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authorWill Deacon <will.deacon@arm.com>2018-09-19 13:39:26 +0100
committerWill Deacon <will.deacon@arm.com>2018-12-07 12:35:46 +0000
commit08861d33d680838753f1f9d3ba9480d3651b764d (patch)
treed4adfa8fdb8410eabebe2e9ba273134653a178a4 /arch/s390
parenta21b0b78eaf770c6c3814dd59d213cd6aa47eecd (diff)
downloadlinux-08861d33d680838753f1f9d3ba9480d3651b764d.tar.bz2
preempt: Move PREEMPT_NEED_RESCHED definition into arch code
PREEMPT_NEED_RESCHED is never used directly, so move it into the arch code where it can potentially be implemented using either a different bit in the preempt count or as an entirely separate entity. Cc: Robert Love <rml@tech9.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/preempt.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/preempt.h b/arch/s390/include/asm/preempt.h
index 23a14d187fb1..b5ea9e14c017 100644
--- a/arch/s390/include/asm/preempt.h
+++ b/arch/s390/include/asm/preempt.h
@@ -8,6 +8,8 @@
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+/* We use the MSB mostly because its available */
+#define PREEMPT_NEED_RESCHED 0x80000000
#define PREEMPT_ENABLED (0 + PREEMPT_NEED_RESCHED)
static inline int preempt_count(void)