lkml.org 
[lkml]   [2013]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[ 051/100] ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit
Date
3.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Will Deacon <will.deacon@arm.com>

commit f2fe09b055e2549de41fb107b34c60bac4a1b0cf upstream.

Masked out PMXEVTYPER.NSH means that we can't enable profiling at PL2,
regardless of the settings in the HDCR.

This patch fixes the broken mask.

Reported-by: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/arm/kernel/perf_event_v7.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/kernel/perf_event_v7.c
+++ b/arch/arm/kernel/perf_event_v7.c
@@ -774,7 +774,7 @@ static const unsigned armv7_a7_perf_cach
/*
* PMXEVTYPER: Event selection reg
*/
-#define ARMV7_EVTYPE_MASK 0xc00000ff /* Mask for writable bits */
+#define ARMV7_EVTYPE_MASK 0xc80000ff /* Mask for writable bits */
#define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */

/*



\
 
 \ /
  Last update: 2013-03-13 00:41    [W:0.578 / U:0.528 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site