x86: Add IRQ_TIME_ACCOUNTING
commit3b7d4d545694e8754f212518d80662f2d03a918d
authorVenkatesh Pallipadi <venki@google.com>
Thu, 10 Feb 2011 09:23:27 +0000 (10 10:23 +0100)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 17 Feb 2011 23:37:26 +0000 (17 15:37 -0800)
treeddcf64dc4517c88a51e28d4098be11d942dd6302
parent5e7ce6ec134635a572ca0457ed2460dfe70337ea
x86: Add IRQ_TIME_ACCOUNTING

Commit: e82b8e4ea4f3dffe6e7939f90e78da675fcc450e upstream

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>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Documentation/kernel-parameters.txt
arch/x86/Kconfig
arch/x86/kernel/tsc.c