perf cs-etm: Fix definition of macro TO_CS_QUEUE_NR
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Message ID 20191021074808.25795-1-leo.yan@linaro.org
State New
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Series
  • perf cs-etm: Fix definition of macro TO_CS_QUEUE_NR
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Commit Message

Leo Yan Oct. 21, 2019, 7:48 a.m. UTC
Macro TO_CS_QUEUE_NR definition has a typo, which uses 'trace_id_chan'
as its parameter, this doesn't match with its definition body which uses
'trace_chan_id'.  So renames the parameter to 'trace_chan_id'.

It's luck to have a local variable 'trace_chan_id' in the function
cs_etm__setup_queue(), even we wrongly define the macro TO_CS_QUEUE_NR,
the local variable 'trace_chan_id' is used rather than the macro's
parameter 'trace_id_chan'; so the compiler doesn't complain for this
before.

After renaming the parameter, it leads to a compiling error due
cs_etm__setup_queue() has no variable 'trace_id_chan'.  This patch uses
the variable 'trace_chan_id' for the macro so that fixes the compiling
error.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 tools/perf/util/cs-etm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Mathieu Poirier Oct. 21, 2019, 5:42 p.m. UTC | #1
On Mon, 21 Oct 2019 at 01:48, Leo Yan <leo.yan@linaro.org> wrote:
>
> Macro TO_CS_QUEUE_NR definition has a typo, which uses 'trace_id_chan'
> as its parameter, this doesn't match with its definition body which uses
> 'trace_chan_id'.  So renames the parameter to 'trace_chan_id'.
>
> It's luck to have a local variable 'trace_chan_id' in the function
> cs_etm__setup_queue(), even we wrongly define the macro TO_CS_QUEUE_NR,
> the local variable 'trace_chan_id' is used rather than the macro's
> parameter 'trace_id_chan'; so the compiler doesn't complain for this
> before.
>
> After renaming the parameter, it leads to a compiling error due
> cs_etm__setup_queue() has no variable 'trace_id_chan'.  This patch uses
> the variable 'trace_chan_id' for the macro so that fixes the compiling
> error.
>
> Signed-off-by: Leo Yan <leo.yan@linaro.org>
> ---
>  tools/perf/util/cs-etm.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
> index 4ba0f871f086..f5f855fff412 100644
> --- a/tools/perf/util/cs-etm.c
> +++ b/tools/perf/util/cs-etm.c
> @@ -110,7 +110,7 @@ static int cs_etm__decode_data_block(struct cs_etm_queue *etmq);
>   * encode the etm queue number as the upper 16 bit and the channel as
>   * the lower 16 bit.
>   */
> -#define TO_CS_QUEUE_NR(queue_nr, trace_id_chan)        \
> +#define TO_CS_QUEUE_NR(queue_nr, trace_chan_id)        \
>                       (queue_nr << 16 | trace_chan_id)
>  #define TO_QUEUE_NR(cs_queue_nr) (cs_queue_nr >> 16)
>  #define TO_TRACE_CHAN_ID(cs_queue_nr) (cs_queue_nr & 0x0000ffff)
> @@ -819,7 +819,7 @@ static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm,
>          * Note that packets decoded above are still in the traceID's packet
>          * queue and will be processed in cs_etm__process_queues().
>          */
> -       cs_queue_nr = TO_CS_QUEUE_NR(queue_nr, trace_id_chan);
> +       cs_queue_nr = TO_CS_QUEUE_NR(queue_nr, trace_chan_id);
>         ret = auxtrace_heap__add(&etm->heap, cs_queue_nr, timestamp);
>  out:
>         return ret;

Really good catch - Arnaldo please consider.

