diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 64449cb..c8c8091 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -189,6 +189,7 @@
 #define XRUN_LOG_CNT	10
 
 struct hwptr_log_entry {
+	unsigned int in_interrupt;
 	unsigned long jiffies;
 	snd_pcm_uframes_t pos;
 	snd_pcm_uframes_t period_size;
@@ -204,7 +205,7 @@
 };
 
 static void xrun_log(struct snd_pcm_substream *substream,
-		     snd_pcm_uframes_t pos)
+		     snd_pcm_uframes_t pos, int in_interrupt)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_pcm_hwptr_log *log = runtime->hwptr_log;
@@ -220,6 +221,7 @@
 			return;
 	}
 	entry = &log->entries[log->idx];
+	entry->in_interrupt = in_interrupt;
 	entry->jiffies = jiffies;
 	entry->pos = pos;
 	entry->period_size = runtime->period_size;
@@ -246,9 +248,11 @@
 		entry = &log->entries[idx];
 		if (entry->period_size == 0)
 			break;
-		snd_printd("hwptr log: %s: j=%lu, pos=%ld/%ld/%ld, "
+		snd_printd("hwptr log: %s: %sj=%lu, pos=%ld/%ld/%ld, "
 			   "hwptr=%ld/%ld\n",
-			   name, entry->jiffies, (unsigned long)entry->pos,
+			   name, entry->in_interrupt ? "[Q] " : "",
+			   entry->jiffies,
+			   (unsigned long)entry->pos,
 			   (unsigned long)entry->period_size,
 			   (unsigned long)entry->buffer_size,
 			   (unsigned long)entry->old_hw_ptr,
@@ -326,7 +330,7 @@
 	}
 	pos -= pos % runtime->min_align;
 	if (xrun_debug(substream, XRUN_DEBUG_LOG))
-		xrun_log(substream, pos);
+		xrun_log(substream, pos, in_interrupt);
 	hw_base = runtime->hw_ptr_base;
 	new_hw_ptr = hw_base + pos;
 	if (in_interrupt) {