90cb3f2e54b8c94106c7810 ]
> 
> We can't store the auxtrace index when we store into multiple files,
> because we keep only offset for it, not the file.
> 
> The auxtrace data will be processed correctly in the 'pipe' mode.
> 
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> Cc: Adrian Hunter <adrian.hunter@intel.com>
> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
> Cc: Andi Kleen <ak@linux.intel.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Stephane Eranian <eranian@google.com>
> Link: http://lkml.kernel.org/r/20190308134745.5057-3-jolsa@kernel.org
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
>  tools/perf/builtin-record.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index 882285fb9f64..3fd154f1701b 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -386,7 +386,7 @@ static int record__process_auxtrace(struct perf_tool *tool,
>  	size_t padding;
>  	u8 pad[8] = {0};
>  
> -	if (!perf_data__is_pipe(data)) {
> +	if (!perf_data__is_pipe(data) && !perf_data__is_dir(data)) {

This causes the following build error on 5.0:

    builtin-top.c: In function ‘__cmd_top’:
    builtin-top.c:1241:3: error: label ‘out_delete’ used but not defined
       goto out_delete;
       ^~~~
    builtin-record.c: In function ‘record__process_auxtrace’:
    builtin-record.c:389:36: error: implicit declaration of function ‘perf_data__is_dir’; did you mean ‘perf_data__is_pipe’? [-Werror=implicit-function-declaration]
      if (!perf_data__is_pipe(data) && !perf_data__is_dir(data)) {
                                        ^~~~~~~~~~~~~~~~~
                                        perf_data__is_pipe
    builtin-record.c:389:36: error: nested extern declaration of ‘perf_data__is_dir’ [-Werror=nested-externs]

Dropping the patch solves this error, though there is a second perf
related build error in this RC caused by 2c0bd03b5d20 ("perf top: Delete
the evlist before perf_session, fixing heap-use-after-free issue").


>  		off_t file_offset;
>  		int fd = perf_data__fd(data);
>  		int err;
> -- 
> 2.19.1
> 
> 
> 

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