OpenCloudOS-Kernel/include
Jeremy Fitzhardinge edd6bcd820 x86: pud_clear: only reload cr3 if necessary
Rather than unconditionally reloading cr3, only do so if the pud we're
updating is within the active pgd.

This eliminates TLB flushes most of the time.  The
performance-critical uses of pud_clear are during execve and exit, but
in those cases cr3 is referring to some other pagetable.  The only
other use of pud_clear is during a large (1Gbyte+) munmap, and those
are sufficiently rare that a couple of cr3 reloads won't hurt.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04 16:48:02 +01:00
..
acpi ACPI: Separate invocations of _GTS and _BFS from _PTS and _WAK 2008-02-01 18:30:56 -05:00
asm-alpha [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-arm USB: at91_udc uses generic GPIO calls; minor cleanup 2008-02-01 14:35:01 -08:00
asm-avr32 [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-blackfin [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-cris [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-frv [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-generic asm-generic/tlb.h: remove <linux/quicklist.h> 2008-02-04 16:48:00 +01:00
asm-h8300 [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-ia64 [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-m32r [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-m68k [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-m68knommu m68knommu: remove unused CONFIG_DISKtel symbol 2008-02-01 21:00:01 +11:00
asm-mips au1xxx-ide: use hwif->dev 2008-02-01 23:09:31 +01:00
asm-parisc [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-powerpc [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-ppc [PPC] Remove 85xx from arch/ppc 2008-01-28 08:33:10 -06:00
asm-s390 [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-sh [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-sparc [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-sparc64 [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-um git-x86: unbreak UML 2008-01-30 13:32:38 +01:00
asm-v850 [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
asm-x86 x86: pud_clear: only reload cr3 if necessary 2008-02-04 16:48:02 +01:00
asm-xtensa [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
crypto [CRYPTO] api: Include sched.h for cond_resched in scatterwalk.h 2008-01-11 08:16:59 +11:00
keys
linux ide: move check_dma_crc() to ide-dma.c 2008-02-02 19:56:47 +01:00
math-emu
media i2c: Constify client address data 2008-01-27 18:14:46 +01:00
mtd
net [NETNS]: Lookup in FIB semantic hashes taking into account the namespace. 2008-01-31 19:28:41 -08:00
pcmcia [AVR32] pcmcia ioaddr_t should be 32 bits on AVR32 2007-11-15 13:47:19 +01:00
rdma RDMA/cma: add support for rdma_migrate_id() 2008-01-25 14:15:32 -08:00
rxrpc
scsi [SCSI] scsi_debug: add XDWRITEREAD_10 support 2008-01-30 13:14:25 -06:00
sound [ALSA] version 1.0.16rc2 2008-01-31 17:40:18 +01:00
video
xen x86: page.h: make pte_t a union to always include 2008-01-30 13:32:57 +01:00
Kbuild