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Patch "perf intel-pt: Clear FUP flag on error" has been added to the 4.12-stable tree

PATCH [email protected] 1 participant 1 message Jul 22, 2017

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

perf intel-pt: Clear FUP flag on error

to the 4.12-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-clear-fup-flag-on-error.patch
and it can be found in the queue-4.12 subdirectory.

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

Quoted 1 line

From 6a558f12dbe85437acbdec5e149ea07b5554eced Mon Sep 17 00:00:00 2001

From: Adrian Hunter <[email protected]>
Date: Fri, 26 May 2017 11:17:09 +0300
Subject: perf intel-pt: Clear FUP flag on error

From: Adrian Hunter <[email protected]>

commit 6a558f12dbe85437acbdec5e149ea07b5554eced upstream.

Sometimes a FUP packet is associated with a TSX transaction and a flag is set to indicate that. Ensure that flag is cleared on any error condition because at that point the decoder can no longer assume it is correct.

---
 tools/perf/util/intel-pt-decoder/intel-pt-decoder.c |    2 ++
 1 file changed, 2 insertions(+)
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +2 -0
@@ -1962,6 +1962,8 @@ static int intel_pt_sync_ip(struct intel
 {
 	int err;
 
+	decoder->set_fup_tx_flags = false;
+
 	intel_pt_log("Scanning for full IP\n");
 	err = intel_pt_walk_to_ip(decoder);
 	if (err)

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

queue-4.12/perf-intel-pt-ensure-ip-is-zero-when-state-is-intel_pt_state_no_ip.patch queue-4.12/perf-intel-pt-ensure-never-to-set-last_ip-when-packet-count-is-zero.patch queue-4.12/perf-intel-pt-use-fup-always-when-scanning-for-an-ip.patch queue-4.12/perf-intel-pt-fix-last_ip-usage.patch queue-4.12/perf-intel-pt-move-decoder-error-setting-into-one-condition.patch queue-4.12/perf-intel-pt-clear-fup-flag-on-error.patch queue-4.12/perf-intel-pt-improve-sample-timestamp.patch queue-4.12/perf-intel-pt-fix-missing-stack-clear.patch