From: David Miller <davem@davemloft.net>
To: peterz@infradead.org
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
sparclinux@vger.kernel.org
Subject: [PATCH 2/4] sparc64: Implement local_irq_save_nmi() override.
Date: Fri, 09 Apr 2010 16:01:37 -0700 (PDT) [thread overview]
Message-ID: <20100409.160137.48119461.davem@davemloft.net> (raw)
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/include/asm/irqflags_64.h | 29 +++++++++++++++++++++++++++++
1 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/include/asm/irqflags_64.h b/arch/sparc/include/asm/irqflags_64.h
index 8b49bf9..fa1e00e 100644
--- a/arch/sparc/include/asm/irqflags_64.h
+++ b/arch/sparc/include/asm/irqflags_64.h
@@ -49,6 +49,16 @@ static inline void raw_local_irq_disable(void)
);
}
+static inline void raw_local_irq_disable_nmi(void)
+{
+ __asm__ __volatile__(
+ "wrpr %0, %%pil"
+ : /* no outputs */
+ : "i" (PIL_NMI)
+ : "memory"
+ );
+}
+
static inline void raw_local_irq_enable(void)
{
__asm__ __volatile__(
@@ -83,9 +93,28 @@ static inline unsigned long __raw_local_irq_save(void)
return flags;
}
+static inline unsigned long __raw_local_irq_save_nmi(void)
+{
+ unsigned long flags = __raw_local_save_flags();
+
+ raw_local_irq_disable_nmi();
+
+ return flags;
+}
+
#define raw_local_irq_save(flags) \
do { (flags) = __raw_local_irq_save(); } while (0)
+#define raw_local_irq_save_nmi(flags) \
+ do { (flags) = __raw_local_irq_save_nmi(); } while (0)
+
+#define local_irq_save_nmi(flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ raw_local_irq_save_nmi(flags); \
+ trace_hardirqs_off(); \
+ } while (0)
+
#endif /* (__ASSEMBLY__) */
#endif /* !(_ASM_IRQFLAGS_H) */
--
1.7.0.4
reply other threads:[~2010-04-09 23:01 UTC|newest]
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