Venki Pallipadi bde6f5f59c x86: voluntary leave_mm before entering ACPI C3 ... Aviod TLB flush IPIs during C3 states by voluntary leave_mm() before entering C3. The performance impact of TLB flush on C3 should not be significant with respect to C3 wakeup latency. Also, CPUs tend to flush TLB in hardware while in C3 anyways. On a 8 logical CPU system, running make -j2, the number of tlbflush IPIs goes down from 40 per second to ~ 0. Total number of interrupts during the run of this workload was ~1200 per second, which makes it ~3% savings in wakeups. There was no measurable performance or power impact however. [ akpm@linux-foundation.org: symbol export fixes. ] Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2008-01-30 13:32:01 +01:00
..
sn	[IA64] Update Altix BTE error return status patch	2008-01-03 13:18:58 -08:00
a.out.h
acpi-ext.h
acpi.h	x86: voluntary leave_mm before entering ACPI C3	2008-01-30 13:32:01 +01:00
agp.h
asmmacro.h	[IA64] remove per-cpu ia64_phys_stacked_size_p8	2007-02-06 15:04:18 -08:00
atomic.h	[IA64] Use atomic64_read to read an atomic64_t.	2007-08-13 10:21:04 -07:00
auxvec.h
bitops.h	IA64: Slim down __clear_bit_unlock	2007-12-18 16:22:46 -08:00
break.h	[IA64] enable trap code on slot 1	2006-12-12 12:00:55 -08:00
bug.h
bugs.h
byteorder.h
cache.h
cacheflush.h	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
checksum.h	[PATCH] fix prototype of csum_ipv6_magic() (ia64)	2007-01-23 11:09:49 -08:00
compat.h	Introduce compat_u64 and compat_s64 types	2007-07-16 09:05:48 -07:00
cpu.h
cputime.h
current.h
cyclone.h
delay.h
device.h	ACPI: Change ACPI to use dev_archdata instead of firmware_data	2006-12-01 14:52:01 -08:00
div64.h
dma-mapping.h	IA64: sg chaining support	2007-10-16 11:27:26 +02:00
dma.h	[IA64] swiotlb bug fixes	2007-02-05 18:46:40 -08:00
dmi.h
elf.h	increase AT_VECTOR_SIZE to terminate saved_auxv properly	2007-10-17 08:43:00 -07:00
emergency-restart.h
errno.h
esi.h	[IA64] remove bogus prototype ia64_esi_init()	2007-02-05 14:14:29 -08:00
fb.h	fbdev: detect primary display device	2007-07-17 10:23:11 -07:00
fcntl.h
fpswa.h
fpu.h
futex.h	[PATCH] mm: pagefault_{disable,enable}()	2006-12-07 08:39:21 -08:00
gcc_intrin.h	remove __attribute_used__	2008-01-28 23:21:18 +01:00
hardirq.h
hpsim.h	[IA64] Cleanup HPSIM code (was: Re: Enable early console for Ski simulator)	2007-09-01 02:52:25 -07:00
hw_irq.h	[IA64] Two trivial spelling fixes	2007-12-18 17:02:21 -08:00
ia32.h	[IA64] rename partial_page	2007-07-25 12:56:39 -07:00
ia64regs.h
ide.h	ide: add CONFIG_IDE_ARCH_OBSOLETE_INIT	2007-10-20 00:32:32 +02:00
intel_intrin.h	IA64: Slim down __clear_bit_unlock	2007-12-18 16:22:46 -08:00
intrinsics.h
io.h	Remove dma_cache_(wback|inv|wback_inv) functions	2007-10-17 08:42:57 -07:00
ioctl.h
ioctls.h	[IA64] arbitary speed tty ioctl support	2007-07-13 16:04:12 -07:00
iosapic.h	[IA64] iosapic cleanup	2007-12-07 16:11:12 -08:00
ipcbuf.h
irq.h	take declarations of enable_irq() et.al. to linux/interrupt.h	2007-07-22 11:44:00 -07:00
irq_regs.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
Kbuild	[PATCH] cleanup asm/setup.h userspace visibility	2006-12-07 08:39:46 -08:00
kdebug.h	x86: optimize page faults like all other achitectures and kill notifier cruft	2007-10-16 09:42:50 -07:00
kexec.h	kdump/kexec: calculate note size at compile time	2007-05-08 11:15:07 -07:00
kmap_types.h
kprobes.h	kprobes: support kretprobe blacklist	2007-10-16 09:43:10 -07:00
kregs.h	[IA64] relax per-cpu TLB requirement to DTC	2007-02-06 15:04:48 -08:00
libata-portmap.h	ATA convert GSI to irq on ia64	2007-02-15 18:04:53 -05:00
linkage.h
local.h	local_t: ia64 extension	2007-05-08 11:15:20 -07:00
machvec.h	[IA64] SN2 needs platform specific irq_to_vector() function.	2007-08-13 10:31:26 -07:00
machvec_dig.h
machvec_hpsim.h
machvec_hpzx1.h
machvec_hpzx1_swiotlb.h
