diff options
| author | Tony Luck <tony.luck@intel.com> | 2005-10-31 10:51:57 -0800 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-10-31 10:51:57 -0800 |
| commit | c7fb577e2a6cb04732541f2dc402bd46747f7558 (patch) | |
| tree | df3b1a1922ed13bfbcc45d08650c38beeb1a7bd1 /arch/ia64/mm/tlb.c | |
| parent | 9cec58dc138d6fcad9f447a19c8ff69f6540e667 (diff) | |
| parent | 581c1b14394aee60aff46ea67d05483261ed6527 (diff) | |
| download | linux-c7fb577e2a6cb04732541f2dc402bd46747f7558.tar.bz2 | |
manual update from upstream:
Applied Al's change 06a544971fad0992fe8b92c5647538d573089dd4
to new location of swiotlb.c
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/tlb.c')
| -rw-r--r-- | arch/ia64/mm/tlb.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c index 464557e4ed82..c79a9b96d02b 100644 --- a/arch/ia64/mm/tlb.c +++ b/arch/ia64/mm/tlb.c @@ -77,19 +77,25 @@ wrap_mmu_context (struct mm_struct *mm) /* can't call flush_tlb_all() here because of race condition with O(1) scheduler [EF] */ { int cpu = get_cpu(); /* prevent preemption/migration */ - for (i = 0; i < NR_CPUS; ++i) - if (cpu_online(i) && (i != cpu)) + for_each_online_cpu(i) { + if (i != cpu) per_cpu(ia64_need_tlb_flush, i) = 1; + } put_cpu(); } local_flush_tlb_all(); } void -ia64_global_tlb_purge (unsigned long start, unsigned long end, unsigned long nbits) +ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long nbits) { static DEFINE_SPINLOCK(ptcg_lock); + if (mm != current->active_mm) { + flush_tlb_all(); + return; + } + /* HW requires global serialization of ptc.ga. */ spin_lock(&ptcg_lock); { @@ -135,15 +141,12 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long unsigned long size = end - start; unsigned long nbits; +#ifndef CONFIG_SMP if (mm != current->active_mm) { - /* this does happen, but perhaps it's not worth optimizing for? */ -#ifdef CONFIG_SMP - flush_tlb_all(); -#else mm->context = 0; -#endif return; } +#endif nbits = ia64_fls(size + 0xfff); while (unlikely (((1UL << nbits) & purge.mask) == 0) && (nbits < purge.max_bits)) @@ -153,12 +156,14 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long start &= ~((1UL << nbits) - 1); # ifdef CONFIG_SMP - platform_global_tlb_purge(start, end, nbits); + platform_global_tlb_purge(mm, start, end, nbits); # else + preempt_disable(); do { ia64_ptcl(start, (nbits<<2)); start += (1UL << nbits); } while (start < end); + preempt_enable(); # endif ia64_srlz_i(); /* srlz.i implies srlz.d */ |