From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>
Subject: [patch 3/5] genirq: Add IRQF_NO_THREAD
Date: Wed, 23 Feb 2011 23:52:18 -0000 [thread overview]
Message-ID: <20110223234956.578893460@linutronix.de> (raw)
In-Reply-To: <20110223231601.613115832@linutronix.de>
[-- Attachment #1: genirq-add-nothread-flag-for-interrupts.patch --]
[-- Type: text/plain, Size: 1273 bytes --]
Some low level interrupts cannot be threaded even when we force thread
all interrupt handlers. Add a flag to annotate such interrupts. Add
all timer interrupts to this category by default.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/interrupt.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: linux-2.6-tip/include/linux/interrupt.h
===================================================================
--- linux-2.6-tip.orig/include/linux/interrupt.h
+++ linux-2.6-tip/include/linux/interrupt.h
@@ -58,6 +58,7 @@
* irq line disabled until the threaded handler has been run.
* IRQF_NO_SUSPEND - Do not disable this IRQ during suspend
* IRQF_FORCE_RESUME - Force enable it on resume even if IRQF_NO_SUSPEND is set
+ * IRQF_NO_THREAD - Interrupt cannot be threaded
*/
#define IRQF_DISABLED 0x00000020
#define IRQF_SAMPLE_RANDOM 0x00000040
@@ -70,8 +71,9 @@
#define IRQF_ONESHOT 0x00002000
#define IRQF_NO_SUSPEND 0x00004000
#define IRQF_FORCE_RESUME 0x00008000
+#define IRQF_NO_THREAD 0x00010000
-#define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND)
+#define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND | IRQF_NO_THREAD)
/*
* These values can be returned by request_any_context_irq() and
next prev parent reply other threads:[~2011-02-23 23:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-23 23:52 [patch 0/5] genirq: Forced threaded interrupt handlers Thomas Gleixner
2011-02-23 23:52 ` [patch 1/5] genirq: Prepare the handling of shared oneshot interrupts Thomas Gleixner
2011-02-24 2:30 ` Linus Torvalds
2011-02-24 17:56 ` Thomas Gleixner
2011-02-26 16:22 ` [tip:irq/core] " tip-bot for Thomas Gleixner
2011-02-23 23:52 ` [patch 2/5] genirq: Allow " Thomas Gleixner
2011-02-26 16:22 ` [tip:irq/core] " tip-bot for Thomas Gleixner
2011-02-23 23:52 ` Thomas Gleixner [this message]
2011-02-26 16:22 ` [tip:irq/core] genirq: Add IRQF_NO_THREAD tip-bot for Thomas Gleixner
2011-02-23 23:52 ` [patch 4/5] sched: Switch wait_task_inactive to schedule_hrtimeout() Thomas Gleixner
2011-02-26 16:23 ` [tip:irq/core] " tip-bot for Thomas Gleixner
2011-02-23 23:52 ` [patch 5/5] genirq: Provide forced interrupt threading Thomas Gleixner
2011-02-26 16:23 ` [tip:irq/core] " tip-bot for Thomas Gleixner
2011-02-24 7:12 ` [patch 0/5] genirq: Forced threaded interrupt handlers Ingo Molnar
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