machvec_init.h	[IA64] SN2 needs platform specific irq_to_vector() function.	2007-08-13 10:31:26 -07:00
machvec_sn2.h	[IA64] SN2 needs platform specific irq_to_vector() function.	2007-08-13 10:31:26 -07:00
mc146818rtc.h
mca.h	[IA64] Fix kernel panic in kdump on INIT	2007-10-12 15:24:06 -07:00
mca_asm.h	[IA64] Make gp value point to Region 5 in mca handler	2006-09-26 14:13:03 -07:00
meminit.h	Use extended crashkernel command line on ia64	2007-10-19 11:53:50 -07:00
mman.h	[PATCH] IA64,sparc: local DoS with corrupted ELFs	2006-09-08 08:40:46 -07:00
mmu.h
mmu_context.h	[PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction	2007-05-02 19:27:14 +02:00
mmzone.h
module.h	[PATCH] Move compiler check for modules to ia64 only	2006-09-26 10:52:37 +02:00
msgbuf.h
mutex.h
namei.h
nodedata.h	[PATCH] pgdat allocation and update for ia64 of memory hotplug: update pgdat address array	2006-06-27 17:32:37 -07:00
numa.h	Add vmcoreinfo	2007-10-17 08:42:54 -07:00
page.h	Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated	2007-07-17 10:22:59 -07:00
pal.h	[IA64] Update printing of feature set bits	2007-11-09 13:05:30 -08:00
param.h
parport.h
patch.h	[IA64] remove per-cpu ia64_phys_stacked_size_p8	2007-02-06 15:04:18 -08:00
pci.h	[IA64] Un-break ia64 build	2007-07-12 16:04:39 -07:00
percpu.h	[IA64] fix typo in per_cpu_offset	2007-10-29 11:21:45 -07:00
perfmon.h
perfmon_default_smpl.h
pgalloc.h	[IA64] Quicklist support for IA64	2007-05-11 09:40:00 -07:00
pgtable.h	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
poll.h	Consolidate asm/poll.h	2007-05-11 08:29:34 -07:00
posix_types.h	[PATCH] FD_ZERO build fix	2007-01-11 18:18:22 -08:00
processor.h	[IA64] rename partial_page	2007-07-25 12:56:39 -07:00
ptrace.h	[PATCH] Add regs_return_value() helper	2006-10-02 07:57:16 -07:00
ptrace_offsets.h
resource.h	[IA64] Remove stack hard limit on ia64	2007-03-06 14:48:19 -08:00
rse.h
rwsem.h	[IA64] Prevent people from directly including <asm/rwsem.h>.	2007-07-20 11:27:11 -07:00
sal.h	[IA64] abstract SAL_CALL wrapper to allow other firmware entry points	2007-10-12 15:11:22 -07:00
scatterlist.h	Add CONFIG_DEBUG_SG sg validation	2007-10-22 21:20:03 +02:00
sections.h	[IA64] remove per-cpu ia64_phys_stacked_size_p8	2007-02-06 15:04:18 -08:00
segment.h
semaphore.h	kill DECLARE_MUTEX_LOCKED	2007-10-17 08:42:47 -07:00
sembuf.h
serial.h
setup.h	[PATCH] ia64: 2048-byte command line	2007-02-12 09:48:39 -08:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h	[PATCH] irq-flags: IA64: Use the new IRQF_ constants	2006-07-02 13:58:47 -07:00
smp.h	[IA64] /proc/cpuinfo "physical id" field cleanups	2007-10-29 11:14:54 -07:00
socket.h	[NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support	2007-04-25 22:24:21 -07:00
sockios.h	[NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution	2007-04-25 22:24:04 -07:00
sparsemem.h
spinlock.h	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
spinlock_types.h
stat.h
statfs.h
string.h
suspend.h
system.h	increase AT_VECTOR_SIZE to terminate saved_auxv properly	2007-10-17 08:43:00 -07:00
termbits.h	[IA64] arbitary speed tty ioctl support	2007-07-13 16:04:12 -07:00
termios.h	[IA64] arbitary speed tty ioctl support	2007-07-13 16:04:12 -07:00
thread_info.h	remove unused TIF_NOTIFY_RESUME flag	2007-07-31 15:39:38 -07:00
timex.h
tlb.h
tlbflush.h	[IA64] make flush_tlb_kernel_range() an inline function	2007-12-19 12:30:30 -08:00
topology.h	Convert cpu_sibling_map to be a per cpu variable	2007-10-16 09:42:50 -07:00
types.h
uaccess.h	[IA64] don't double >> PAGE_SHIFT pointer for /dev/kmem access	2006-10-26 14:57:06 -07:00
ucontext.h
unaligned.h
uncached.h
unistd.h	[IA64] fallocate system call	2007-07-19 13:48:00 -07:00
unwind.h	[IA64] Remove sparse warning from unwind code	2007-03-08 10:28:48 -08:00
user.h
ustack.h	arch: personality independent stack top	2007-07-19 10:04:45 -07:00
vga.h
xor.h