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arm64: enable HAVE_IRQ_TIME_ACCOUNTING

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arm64 relies on the arm_arch_timer for sched_clock, so we can select
HAVE_IRQ_TIME_ACCOUNTING and have the core sched-clock code enable the
feature at runtime based on the rate.

Reported-by: Mario Smarduch <m.smarduch@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2015-11-23 15:12:59 +00:00
parent b9b7aebb42
commit 24da208db3
2 changed files with 2 additions and 1 deletions
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2
Documentation/features/time/irq-time-acct/arch-support.txt
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@ -9,7 +9,7 @@
| alpha: | .. | | alpha: | .. |
| arc: | TODO | | arc: | TODO |
| arm: | ok | | arm: | ok |
| arm64: | .. | | arm64: | ok |
| avr32: | TODO | | avr32: | TODO |
| blackfin: | TODO | | blackfin: | TODO |
| c6x: | TODO | | c6x: | TODO |

1
arch/arm64/Kconfig
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@ -70,6 +70,7 @@ config ARM64
select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_GENERIC_DMA_COHERENT select HAVE_GENERIC_DMA_COHERENT
select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_MEMBLOCK select HAVE_MEMBLOCK
select HAVE_PATA_PLATFORM select HAVE_PATA_PLATFORM
select HAVE_PERF_EVENTS select HAVE_PERF_EVENTS