ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit
authorWill Deacon <will.deacon@arm.com>
Thu, 28 Feb 2013 16:49:11 +0000 (17:49 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 3 Mar 2013 22:54:17 +0000 (22:54 +0000)
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.

Cc: <stable@vger.kernel.org>
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>
arch/arm/kernel/perf_event_v7.c

index 8c79a9e70b83d1dd31afdca93addae57c7c9c0cb..039cffb053a7ec017a552013fc6eff5c17ca1d50 100644 (file)
@@ -774,7 +774,7 @@ static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
 /*
  * 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 */
 
 /*