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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-02-13 16:08:12 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-30 14:34:23 +0200 |
| commit | d2e60075a3d4422dc54b919f3b125d8066b839d4 (patch) | |
| tree | 0a053b218a2b6645da86b32e75947899158d3c33 /arch/powerpc/include/asm/smp.h | |
| parent | powerpc/64s: Do not allocate lppaca if we are not virtualized (diff) | |
| download | linux-d2e60075a3d4422dc54b919f3b125d8066b839d4.tar.xz linux-d2e60075a3d4422dc54b919f3b125d8066b839d4.zip | |
powerpc/64: Use array of paca pointers and allocate pacas individually
Change the paca array into an array of pointers to pacas. Allocate
pacas individually.
This allows flexibility in where the PACAs are allocated. Future work
will allocate them node-local. Platforms that don't have address limits
on PACAs would be able to defer PACA allocations until later in boot
rather than allocate all possible ones up-front then freeing unused.
This is slightly more overhead (one additional indirection) for cross
CPU paca references, but those aren't too common.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/smp.h')
| -rw-r--r-- | arch/powerpc/include/asm/smp.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h index fac963e10d39..ec7b299350d9 100644 --- a/arch/powerpc/include/asm/smp.h +++ b/arch/powerpc/include/asm/smp.h @@ -170,12 +170,12 @@ static inline const struct cpumask *cpu_sibling_mask(int cpu) #ifdef CONFIG_PPC64 static inline int get_hard_smp_processor_id(int cpu) { - return paca[cpu].hw_cpu_id; + return paca_ptrs[cpu]->hw_cpu_id; } static inline void set_hard_smp_processor_id(int cpu, int phys) { - paca[cpu].hw_cpu_id = phys; + paca_ptrs[cpu]->hw_cpu_id = phys; } #else /* 32-bit */ |