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| author | Pavel Tatashin <pasha.tatashin@oracle.com> | 2017-05-31 18:25:23 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-06 23:45:29 +0300 |
| commit | 7a5b4bbf49fe86ce77488a70c5dccfe2d50d7a2d (patch) | |
| tree | d53db5c2f4b5cd9a675a1b3f85fe370ec8a672b5 /arch/sparc/include/asm/mmu_context_64.h | |
| parent | c4415235b2be0cc791572e8e7f7466ab8f73a2bf (diff) | |
| download | linux-7a5b4bbf49fe86ce77488a70c5dccfe2d50d7a2d.tar.xz | |
sparc64: add per-cpu mm of secondary contexts
The new wrap is going to use information from this array to figure out
mm's that currently have valid secondary contexts setup.
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
Reviewed-by: Steven Sistare <steven.sistare@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/mmu_context_64.h')
| -rw-r--r-- | arch/sparc/include/asm/mmu_context_64.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/sparc/include/asm/mmu_context_64.h b/arch/sparc/include/asm/mmu_context_64.h index 734a1343d77d..edb45247bfa9 100644 --- a/arch/sparc/include/asm/mmu_context_64.h +++ b/arch/sparc/include/asm/mmu_context_64.h @@ -19,6 +19,7 @@ extern spinlock_t ctx_alloc_lock; extern unsigned long tlb_context_cache; extern unsigned long mmu_context_bmap[]; +DECLARE_PER_CPU(struct mm_struct *, per_cpu_secondary_mm); void get_new_mmu_context(struct mm_struct *mm); #ifdef CONFIG_SMP void smp_new_mmu_context_version(void); @@ -76,8 +77,9 @@ void __flush_tlb_mm(unsigned long, unsigned long); static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, struct task_struct *tsk) { unsigned long ctx_valid, flags; - int cpu; + int cpu = smp_processor_id(); + per_cpu(per_cpu_secondary_mm, cpu) = mm; if (unlikely(mm == &init_mm)) return; @@ -123,7 +125,6 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str * for the first time, we must flush that context out of the * local TLB. */ - cpu = smp_processor_id(); if (!ctx_valid || !cpumask_test_cpu(cpu, mm_cpumask(mm))) { cpumask_set_cpu(cpu, mm_cpumask(mm)); __flush_tlb_mm(CTX_HWBITS(mm->context), |