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ASoC: trace: add component to set_bias_level trace events

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The snd_soc_bias_level_start and snd_soc_bias_level_done trace events
currently look like:

           aplay-229   [000]  1250.140778: snd_soc_bias_level_start: card=vscn-2046 val=1
           aplay-229   [000]  1250.140784: snd_soc_bias_level_done: card=vscn-2046 val=1
           aplay-229   [000]  1250.140786: snd_soc_bias_level_start: card=vscn-2046 val=2
           aplay-229   [000]  1250.140788: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.140871: snd_soc_bias_level_start: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140951: snd_soc_bias_level_start: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140956: snd_soc_bias_level_done: card=vscn-2046 val=1
    kworker/u8:0-11    [000]  1250.140959: snd_soc_bias_level_start: card=vscn-2046 val=2
    kworker/u8:0-11    [000]  1250.140961: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.167219: snd_soc_bias_level_done: card=vscn-2046 val=1
    kworker/u8:1-21    [000]  1250.167222: snd_soc_bias_level_start: card=vscn-2046 val=2
    kworker/u8:1-21    [000]  1250.167232: snd_soc_bias_level_done: card=vscn-2046 val=2
    kworker/u8:0-11    [000]  1250.167440: snd_soc_bias_level_start: card=vscn-2046 val=3
    kworker/u8:0-11    [000]  1250.167444: snd_soc_bias_level_done: card=vscn-2046 val=3
    kworker/u8:1-21    [000]  1250.167497: snd_soc_bias_level_start: card=vscn-2046 val=3
    kworker/u8:1-21    [000]  1250.167506: snd_soc_bias_level_done: card=vscn-2046 val=3

There are clearly multiple calls, one per component, but they cannot be
discriminated from each other.

Change the ftrace events to also print the component name, to make it clear
which part of the code is involved. This requires changing the passed value
from a struct snd_soc_card, where the DAPM context is not kwown, to a
struct snd_soc_dapm_context where it is obviously known but the a card
pointer is also available.

With this change, the resulting trace becomes:

           aplay-247   [000]  1436.357332: snd_soc_bias_level_start: card=vscn-2046 component=(none) val=1
           aplay-247   [000]  1436.357338: snd_soc_bias_level_done: card=vscn-2046 component=(none) val=1
           aplay-247   [000]  1436.357340: snd_soc_bias_level_start: card=vscn-2046 component=(none) val=2
           aplay-247   [000]  1436.357343: snd_soc_bias_level_done: card=vscn-2046 component=(none) val=2
    kworker/u8:4-215   [000]  1436.357437: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=1
    kworker/u8:5-231   [000]  1436.357518: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=1
    kworker/u8:5-231   [000]  1436.357523: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=1
    kworker/u8:5-231   [000]  1436.357526: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=2
    kworker/u8:5-231   [000]  1436.357528: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=2
    kworker/u8:4-215   [000]  1436.383217: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=1
    kworker/u8:4-215   [000]  1436.383221: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=2
    kworker/u8:4-215   [000]  1436.383231: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=2
    kworker/u8:5-231   [000]  1436.383468: snd_soc_bias_level_start: card=vscn-2046 component=ff320000.i2s val=3
    kworker/u8:5-231   [000]  1436.383472: snd_soc_bias_level_done: card=vscn-2046 component=ff320000.i2s val=3
    kworker/u8:4-215   [000]  1436.383503: snd_soc_bias_level_start: card=vscn-2046 component=ff560000.codec val=3
    kworker/u8:4-215   [000]  1436.383513: snd_soc_bias_level_done: card=vscn-2046 component=ff560000.codec val=3

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://msgid.link/r/20240306-improve-asoc-trace-events-v1-1-edb252bbeb10@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Luca Ceresoli 2024-03-06 10:30:00 +01:00 committed by Mark Brown
parent 2ca703302a
commit 6ef46a69ec
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 18 additions and 15 deletions
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29
include/trace/events/asoc.h
View File

@ -17,38 +17,41 @@ struct snd_soc_card;
struct snd_soc_dapm_widget;
struct snd_soc_dapm_path;
DECLARE_EVENT_CLASS(snd_soc_card,
DECLARE_EVENT_CLASS(snd_soc_dapm,
TP_PROTO(struct snd_soc_card *card, int val),
TP_PROTO(struct snd_soc_dapm_context *dapm, int val),
TP_ARGS(card, val),
TP_ARGS(dapm, val),
TP_STRUCT__entry(
__string( name, card->name )
__field( int, val )
__string( card_name, dapm->card->name)
__string( comp_name, dapm->component ? dapm->component->name : "(none)")
__field( int, val)
),
TP_fast_assign(
__assign_str(name, card->name);
__assign_str(card_name, dapm->card->name);
__assign_str(comp_name, dapm->component ? dapm->component->name : "(none)");
__entry->val = val;
),
TP_printk("card=%s val=%d", __get_str(name), (int)__entry->val)
TP_printk("card=%s component=%s val=%d",
__get_str(card_name), __get_str(comp_name), (int)__entry->val)
);
DEFINE_EVENT(snd_soc_card, snd_soc_bias_level_start,
DEFINE_EVENT(snd_soc_dapm, snd_soc_bias_level_start,
TP_PROTO(struct snd_soc_card *card, int val),
TP_PROTO(struct snd_soc_dapm_context *dapm, int val),
TP_ARGS(card, val)
TP_ARGS(dapm, val)
);
DEFINE_EVENT(snd_soc_card, snd_soc_bias_level_done,
DEFINE_EVENT(snd_soc_dapm, snd_soc_bias_level_done,
TP_PROTO(struct snd_soc_card *card, int val),
TP_PROTO(struct snd_soc_dapm_context *dapm, int val),
TP_ARGS(card, val)
TP_ARGS(dapm, val)
);

4
sound/soc/soc-dapm.c
View File

@ -725,7 +725,7 @@ static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
struct snd_soc_card *card = dapm->card;
int ret = 0;
trace_snd_soc_bias_level_start(card, level);
trace_snd_soc_bias_level_start(dapm, level);
ret = snd_soc_card_set_bias_level(card, dapm, level);
if (ret != 0)
@ -739,7 +739,7 @@ static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
ret = snd_soc_card_set_bias_level_post(card, dapm, level);
out:
trace_snd_soc_bias_level_done(card, level);
trace_snd_soc_bias_level_done(dapm, level);
return ret;
}