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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-02-14 01:08:12 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-30 23:34:23 +1100 |
| commit | d2e60075a3d4422dc54b919f3b125d8066b839d4 (patch) | |
| tree | 0a053b218a2b6645da86b32e75947899158d3c33 /arch/powerpc/platforms/pseries/smp.c | |
| parent | 8e0b634b132752ec3eba50afb952502b1a87d6ba (diff) | |
| download | talos-obmc-linux-d2e60075a3d4422dc54b919f3b125d8066b839d4.tar.gz talos-obmc-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/platforms/pseries/smp.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/smp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c index 2e184829e5d4..d506bf661f0f 100644 --- a/arch/powerpc/platforms/pseries/smp.c +++ b/arch/powerpc/platforms/pseries/smp.c @@ -110,7 +110,7 @@ static inline int smp_startup_cpu(unsigned int lcpu) } /* Fixup atomic count: it exited inside IRQ handler. */ - task_thread_info(paca[lcpu].__current)->preempt_count = 0; + task_thread_info(paca_ptrs[lcpu]->__current)->preempt_count = 0; #ifdef CONFIG_HOTPLUG_CPU if (get_cpu_current_state(lcpu) == CPU_STATE_INACTIVE) goto out; @@ -165,7 +165,7 @@ static int smp_pSeries_kick_cpu(int nr) * cpu_start field to become non-zero After we set cpu_start, * the processor will continue on to secondary_start */ - paca[nr].cpu_start = 1; + paca_ptrs[nr]->cpu_start = 1; #ifdef CONFIG_HOTPLUG_CPU set_preferred_offline_state(nr, CPU_STATE_ONLINE); |
