x86: make x86_32 use tlb_64.c

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>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 46469029e9d3..a0b91aac72a1 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -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"