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authorRusty Russell <rusty@rustcorp.com.au>2009-01-10 21:58:09 -0800
committerIngo Molnar <mingo@elte.hu>2009-01-11 19:13:06 +0100
commit4595f9620cda8a1e973588e743cf5f8436dd20c6 (patch)
tree98a47cff17f58262979c7d04590cb3ffc0deead9 /arch/x86/include/asm/uv
parent802bf931f2688ad125b73db597ce63cc842fb27a (diff)
x86: change flush_tlb_others to take a const struct cpumask
Impact: reduce stack usage, use new cpumask API. This is made a little more tricky by uv_flush_tlb_others which actually alters its argument, for an IPI to be sent to the remaining cpus in the mask. I solve this by allocating a cpumask_var_t for this case and falling back to IPI should this fail. To eliminate temporaries in the caller, all flush_tlb_others implementations now do the this-cpu-elimination step themselves. Note also the curious "cpus_or(f->flush_cpumask, cpumask, f->flush_cpumask)" which has been there since pre-git and yet f->flush_cpumask is always zero at this point. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com>
Diffstat (limited to 'arch/x86/include/asm/uv')
-rw-r--r--arch/x86/include/asm/uv/uv_bau.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/uv/uv_bau.h b/arch/x86/include/asm/uv/uv_bau.h
index 50423c7b56b..74e6393bfdd 100644
--- a/arch/x86/include/asm/uv/uv_bau.h
+++ b/arch/x86/include/asm/uv/uv_bau.h
@@ -325,7 +325,8 @@ static inline void bau_cpubits_clear(struct bau_local_cpumask *dstp, int nbits)
#define cpubit_isset(cpu, bau_local_cpumask) \
test_bit((cpu), (bau_local_cpumask).bits)
-extern int uv_flush_tlb_others(cpumask_t *, struct mm_struct *, unsigned long);
+extern int uv_flush_tlb_others(struct cpumask *,
+ struct mm_struct *, unsigned long);
extern void uv_bau_message_intr1(void);
extern void uv_bau_timeout_intr1(void);