linux/arch/x86_64
Andi Kleen 495ab9c045 [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status
During some profiling I noticed that default_idle causes a lot of
memory traffic. I think that is caused by the atomic operations
to clear/set the polling flag in thread_info. There is actually
no reason to make this atomic - only the idle thread does it
to itself, other CPUs only read it. So I moved it into ti->status.

Converted i386/x86-64/ia64 for now because that was the easiest
way to fix ACPI which also manipulates these flags in its idle
function.

Cc: Nick Piggin <npiggin@novell.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26 10:48:21 -07:00
..
boot [PATCH] i386/x86-64: Fix isoimage when syslinux is in /usr/share 2006-06-26 10:48:19 -07:00
crypto [CRYPTO] aes: Fixed array boundary violation 2006-03-21 20:14:10 +11:00
ia32 [PATCH] x86_64: reliable stack trace support (x86-64 syscall 2006-06-26 10:48:17 -07:00
kernel [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status 2006-06-26 10:48:21 -07:00
lib [PATCH] x86_64: remove dead do_softirq_thunk 2006-03-25 09:10:53 -08:00
mm [PATCH] x86_64: miscellaneous mm/init.c fixes 2006-06-26 10:48:20 -07:00
oprofile [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu 2005-11-07 07:53:35 -08:00
pci [PATCH] x86_64: Clean and enhance up K8 northbridge access code 2006-06-26 10:48:15 -07:00
defconfig [PATCH] x86_64: Update defconfig 2006-06-26 10:48:14 -07:00
Kconfig [PATCH] x86_64: Calgary IOMMU - Calgary specific bits 2006-06-26 10:48:19 -07:00
Kconfig.debug [PATCH] x86_64: Rename IOMMU option, fix help and mark option embedded. 2006-06-26 10:48:17 -07:00
Makefile [PATCH] x86_64: fix CONFIG_REORDER 2006-04-09 11:53:53 -07:00