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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
..
alpha Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2006-07-03 21:26:12 -07:00
arm [ARM] 3711/1: AT91 timer update 2006-07-05 17:22:52 +01:00
arm26 [PATCH] irq-flags: ARM26: Use the new IRQF_ constants 2006-07-02 13:58:46 -07:00
cris [PATCH] irq-flags: CRIS: Use the new IRQF_ constants 2006-07-02 13:58:46 -07:00
frv kbuild: introduce utsrelease.h 2006-07-03 23:30:54 +02:00
h8300 [PATCH] irq-flags: H8300: Use the new IRQF_ constants 2006-07-02 13:58:47 -07:00
i386 [PATCH] i386: use thread_info flags for debug regs and IO bitmaps 2006-07-09 18:47:12 -07:00
ia64 [PATCH] Fix copying of pgdat array on each node for ia64 memory hotplug 2006-07-04 10:24:57 -07:00
m32r [PATCH] irq-flags: M32R: Use the new IRQF_ constants 2006-07-02 13:58:47 -07:00
m68k [PATCH] irq-flags: M68K: Use the new IRQF_ constants 2006-07-02 13:58:47 -07:00
m68knommu [PATCH] irq-flags: M68KNOMMU: Use the new IRQF_ constants 2006-07-02 13:58:47 -07:00
mips [PATCH] sched: cleanup, remove task_t, convert to struct task_struct 2006-07-03 15:27:11 -07:00
parisc [PATCH] irq-flags: PARISC: Use the new IRQF_ constants 2006-07-02 13:58:47 -07:00
powerpc [PATCH] powerpc: Fix loss of interrupts with MPIC 2006-07-05 09:29:43 -07:00
ppc Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2006-07-03 21:26:12 -07:00
s390 [PATCH] lockdep: irqtrace subsystem, move account_system_vtime() calls into kernel/softirq.c 2006-07-03 15:27:10 -07:00
sh [PATCH] irq-flags: SH: Use the new IRQF_ constants 2006-07-02 13:58:48 -07:00
sh64 [PATCH] irq-flags: SH64: Use the new IRQF_ constants 2006-07-02 13:58:48 -07:00
sparc [PATCH] irq-flags: SPARC: Use the new IRQF_ constants 2006-07-02 13:58:48 -07:00
sparc64 [SPARC64]: Fix stack overflow checking in modular non-SMP kernels. 2006-07-05 20:42:58 -07:00
um [PATCH] sched: cleanup, remove task_t, convert to struct task_struct 2006-07-03 15:27:11 -07:00
v850 [PATCH] irq-flags: V850: Use the new IRQF_ constants 2006-07-02 13:58:48 -07:00
x86_64 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2006-07-03 21:26:12 -07:00
xtensa [PATCH] irq-flags: XTENSA: Use the new IRQF_ constants 2006-07-02 13:58:49 -07:00