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

> --
> 2.17.1
>
Arnaldo Carvalho de Melo Oct. 21, 2019, 8:18 p.m. UTC | #2
Em Mon, Oct 21, 2019 at 11:42:21AM -0600, Mathieu Poirier escreveu:
> On Mon, 21 Oct 2019 at 01:48, Leo Yan <leo.yan@linaro.org> wrote:
> >
> > Macro TO_CS_QUEUE_NR definition has a typo, which uses 'trace_id_chan'
> > as its parameter, this doesn't match with its definition body which uses
> > 'trace_chan_id'.  So renames the parameter to 'trace_chan_id'.
> >
> > It's luck to have a local variable 'trace_chan_id' in the function
> > cs_etm__setup_queue(), even we wrongly define the macro TO_CS_QUEUE_NR,
> > the local variable 'trace_chan_id' is used rather than the macro's
> > parameter 'trace_id_chan'; so the compiler doesn't complain for this
> > before.
> >
> > After renaming the parameter, it leads to a compiling error due
> > cs_etm__setup_queue() has no variable 'trace_id_chan'.  This patch uses
> > the variable 'trace_chan_id' for the macro so that fixes the compiling
> > error.
> >
> > Signed-off-by: Leo Yan <leo.yan@linaro.org>
> > ---
> >  tools/perf/util/cs-etm.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
> > index 4ba0f871f086..f5f855fff412 100644
> > --- a/tools/perf/util/cs-etm.c
> > +++ b/tools/perf/util/cs-etm.c
> > @@ -110,7 +110,7 @@ static int cs_etm__decode_data_block(struct cs_etm_queue *etmq);
> >   * encode the etm queue number as the upper 16 bit and the channel as
> >   * the lower 16 bit.
> >   */
> > -#define TO_CS_QUEUE_NR(queue_nr, trace_id_chan)        \
> > +#define TO_CS_QUEUE_NR(queue_nr, trace_chan_id)        \
> >                       (queue_nr << 16 | trace_chan_id)
> >  #define TO_QUEUE_NR(cs_queue_nr) (cs_queue_nr >> 16)
> >  #define TO_TRACE_CHAN_ID(cs_queue_nr) (cs_queue_nr & 0x0000ffff)
> > @@ -819,7 +819,7 @@ static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm,
> >          * Note that packets decoded above are still in the traceID's packet
> >          * queue and will be processed in cs_etm__process_queues().
> >          */
> > -       cs_queue_nr = TO_CS_QUEUE_NR(queue_nr, trace_id_chan);
> > +       cs_queue_nr = TO_CS_QUEUE_NR(queue_nr, trace_chan_id);
> >         ret = auxtrace_heap__add(&etm->heap, cs_queue_nr, timestamp);
> >  out:
> >         return ret;
> 
> Really good catch - Arnaldo please consider.
> 
> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Thanks, applied.

- Arnaldo

Patch
diff mbox series

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 4ba0f871f086..f5f855fff412 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -110,7 +110,7 @@  static int cs_etm__decode_data_block(struct cs_etm_queue *etmq);
  * encode the etm queue number as the upper 16 bit and the channel as
  * the lower 16 bit.
  */
-#define TO_CS_QUEUE_NR(queue_nr, trace_id_chan)	\
+#define TO_CS_QUEUE_NR(queue_nr, trace_chan_id)	\
 		      (queue_nr << 16 | trace_chan_id)
 #define TO_QUEUE_NR(cs_queue_nr) (cs_queue_nr >> 16)
 #define TO_TRACE_CHAN_ID(cs_queue_nr) (cs_queue_nr & 0x0000ffff)
@@ -819,7 +819,7 @@  static int cs_etm__setup_queue(struct cs_etm_auxtrace *etm,
 	 * Note that packets decoded above are still in the traceID's packet
 	 * queue and will be processed in cs_etm__process_queues().
 	 */
-	cs_queue_nr = TO_CS_QUEUE_NR(queue_nr, trace_id_chan);
+	cs_queue_nr = TO_CS_QUEUE_NR(queue_nr, trace_chan_id);
 	ret = auxtrace_heap__add(&etm->heap, cs_queue_nr, timestamp);
 out:
 	return ret;