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| author | Michael Ellerman <michael@ozlabs.org> | 2011-04-11 21:46:19 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-04-20 17:01:18 +1000 |
| commit | de300974761d92f71cb583730ac9e1d4eb1b7156 (patch) | |
| tree | bfce8daf1dec8dff5af215bcf7647f38632490d4 /arch/powerpc/platforms/cell | |
| parent | 6c5b59b913874cae535a324a671b7ed4f17e6397 (diff) | |
| download | blackbird-op-linux-de300974761d92f71cb583730ac9e1d4eb1b7156.tar.gz blackbird-op-linux-de300974761d92f71cb583730ac9e1d4eb1b7156.zip | |
powerpc/smp: smp_ops->kick_cpu() should be able to fail
When we start a cpu we use smp_ops->kick_cpu(), which currently
returns void, it should be able to fail. Convert it to return
int, and update all uses.
Convert all the current error cases to return -ENOENT, which is
what would eventually be returned by __cpu_up() currently when
it doesn't detect the cpu as coming up in time.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/cell')
| -rw-r--r-- | arch/powerpc/platforms/cell/beat_smp.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/smp.c | 6 |
2 files changed, 6 insertions, 5 deletions
diff --git a/arch/powerpc/platforms/cell/beat_smp.c b/arch/powerpc/platforms/cell/beat_smp.c index 26efc204c47f..996df33165f1 100644 --- a/arch/powerpc/platforms/cell/beat_smp.c +++ b/arch/powerpc/platforms/cell/beat_smp.c @@ -93,12 +93,11 @@ static void __devinit smp_beatic_setup_cpu(int cpu) beatic_setup_cpu(cpu); } -static void __devinit smp_celleb_kick_cpu(int nr) +static int __devinit smp_celleb_kick_cpu(int nr) { BUG_ON(nr < 0 || nr >= NR_CPUS); - if (!smp_startup_cpu(nr)) - return; + return smp_startup_cpu(nr); } static int smp_celleb_cpu_bootable(unsigned int nr) diff --git a/arch/powerpc/platforms/cell/smp.c b/arch/powerpc/platforms/cell/smp.c index f774530075b7..03d638e2f44f 100644 --- a/arch/powerpc/platforms/cell/smp.c +++ b/arch/powerpc/platforms/cell/smp.c @@ -137,12 +137,12 @@ static void __devinit smp_cell_setup_cpu(int cpu) mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER); } -static void __devinit smp_cell_kick_cpu(int nr) +static int __devinit smp_cell_kick_cpu(int nr) { BUG_ON(nr < 0 || nr >= NR_CPUS); if (!smp_startup_cpu(nr)) - return; + return -ENOENT; /* * The processor is currently spinning, waiting for the @@ -150,6 +150,8 @@ static void __devinit smp_cell_kick_cpu(int nr) * the processor will continue on to secondary_start */ paca[nr].cpu_start = 1; + + return 0; } static int smp_cell_cpu_bootable(unsigned int nr) |
