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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-12 12:29:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-12 12:29:25 -0800 |
| commit | 541d284be0fcca3d3990e6dd89b091aec66849c6 (patch) | |
| tree | 7446f8911a6a59931e341599aacf9a98905ca8ca /arch/arm64/mm/proc.S | |
| parent | fa5fd7c628412ee09ccf5e1d6eebe1dba916b8ee (diff) | |
| parent | 5d7ee87708d4d86fcc32afc9552d05f7625d303d (diff) | |
| download | op-kernel-dev-541d284be0fcca3d3990e6dd89b091aec66849c6.zip op-kernel-dev-541d284be0fcca3d3990e6dd89b091aec66849c6.tar.gz | |
Merge tag 'arm64-perf' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm[64] perf updates from Will Deacon:
"In the past, I have funnelled perf updates through the respective
architecture trees, but now that the arm/arm64 perf driver has been
largely consolidated under drivers/perf/, it makes more sense to send
a separate pull, particularly as I'm listed as maintainer for all the
files involved. I offered the branch to arm-soc, but Arnd suggested
that I just send it to you directly.
So, here is the arm/arm64 perf queue for 4.5. The main features are
described below, but the most useful change is from Drew, which
advertises our architected event mapping in sysfs so that the perf
tool is a lot more user friendly and no longer requires the use of
magic hex constants for profiling common events.
- Support for the CPU PMU in Cortex-A72
- Add sysfs entries to describe the architected events and their
mappings for PMUv{1-3}"
* tag 'arm64-perf' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: perf: add support for Cortex-A72
arm64: perf: add format entry to describe event -> config mapping
ARM: perf: add format entry to describe event -> config mapping
arm64: kernel: enforce pmuserenr_el0 initialization and restore
arm64: perf: Correct Cortex-A53/A57 compatible values
arm64: perf: Add event descriptions
arm64: perf: Convert event enums to #defines
arm: perf: Add event descriptions
arm: perf: Convert event enums to #defines
drivers/perf: kill armpmu_register
Diffstat (limited to 'arch/arm64/mm/proc.S')
| -rw-r--r-- | arch/arm64/mm/proc.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index b6f9053..a3d867e 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -117,6 +117,7 @@ ENTRY(cpu_do_resume) */ ubfx x11, x11, #1, #1 msr oslar_el1, x11 + msr pmuserenr_el0, xzr // Disable PMU access from EL0 mov x0, x12 dsb nsh // Make sure local tlb invalidation completed isb @@ -153,6 +154,7 @@ ENTRY(__cpu_setup) msr cpacr_el1, x0 // Enable FP/ASIMD mov x0, #1 << 12 // Reset mdscr_el1 and disable msr mdscr_el1, x0 // access to the DCC from EL0 + msr pmuserenr_el0, xzr // Disable PMU access from EL0 /* * Memory region attributes for LPAE: * |
