| From | Greg Kroah-Hartman <> | Subject | [ 051/100] ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit | Date | Tue, 12 Mar 2013 15:31:36 -0700 |
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3.8-stable review patch. If anyone has any objections, please let me know.
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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 */ /*
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