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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-06-06 16:08:32 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-02 13:40:24 +0300 |
| commit | 4e287e655e108cbbd6e3e7dcc49d591c8aa5a8a4 (patch) | |
| tree | a7f03b60ca119fe6aaf6abed611a4374444ed172 /arch/powerpc/kernel/smp.c | |
| parent | ede8e2bbb0eb3370e4dc5484b40eb22850a09b92 (diff) | |
| download | linux-4e287e655e108cbbd6e3e7dcc49d591c8aa5a8a4.tar.xz | |
powerpc: use spin loop primitives in some functions
Use the different spin loop primitives in some simple powerpc
spin loops, including those which will spin as a common case.
This will help to test the spin loop primitives before more
conversions are done.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Add some includes of <linux/processor.h>]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 418019728efa..a975ddf77200 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -33,6 +33,7 @@ #include <linux/notifier.h> #include <linux/topology.h> #include <linux/profile.h> +#include <linux/processor.h> #include <asm/ptrace.h> #include <linux/atomic.h> @@ -767,8 +768,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *tidle) smp_ops->give_timebase(); /* Wait until cpu puts itself in the online & active maps */ - while (!cpu_online(cpu)) - cpu_relax(); + spin_until_cond(cpu_online(cpu)); return 0; } |