This is a note to let you know that I've just added the patch titled
sparc: perf: Remove redundant perf_pmu_{en|dis}able calls
to the 3.14-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:
sparc-perf-remove-redundant-perf_pmu_-en-dis-able-calls.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Tue Mar 24 10:57:37 CET 2015
From: David Ahern <david.ahern@xxxxxxxxxx>
Date: Thu, 19 Mar 2015 16:05:57 -0400
Subject: sparc: perf: Remove redundant perf_pmu_{en|dis}able calls
From: David Ahern <david.ahern@xxxxxxxxxx>
[ Upstream commit 5b0d4b5514bbcce69b516d0742f2cfc84ebd6db3 ]
perf_pmu_disable is called by core perf code before pmu->del and the
enable function is called by core perf code afterwards. No need to
call again within sparc_pmu_del.
Ditto for pmu->add and sparc_pmu_add.
Signed-off-by: David Ahern <david.ahern@xxxxxxxxxx>
Acked-by: Bob Picco <bob.picco@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/sparc/kernel/perf_event.c | 4 ----
1 file changed, 4 deletions(-)
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -1101,7 +1101,6 @@ static void sparc_pmu_del(struct perf_ev
int i;
local_irq_save(flags);
- perf_pmu_disable(event->pmu);
for (i = 0; i < cpuc->n_events; i++) {
if (event == cpuc->event[i]) {
@@ -1127,7 +1126,6 @@ static void sparc_pmu_del(struct perf_ev
}
}
- perf_pmu_enable(event->pmu);
local_irq_restore(flags);
}
@@ -1361,7 +1359,6 @@ static int sparc_pmu_add(struct perf_eve
unsigned long flags;
local_irq_save(flags);
- perf_pmu_disable(event->pmu);
n0 = cpuc->n_events;
if (n0 >= sparc_pmu->max_hw_events)
@@ -1394,7 +1391,6 @@ nocheck:
ret = 0;
out:
- perf_pmu_enable(event->pmu);
local_irq_restore(flags);
return ret;
}
Patches currently in stable-queue which might be from david.ahern@xxxxxxxxxx are
queue-3.14/sparc64-fix-several-bugs-in-memmove.patch
queue-3.14/sparc-perf-make-counting-mode-actually-work.patch
queue-3.14/sparc-touch-nmi-watchdog-when-walking-cpus-and-calling-printk.patch
queue-3.14/sparc-perf-remove-redundant-perf_pmu_-en-dis-able-calls.patch
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