[PATCH 1/1] perf cs-etm: Output 0 instead of 0xdeadbeef when exception packets are flushed

Arnaldo Carvalho de Melo acme at kernel.org
Fri Jul 26 07:35:15 PDT 2024


On Tue, Jul 23, 2024 at 04:09:29PM +0100, Mike Leach wrote:
> On Mon, 22 Jul 2024 at 16:28, James Clark <james.clark at linaro.org> wrote:
> >
> > Normally exception packets don't directly output a branch sample, but
> > if they're the last record in a buffer then they will. Because they
> > don't have addresses set we'll see the placeholder value
> > CS_ETM_INVAL_ADDR (0xdeadbeef) in the output.
> >
> > Since commit 6035b6804bdf ("perf cs-etm: Support dummy address value for
> > CS_ETM_TRACE_ON packet") we've used 0 as an externally visible "not set"
> > address value. For consistency reasons and to not make exceptions look
> > like an error, change them to use 0 too.

<SNIP>
 
> Reviewed-by: Mike Leach <mike.leach at linaro.org>

Thanks, applied to tmp.perf-tools-next,

- Arnaldo



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