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author | Nicholas Piggin <npiggin@gmail.com> | 2018-02-14 01:08:12 +1000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-30 23:34:23 +1100 |
commit | d2e60075a3d4422dc54b919f3b125d8066b839d4 (patch) | |
tree | 0a053b218a2b6645da86b32e75947899158d3c33 /arch/powerpc/platforms/pseries/hotplug-cpu.c | |
parent | 8e0b634b132752ec3eba50afb952502b1a87d6ba (diff) | |
download | linux-d2e60075a3d4422dc54b919f3b125d8066b839d4.tar.bz2 |
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/platforms/pseries/hotplug-cpu.c')
-rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index dceb51454d8d..357471aa99a6 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -233,7 +233,7 @@ static void pseries_cpu_die(unsigned int cpu) * done here. Change isolate state to Isolate and * change allocation-state to Unusable. */ - paca[cpu].cpu_start = 0; + paca_ptrs[cpu]->cpu_start = 0; } /* |