linux-kernel - [PATCH 4/5] select: add a poll specific struct to the restart

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Message-ID: <20080831093038.5a35e517@infradead.org>
Date:	Sun, 31 Aug 2008 09:30:38 -0700
From:	Arjan van de Ven <arjan@...radead.org>
To:	linux-kernel@...r.kernel.org
Cc:	Arjan van de Ven <arjan@...radead.org>, tglx@...x.de,
	mingo@...e.hu, torvalds@...ux-foundation.org,
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 4/5] select: add a poll specific struct to the restart_block
 union


From: Thomas Gleixner <tglx@...utronix.de>
Date: Sun, 31 Aug 2008 08:19:15 -0700
Subject: [PATCH] select: add a poll specific struct to the restart_block union

with hrtimer poll/select, the signal restart data no longer is a single
long representing a jiffies count, but it becomes a second/nanosecond pair
that also needs to encode if there was a timeout at all or not.

This patch adds a struct to the restart_block union for this purpose

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>
---
 include/linux/thread_info.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 38a5647..e6b820f 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -38,6 +38,14 @@ struct restart_block {
 #endif
 			u64 expires;
 		} nanosleep;
+		/* For poll */
+		struct {
+			struct pollfd __user *ufds;
+			int nfds;
+			int has_timeout;
+			unsigned long tv_sec;
+			unsigned long tv_nsec;
+		} poll;
 	};
 };
 
-- 
1.5.5.1

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