Patch "perf intel-pt: Fix estimated timestamps for cycle-accurate mode" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

perf intel-pt: Fix estimated timestamps for cycle-accurate mode

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
perf-intel-pt-fix-estimated-timestamps-for-cycle-accurate-mode.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Adrian Hunter <[email protected]>
Date: Wed, 28 Sep 2016 14:41:35 +0300
Subject: perf intel-pt: Fix estimated timestamps for cycle-accurate mode

From: Adrian Hunter <[email protected]>

commit 51ee6481fa8e879cc942bcc1b0af713e158b7a98 upstream.

In cycle-accurate mode, timestamps can be calculated from CYC packets. The decoder also estimates timestamps based on the number of instructions since the last timestamp. For that to work in cycle-accurate mode, the instruction count needs to be reset to zero when a timestamp is calculated from a CYC packet, but that wasn't happening, so fix it.

---
 tools/perf/util/intel-pt-decoder/intel-pt-decoder.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -1323,6 +1323,8 @@ static void intel_pt_calc_cyc_timestamp(
 			     timestamp, decoder->timestamp);
 	else
 		decoder->timestamp = timestamp;
+
+	decoder->timestamp_insn_cnt = 0;
 }
 
 /* Walk PSB+ packets when already in sync. */

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/mmc-sdhci-cast-unsigned-int-to-unsigned-long-long-to-avoid-unexpeted-error.patch queue-4.4/perf-intel-pt-fix-estimated-timestamps-for-cycle-accurate-mode.patch queue-4.4/perf-intel-pt-fix-mtc-timestamp-calculation-for-large-mtc-periods.patch queue-4.4/perf-intel-pt-fix-snapshot-overlap-detection-decoder-errors.patch