1 files changed, 0 insertions, 133 deletions

diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index d942f118d32c..85168d87b2d7 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -38,8 +38,6 @@ struct cs_etm_recording {
 	struct auxtrace_record	itr;
 	struct perf_pmu		*cs_etm_pmu;
 	struct evlist		*evlist;
-	int			wrapped_cnt;
-	bool			*wrapped;
 	bool			snapshot_mode;
 	size_t			snapshot_size;
 };
@@ -734,135 +732,6 @@ static int cs_etm_info_fill(struct auxtrace_record *itr,
 	return 0;
 }
 
-static int cs_etm_alloc_wrapped_array(struct cs_etm_recording *ptr, int idx)
-{
-	bool *wrapped;
-	int cnt = ptr->wrapped_cnt;
-
-	/* Make @ptr->wrapped as big as @idx */
-	while (cnt <= idx)
-		cnt++;
-
-	/*
-	 * Free'ed in cs_etm_recording_free().  Using realloc() to avoid
-	 * cross compilation problems where the host's system supports
-	 * reallocarray() but not the target.
-	 */
-	wrapped = realloc(ptr->wrapped, cnt * sizeof(bool));
-	if (!wrapped)
-		return -ENOMEM;
-
-	wrapped[cnt - 1] = false;
-	ptr->wrapped_cnt = cnt;
-	ptr->wrapped = wrapped;
-
-	return 0;
-}
-
-static bool cs_etm_buffer_has_wrapped(unsigned char *buffer,
-				      size_t buffer_size, u64 head)
-{
-	u64 i, watermark;
-	u64 *buf = (u64 *)buffer;
-	size_t buf_size = buffer_size;
-
-	/*
-	 * We want to look the very last 512 byte (chosen arbitrarily) in
-	 * the ring buffer.
-	 */
-	watermark = buf_size - 512;
-
-	/*
-	 * @head is continuously increasing - if its value is equal or greater
-	 * than the size of the ring buffer, it has wrapped around.
-	 */
-	if (head >= buffer_size)
-		return true;
-
-	/*
-	 * The value of @head is somewhere within the size of the ring buffer.
-	 * This can be that there hasn't been enough data to fill the ring
-	 * buffer yet or the trace time was so long that @head has numerically
-	 * wrapped around.  To find we need to check if we have data at the very
-	 * end of the ring buffer.  We can reliably do this because mmap'ed
-	 * pages are zeroed out and there is a fresh mapping with every new
-	 * session.
-	 */
-
-	/* @head is less than 512 byte from the end of the ring buffer */
-	if (head > watermark)
-		watermark = head;
-
-	/*
-	 * Speed things up by using 64 bit transactions (see "u64 *buf" above)
-	 */
-	watermark >>= 3;
-	buf_size >>= 3;
-
-	/*
-	 * If we find trace data at the end of the ring buffer, @head has
-	 * been there and has numerically wrapped around at least once.
-	 */
-	for (i = watermark; i < buf_size; i++)
-		if (buf[i])
-			return true;
-
-	return false;
-}
-
-static int cs_etm_find_snapshot(struct auxtrace_record *itr,
-				int idx, struct auxtrace_mmap *mm,
-				unsigned char *data,
-				u64 *head, u64 *old)
-{
-	int err;
-	bool wrapped;
-	struct cs_etm_recording *ptr =
-			container_of(itr, struct cs_etm_recording, itr);
-
-	/*
-	 * Allocate memory to keep track of wrapping if this is the first
-	 * time we deal with this *mm.
-	 */
-	if (idx >= ptr->wrapped_cnt) {
-		err = cs_etm_alloc_wrapped_array(ptr, idx);
-		if (err)
-			return err;
-	}
-
-	/*
-	 * Check to see if *head has wrapped around.  If it hasn't only the
-	 * amount of data between *head and *old is snapshot'ed to avoid
-	 * bloating the perf.data file with zeros.  But as soon as *head has
-	 * wrapped around the entire size of the AUX ring buffer it taken.
-	 */
-	wrapped = ptr->wrapped[idx];
-	if (!wrapped && cs_etm_buffer_has_wrapped(data, mm->len, *head)) {
-		wrapped = true;
-		ptr->wrapped[idx] = true;
-	}
-
-	pr_debug3("%s: mmap index %d old head %zu new head %zu size %zu\n",
-		  __func__, idx, (size_t)*old, (size_t)*head, mm->len);
-
-	/* No wrap has occurred, we can just use *head and *old. */
-	if (!wrapped)
-		return 0;
-
-	/*
-	 * *head has wrapped around - adjust *head and *old to pickup the
-	 * entire content of the AUX buffer.
-	 */
-	if (*head >= mm->len) {
-		*old = *head - mm->len;
-	} else {
-		*head += mm->len;
-		*old = *head - mm->len;
-	}
-
-	return 0;
-}
-
 static int cs_etm_snapshot_start(struct auxtrace_record *itr)
 {
 	struct cs_etm_recording *ptr =
@@ -900,7 +769,6 @@ static void cs_etm_recording_free(struct auxtrace_record *itr)
 	struct cs_etm_recording *ptr =
 			container_of(itr, struct cs_etm_recording, itr);
 
-	zfree(&ptr->wrapped);
 	free(ptr);
 }
 
@@ -928,7 +796,6 @@ struct auxtrace_record *cs_etm_record_init(int *err)
 	ptr->itr.recording_options	= cs_etm_recording_options;
 	ptr->itr.info_priv_size		= cs_etm_info_priv_size;
 	ptr->itr.info_fill		= cs_etm_info_fill;
-	ptr->itr.find_snapshot		= cs_etm_find_snapshot;
 	ptr->itr.snapshot_start		= cs_etm_snapshot_start;
 	ptr->itr.snapshot_finish	= cs_etm_snapshot_finish;
 	ptr->itr.reference		= cs_etm_reference;