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ASoC: Intel: avs: Gather remaining logs on strace_release()

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When user closes the tracer, some logs may still remain in the tail of
the buffer as firmware sends LOG_BUFFER_STATUS notification only when
certain threshold of data is reached. Add whatever is left to already
gathered logs so no information is lost.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221202152841.672536-15-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2022-12-02 16:28:39 +01:00 committed by Mark Brown
parent 5a565ba23a
commit 34d27c7170
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1 changed files with 15 additions and 1 deletions
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16
sound/soc/intel/avs/debugfs.c
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@ -201,11 +201,25 @@ static int strace_open(struct inode *inode, struct file *file)
static int strace_release(struct inode *inode, struct file *file) static int strace_release(struct inode *inode, struct file *file)
{ {
union avs_notify_msg msg = AVS_NOTIFICATION(LOG_BUFFER_STATUS);
struct avs_dev *adev = file->private_data; struct avs_dev *adev = file->private_data;
unsigned long flags; unsigned long resource_mask;
unsigned long flags, i;
u32 num_cores;
resource_mask = adev->logged_resources;
num_cores = adev->hw_cfg.dsp_cores;
spin_lock_irqsave(&adev->trace_lock, flags); spin_lock_irqsave(&adev->trace_lock, flags);
/* Gather any remaining logs. */
for_each_set_bit(i, &resource_mask, num_cores) {
msg.log.core = i;
avs_dsp_op(adev, log_buffer_status, &msg);
}
kfifo_free(&adev->trace_fifo); kfifo_free(&adev->trace_fifo);
spin_unlock_irqrestore(&adev->trace_lock, flags); spin_unlock_irqrestore(&adev->trace_lock, flags);
return 0; return 0;