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b3cf257623
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Stephane Eranian b3cf257623 [PATCH] i386: use thread_info flags for debug regs and IO bitmaps 
Use thread info flags to track use of debug registers and IO bitmaps.

 - add TIF_DEBUG to track when debug registers are active
 - add TIF_IO_BITMAP to track when I/O bitmap is used
 - modify __switch_to() to use the new TIF flags

Performance tested on Pentium II, ten runs of LMbench context switch
benchmark (smaller is better:)

	before	after
avg	3.65	3.39
min	3.55	3.33

Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-09 18:47:12 -07:00
..
acpi Revert "ACPI: dock driver" 2006-07-09 08:47:46 -07:00
asm-alpha Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-arm [ARM] 3711/1: AT91 timer update 2006-07-05 17:22:52 +01:00
asm-arm26 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-cris Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-frv Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-generic Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq 2006-07-04 14:00:26 -07:00
asm-h8300 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-i386 [PATCH] i386: use thread_info flags for debug regs and IO bitmaps 2006-07-09 18:47:12 -07:00
asm-ia64 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-m32r Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-m68k Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-m68knommu Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-mips Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-parisc Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-powerpc power: improve inline asm memory constraints 2006-07-08 15:00:28 -07:00
asm-ppc [PATCH] irq-flags: PPC: Use the new IRQF_ constants 2006-07-02 13:58:48 -07:00
asm-s390 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-sh Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-sh64 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-sparc Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-sparc64 [SPARC64]: Fix sparc64 build errors when CONFIG_PCI=n. 2006-07-05 20:18:39 -07:00
asm-um Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-v850 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-x86_64 Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
asm-xtensa Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
keys [PATCH] keys: discard the contents of a key on revocation 2006-06-26 09:58:18 -07:00
linux Merge commit master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 of HEAD 2006-07-09 15:50:41 -07:00
math-emu
media V4L/DVB (4270): Add tda9887-specific tuner configuration 2006-06-30 15:59:32 -03:00
mtd Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
net [NET] gso: Fix up GSO packets with broken checksums 2006-07-08 13:34:56 -07:00
pcmcia Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
rdma Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
rxrpc
scsi Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
sound Merge git://git.infradead.org/hdrinstall-2.6 2006-07-04 12:55:45 -07:00
video Add generic Kbuild files for 'make headers_install' 2006-06-18 12:14:01 +01:00
Kbuild Add generic Kbuild files for 'make headers_install' 2006-06-18 12:14:01 +01:00