diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-06-08 12:13:57 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-06-15 12:25:55 +0200 |
| commit | 4ecf0a43e729a7e641d800c294faabe87378fc05 (patch) | |
| tree | d7c164a2215c69a17b319076b64dd99ea1f85351 /arch/s390 | |
| parent | 38f2c691a4b3e89d476f8e8350d1ca299974b89d (diff) | |
processor: get rid of cpu_relax_yield
stop_machine is the only user left of cpu_relax_yield. Given that it
now has special semantics which are tied to stop_machine introduce a
weak stop_machine_yield function which architectures can override, and
get rid of the generic cpu_relax_yield implementation.
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 6 | ||||
| -rw-r--r-- | arch/s390/kernel/processor.c | 4 |
2 files changed, 2 insertions, 8 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 445ce9ee4404..14883b1562e0 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -222,12 +222,6 @@ static __no_kasan_or_inline unsigned short stap(void) return cpu_address; } -/* - * Give up the time slice of the virtual PU. - */ -#define cpu_relax_yield cpu_relax_yield -void cpu_relax_yield(const struct cpumask *cpumask); - #define cpu_relax() barrier() #define ECAG_CACHE_ATTRIBUTE 0 diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index 4cdaefec1b7c..6ebc2117c66c 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -7,6 +7,7 @@ #define KMSG_COMPONENT "cpu" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/stop_machine.h> #include <linux/cpufeature.h> #include <linux/bitops.h> #include <linux/kernel.h> @@ -59,7 +60,7 @@ void s390_update_cpu_mhz(void) on_each_cpu(update_cpu_mhz, NULL, 0); } -void notrace cpu_relax_yield(const struct cpumask *cpumask) +void notrace stop_machine_yield(const struct cpumask *cpumask) { int cpu, this_cpu; @@ -73,7 +74,6 @@ void notrace cpu_relax_yield(const struct cpumask *cpumask) smp_yield_cpu(cpu); } } -EXPORT_SYMBOL(cpu_relax_yield); /* * cpu_init - initializes state that is per-CPU. |