Re: [PATCH v2] perf: detect when perf.data file not closed outproperly

[Ingo Molnar]

* David Ahern <dsahern@xxxxxxxxx> wrote:

> perf-record updates the header in the perf.data file at termination.
> Without this update perf-report (and other processing builtins) cannot
> properly read events from the file -- the algorithm in
> __perf_session__process_events depends on the data_size which is read
> from the file header and that function loops if data_size is 0.
> 
> Catch this condition when the file is opened and warn the user.
> 
> v2: put error message on one line
> 
> Signed-off-by: David Ahern <dsahern@xxxxxxxxx>
> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
> Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
> Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
> Cc: Stephane Eranian <eranian@xxxxxxxxxx>

Acked-by: Ingo Molnar <mingo@xxxxxxxxxx>

Thanks,

	Ingo
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