4.4-stable patches

added patches:
	perf-stat-zero-all-the-ena-and-run-array-slot-stats-for-interval-mode.patch

diff --git a/queue-4.4/perf-stat-zero-all-the-ena-and-run-array-slot-stats-for-interval-mode.patch b/queue-4.4/perf-stat-zero-all-the-ena-and-run-array-slot-stats-for-interval-mode.patch
new file mode 100644 (file)
index 0000000..7ea1e52
--- /dev/null
+++ b/queue-4.4/perf-stat-zero-all-the-ena-and-run-array-slot-stats-for-interval-mode.patch
@@ -0,0 +1,49 @@
+From 0e0bf1ea1147fcf74eab19c2d3c853cc3740a72f Mon Sep 17 00:00:00 2001
+From: Jin Yao <yao.jin@linux.intel.com>
+Date: Thu, 9 Apr 2020 15:07:55 +0800
+Subject: perf stat: Zero all the 'ena' and 'run' array slot stats for interval mode
+
+From: Jin Yao <yao.jin@linux.intel.com>
+
+commit 0e0bf1ea1147fcf74eab19c2d3c853cc3740a72f upstream.
+
+As the code comments in perf_stat_process_counter() say, we calculate
+counter's data every interval, and the display code shows ps->res_stats
+avg value. We need to zero the stats for interval mode.
+
+But the current code only zeros the res_stats[0], it doesn't zero the
+res_stats[1] and res_stats[2], which are for ena and run of counter.
+
+This patch zeros the whole res_stats[] for interval mode.
+
+Fixes: 51fd2df1e882 ("perf stat: Fix interval output values")
+Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Andi Kleen <ak@linux.intel.com>
+Cc: Jin Yao <yao.jin@intel.com>
+Cc: Jiri Olsa <jolsa@kernel.org>
+Cc: Kan Liang <kan.liang@linux.intel.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Link: http://lore.kernel.org/lkml/20200409070755.17261-1-yao.jin@linux.intel.com
+Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ tools/perf/util/stat.c |    6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+--- a/tools/perf/util/stat.c
++++ b/tools/perf/util/stat.c
+@@ -318,8 +318,10 @@ int perf_stat_process_counter(struct per
+        * interval mode, otherwise overall avg running
+        * averages will be shown for each interval.
+        */
+-      if (config->interval)
+-              init_stats(ps->res_stats);
++      if (config->interval) {
++              for (i = 0; i < 3; i++)
++                      init_stats(&ps->res_stats[i]);
++      }
+ 
+       if (counter->per_pkg)
+               zero_per_pkg(counter);

diff --git a/queue-4.4/series b/queue-4.4/series
index 079a452b75743d15bedc6d36669996450ab97daa..63805f378c4746e0e3c79ec22306feb7813fb472 100644 (file)
--- a/queue-4.4/series
+++ b/queue-4.4/series
@@ -32,3 +32,4 @@ revert-usb-xhci-plat-set-pm-runtime-as-active-on-res.patch
 revert-usb-ohci-platform-fix-a-warning-when-hibernat.patch
 usb-gadget-udc-atmel-fix-uninitialized-read-in-debug.patch
 staging-comedi-verify-array-index-is-correct-before-.patch
+perf-stat-zero-all-the-ena-and-run-array-slot-stats-for-interval-mode.patch