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x86: make x86_32 use tlb_64.c

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Impact: less contention when issuing invalidate IPI, cleanup

Make x86_32 use the same tlb code as 64bit.  The 64bit code uses
multiple IPI vectors for tlb shootdown to reduce contention.  This
patch makes x86_32 allocate the same 8 IPIs as x86_64 and share the
code paths.

Note that the usage of asmlinkage is inconsistent for x86_32 and 64
and calls for further cleanup.  This has been noted with a FIXME
comment in tlb_64.c.

Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Tejun Heo
2009-01-21 17:26:06 +09:00
parent 6dd01bedee
commit 02cf94c370
7 changed files with 47 additions and 248 deletions
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6
arch/x86/kernel/entry_32.S
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@@ -672,7 +672,7 @@ common_interrupt:
ENDPROC(common_interrupt)
CFI_ENDPROC
#define BUILD_INTERRUPT(name, nr) \
#define BUILD_INTERRUPT3(name, nr, fn) \
ENTRY(name) \
RING0_INT_FRAME; \
pushl $~(nr); \
@@ -680,11 +680,13 @@ ENTRY(name) \
SAVE_ALL; \
TRACE_IRQS_OFF \
movl %esp,%eax; \
call smp_##name; \
call fn; \
jmp ret_from_intr; \
CFI_ENDPROC; \
ENDPROC(name)
#define BUILD_INTERRUPT(name, nr) BUILD_INTERRUPT3(name, nr, smp_##name)
/* The include is where all of the SMP etc. interrupts come from */
#include "entry_arch.h"