Commit 1a961e78 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

audio: add audio timer trace points 



Track audio timer starts and stops.  Also trace delayed audio timer calls.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180702161524.17268-1-kraxel@redhat.com
parent cabedbc2

audio/audio.c

+25 −3
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include "sysemu/sysemu.h"

#include "qemu/cutils.h"

#include "sysemu/replay.h"

#include "trace.h"



#define AUDIO_CAP "audio"

#include "audio_int.h"
@@ -1129,6 +1130,10 @@ static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) 
/*

 * Timer

 */



static bool audio_timer_running;

static uint64_t audio_timer_last;



static int audio_is_timer_needed (void)

{

    HWVoiceIn *hwi = NULL;
@@ -1148,14 +1153,31 @@ static void audio_reset_timer (AudioState *s) 
    if (audio_is_timer_needed ()) {

        timer_mod_anticipate_ns(s->ts,

            qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks);

        if (!audio_timer_running) {

            audio_timer_running = true;

            audio_timer_last = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);

            trace_audio_timer_start(conf.period.ticks / SCALE_MS);

        }

    else {

    } else {

        timer_del(s->ts);

        if (audio_timer_running) {

            audio_timer_running = false;

            trace_audio_timer_stop();

        }

    }

}



static void audio_timer (void *opaque)

{

    int64_t now, diff;



    now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);

    diff = now - audio_timer_last;

    if (diff > conf.period.ticks * 3 / 2) {

        trace_audio_timer_delayed(diff / SCALE_MS);

    }

    audio_timer_last = now;



    audio_run ("timer");

    audio_reset_timer (opaque);

}

audio/trace-events

+5 −0
Original line number Diff line number Diff line
@@ -15,3 +15,8 @@ alsa_no_frames(int state) "No frames available and ALSA state is %d" 
# audio/ossaudio.c

oss_version(int version) "OSS version = 0x%x"

oss_invalid_available_size(int size, int bufsize) "Invalid available size, size=%d bufsize=%d"



# audio/audio.c

audio_timer_start(int interval) "interval %d ms"

audio_timer_stop(void) ""

audio_timer_delayed(int interval) "interval %d ms"