x86: Add IRQ_TIME_ACCOUNTING

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This patch adds IRQ_TIME_ACCOUNTING option on x86 and runtime enables it
when TSC is enabled.

This change just enables fine grained irq time accounting, isn't used yet.
Following patches use it for different purposes.

Signed-off-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1286237003-12406-6-git-send-email-venki@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Venkatesh Pallipadi 2010-10-04 17:03:20 -07:00 • committed by Ingo Molnar

parent b52bfee445

commit e82b8e4ea4

3 changed files with 23 additions and 0 deletions

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4

Documentation/kernel-parameters.txt

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11

arch/x86/Kconfig

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8

arch/x86/kernel/tsc.c

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