forked from Minki/linux
be4e31dab0
When working for devices which support configurable modes for its data transmission or which consists of several components, developers are likely to use rules of parameters of PCM substream. However, there's no infrastructure to assist their work. In old days, ALSA PCM core got a local 'RULES_DEBUG' macro to debug refinement of parameters for PCM substream. Although this is merely a makeshift. With some modifications, we get the infrastructure. This commit is for the purpose. Refinement of mask/interval type of PCM parameters is probed as tracepoint events as 'hw_mask_param' and 'hw_interval_param' on existent 'snd_pcm' subsystem. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
143 lines
4.5 KiB
C
143 lines
4.5 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM snd_pcm
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#if !defined(_PCM_PARAMS_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _PCM_PARAMS_TRACE_H
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#include <linux/tracepoint.h>
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#define HW_PARAM_ENTRY(param) {SNDRV_PCM_HW_PARAM_##param, #param}
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#define hw_param_labels \
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HW_PARAM_ENTRY(ACCESS), \
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HW_PARAM_ENTRY(FORMAT), \
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HW_PARAM_ENTRY(SUBFORMAT), \
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HW_PARAM_ENTRY(SAMPLE_BITS), \
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HW_PARAM_ENTRY(FRAME_BITS), \
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HW_PARAM_ENTRY(CHANNELS), \
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HW_PARAM_ENTRY(RATE), \
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HW_PARAM_ENTRY(PERIOD_TIME), \
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HW_PARAM_ENTRY(PERIOD_SIZE), \
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HW_PARAM_ENTRY(PERIOD_BYTES), \
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HW_PARAM_ENTRY(PERIODS), \
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HW_PARAM_ENTRY(BUFFER_TIME), \
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HW_PARAM_ENTRY(BUFFER_SIZE), \
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HW_PARAM_ENTRY(BUFFER_BYTES), \
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HW_PARAM_ENTRY(TICK_TIME)
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TRACE_EVENT(hw_mask_param,
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TP_PROTO(struct snd_pcm_substream *substream, snd_pcm_hw_param_t type, int index, const struct snd_mask *prev, const struct snd_mask *curr),
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TP_ARGS(substream, type, index, prev, curr),
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TP_STRUCT__entry(
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__field(int, card)
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__field(int, device)
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__field(int, subdevice)
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__field(int, direction)
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__field(snd_pcm_hw_param_t, type)
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__field(int, index)
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__field(int, total)
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__array(__u32, prev_bits, 8)
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__array(__u32, curr_bits, 8)
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),
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TP_fast_assign(
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__entry->card = substream->pcm->card->number;
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__entry->device = substream->pcm->device;
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__entry->subdevice = substream->number;
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__entry->direction = substream->stream;
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__entry->type = type;
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__entry->index = index;
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__entry->total = substream->runtime->hw_constraints.rules_num;
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memcpy(__entry->prev_bits, prev->bits, sizeof(__u32) * 8);
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memcpy(__entry->curr_bits, curr->bits, sizeof(__u32) * 8);
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),
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TP_printk("%d,%d,%d,%d %03d/%03d %s %08x%08x%08x%08x %08x%08x%08x%08x",
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__entry->card,
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__entry->device,
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__entry->subdevice,
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__entry->direction,
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__entry->index,
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__entry->total,
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__print_symbolic(__entry->type, hw_param_labels),
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__entry->prev_bits[3], __entry->prev_bits[2],
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__entry->prev_bits[1], __entry->prev_bits[0],
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__entry->curr_bits[3], __entry->curr_bits[2],
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__entry->curr_bits[1], __entry->curr_bits[0]
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)
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);
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TRACE_EVENT(hw_interval_param,
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TP_PROTO(struct snd_pcm_substream *substream, snd_pcm_hw_param_t type, int index, const struct snd_interval *prev, const struct snd_interval *curr),
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TP_ARGS(substream, type, index, prev, curr),
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TP_STRUCT__entry(
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__field(int, card)
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__field(int, device)
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__field(int, subdevice)
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__field(int, direction)
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__field(snd_pcm_hw_param_t, type)
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__field(int, index)
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__field(int, total)
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__field(unsigned int, prev_min)
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__field(unsigned int, prev_max)
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__field(unsigned int, prev_openmin)
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__field(unsigned int, prev_openmax)
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__field(unsigned int, prev_integer)
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__field(unsigned int, prev_empty)
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__field(unsigned int, curr_min)
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__field(unsigned int, curr_max)
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__field(unsigned int, curr_openmin)
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__field(unsigned int, curr_openmax)
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__field(unsigned int, curr_integer)
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__field(unsigned int, curr_empty)
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),
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TP_fast_assign(
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__entry->card = substream->pcm->card->number;
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__entry->device = substream->pcm->device;
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__entry->subdevice = substream->number;
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__entry->direction = substream->stream;
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__entry->type = type;
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__entry->index = index;
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__entry->total = substream->runtime->hw_constraints.rules_num;
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__entry->prev_min = prev->min;
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__entry->prev_max = prev->max;
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__entry->prev_openmin = prev->openmin;
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__entry->prev_openmax = prev->openmax;
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__entry->prev_integer = prev->integer;
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__entry->prev_empty = prev->empty;
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__entry->curr_min = curr->min;
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__entry->curr_max = curr->max;
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__entry->curr_openmin = curr->openmin;
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__entry->curr_openmax = curr->openmax;
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__entry->curr_integer = curr->integer;
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__entry->curr_empty = curr->empty;
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),
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TP_printk("%d,%d,%d,%d %03d/%03d %s %d %d %s%u %u%s %d %d %s%u %u%s",
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__entry->card,
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__entry->device,
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__entry->subdevice,
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__entry->direction,
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__entry->index,
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__entry->total,
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__print_symbolic(__entry->type, hw_param_labels),
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__entry->prev_empty,
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__entry->prev_integer,
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__entry->prev_openmin ? "(" : "[",
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__entry->prev_min,
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__entry->prev_max,
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__entry->prev_openmax ? ")" : "]",
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__entry->curr_empty,
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__entry->curr_integer,
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__entry->curr_openmin ? "(" : "[",
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__entry->curr_min,
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__entry->curr_max,
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__entry->curr_openmax ? ")" : "]"
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)
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);
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#endif /* _PCM_PARAMS_TRACE_H */
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/* This part must be outside protection */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE pcm_param_trace
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#include <trace/define_trace.h>
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