From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/s390/include/asm/irqflags.h | 72 +++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 kernel/arch/s390/include/asm/irqflags.h (limited to 'kernel/arch/s390/include/asm/irqflags.h') diff --git a/kernel/arch/s390/include/asm/irqflags.h b/kernel/arch/s390/include/asm/irqflags.h new file mode 100644 index 000000000..16aa0c779 --- /dev/null +++ b/kernel/arch/s390/include/asm/irqflags.h @@ -0,0 +1,72 @@ +/* + * Copyright IBM Corp. 2006, 2010 + * Author(s): Martin Schwidefsky + */ + +#ifndef __ASM_IRQFLAGS_H +#define __ASM_IRQFLAGS_H + +#include + +/* store then OR system mask. */ +#define __arch_local_irq_stosm(__or) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stosm %0,%1" \ + : "=Q" (__mask) : "i" (__or) : "memory"); \ + __mask; \ +}) + +/* store then AND system mask. */ +#define __arch_local_irq_stnsm(__and) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stnsm %0,%1" \ + : "=Q" (__mask) : "i" (__and) : "memory"); \ + __mask; \ +}) + +/* set system mask. */ +static inline notrace void __arch_local_irq_ssm(unsigned long flags) +{ + asm volatile("ssm %0" : : "Q" (flags) : "memory"); +} + +static inline notrace unsigned long arch_local_save_flags(void) +{ + return __arch_local_irq_stnsm(0xff); +} + +static inline notrace unsigned long arch_local_irq_save(void) +{ + return __arch_local_irq_stnsm(0xfc); +} + +static inline notrace void arch_local_irq_disable(void) +{ + arch_local_irq_save(); +} + +static inline notrace void arch_local_irq_enable(void) +{ + __arch_local_irq_stosm(0x03); +} + +static inline notrace void arch_local_irq_restore(unsigned long flags) +{ + __arch_local_irq_ssm(flags); +} + +static inline notrace bool arch_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (3UL << (BITS_PER_LONG - 8))); +} + +static inline notrace bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __ASM_IRQFLAGS_H */ -- cgit 1.2.3-korg