diff options
| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2018-03-21 15:07:49 +0100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-06-04 00:39:15 +1000 |
| commit | 48bdcace599b8e6241735a40fdb418a8471db089 (patch) | |
| tree | 5ce635639970c4dc0ef86d7225face67d311e442 | |
| parent | powerpc/mm: constify FIRST_CONTEXT in mmu_context_nohash (diff) | |
powerpc/mm: Avoid unnecessary test and reduce code size
no_selective_tlbil hence the use of either steal_all_contexts()
or steal_context_up() depends on the subarch, it won't change
during run. Only the 8xx uses steal_all_contexts and CONFIG_PPC_8xx
is exclusive of other processors.
This patch replaces the test of no_selective_tlbil global var by
a test of CONFIG_PPC_8xx selection. It avoids the test and
removes unnecessary code.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/mm/mmu_context_nohash.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c index 5051c9363f8c..3fbe36266838 100644 --- a/arch/powerpc/mm/mmu_context_nohash.c +++ b/arch/powerpc/mm/mmu_context_nohash.c @@ -62,7 +62,6 @@ static unsigned long *context_map; static unsigned long *stale_map[NR_CPUS]; static struct mm_struct **context_mm; static DEFINE_RAW_SPINLOCK(context_lock); -static bool no_selective_tlbil; #define CTX_MAP_SIZE \ (sizeof(unsigned long) * (last_context / BITS_PER_LONG + 1)) @@ -279,7 +278,7 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, goto stolen; } #endif /* CONFIG_SMP */ - if (no_selective_tlbil) + if (IS_ENABLED(CONFIG_PPC_8xx)) id = steal_all_contexts(); else id = steal_context_up(id); @@ -440,16 +439,12 @@ void __init mmu_context_init(void) * present if needed. * -- BenH */ - if (mmu_has_feature(MMU_FTR_TYPE_8xx)) { + if (mmu_has_feature(MMU_FTR_TYPE_8xx)) last_context = 16; - no_selective_tlbil = true; - } else if (mmu_has_feature(MMU_FTR_TYPE_47x)) { + else if (mmu_has_feature(MMU_FTR_TYPE_47x)) last_context = 65535; - no_selective_tlbil = false; - } else { + else last_context = 255; - no_selective_tlbil = false; - } #ifdef DEBUG_CLAMP_LAST_CONTEXT last_context = DEBUG_CLAMP_LAST_CONTEXT; |