ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit

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>

diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c
index 4fbc757d9cffd6daebd6dd070047d2cfe1ff5e06..89ede246bc3f51fe7e04f338060f25ec5d9761b9 100644 (file)
--- 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_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 */
 
 /*