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 <stable@xxxxxxxxxxxxxxx> know about it.
>From 6a558f12dbe85437acbdec5e149ea07b5554eced Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Date: Fri, 26 May 2017 11:17:09 +0300
Subject: perf intel-pt: Clear FUP flag on error
From: Adrian Hunter <adrian.hunter@xxxxxxxxx>
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.
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1495786658-18063-9-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 ++
1 file changed, 2 insertions(+)
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -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 adrian.hunter@xxxxxxxxx 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