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| author | Tejun Heo <tj@kernel.org> | 2009-01-21 17:26:06 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-01-21 17:26:06 +0900 |
| commit | 02cf94c370e0dc9bf408fe45eb86fe9ad58eaf7f (patch) | |
| tree | e12620b5fead5ec6d90b54046a5025c2b28234a0 /arch/x86/kernel/tlb_64.c | |
| parent | 6dd01bedee6c3191643db303a1dc530bad56ec55 (diff) | |
| download | kernel_samsung_smdk4412-02cf94c370e0dc9bf408fe45eb86fe9ad58eaf7f.zip kernel_samsung_smdk4412-02cf94c370e0dc9bf408fe45eb86fe9ad58eaf7f.tar.gz kernel_samsung_smdk4412-02cf94c370e0dc9bf408fe45eb86fe9ad58eaf7f.tar.bz2 | |
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>
Diffstat (limited to 'arch/x86/kernel/tlb_64.c')
| -rw-r--r-- | arch/x86/kernel/tlb_64.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/x86/kernel/tlb_64.c b/arch/x86/kernel/tlb_64.c index 19ac661..b3ca1b9 100644 --- a/arch/x86/kernel/tlb_64.c +++ b/arch/x86/kernel/tlb_64.c @@ -113,7 +113,17 @@ EXPORT_SYMBOL_GPL(leave_mm); * Interrupts are disabled. */ -asmlinkage void smp_invalidate_interrupt(struct pt_regs *regs) +/* + * FIXME: use of asmlinkage is not consistent. On x86_64 it's noop + * but still used for documentation purpose but the usage is slightly + * inconsistent. On x86_32, asmlinkage is regparm(0) but interrupt + * entry calls in with the first parameter in %eax. Maybe define + * intrlinkage? + */ +#ifdef CONFIG_X86_64 +asmlinkage +#endif +void smp_invalidate_interrupt(struct pt_regs *regs) { unsigned int cpu; unsigned int sender; |