From: Deepak Saxena <dsaxena@plexity.net>
To: mingo@elte.hu
Cc: ralf@linux-mips.org, linux-mips@linux-mips.org,
Manish Lachwani <mlachwani@mvista.com>
Subject: [PATCH] Make MIPS udelay() preempt safe
Date: Mon, 19 Mar 2007 16:49:45 -0700 [thread overview]
Message-ID: <20070319234945.GA11944@plexity.net> (raw)
Fix MIPS udelay to make is preempt safe under DEBUG_PREEMPT
Signed-off-by: Manish Lachwani <mlachwani@mvista.com>
Signed-off-by: Deepak Saxena <dsaxena@mvista.com>
---
This needs to go into -rt patch set or directly into the MIPS tree.
Applies cleanly to 2.6.21-rc4 and 2.6.21-rc3-rt0.
include/asm-mips/delay.h | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.18/include/asm-mips/delay.h
===================================================================
--- linux-2.6.18.orig/include/asm-mips/delay.h
+++ linux-2.6.18/include/asm-mips/delay.h
@@ -79,7 +79,7 @@ static inline void __udelay(unsigned lon
__delay(usecs);
}
-#define __udelay_val cpu_data[smp_processor_id()].udelay_val
+#define __udelay_val cpu_data[raw_smp_processor_id()].udelay_val
#define udelay(usecs) __udelay((usecs),__udelay_val)
--
Deepak Saxena - dsaxena@plexity.net - http://www.plexity.net
In the end, they will not say, "those were dark times," they will ask
"why were their poets silent?" - Bertolt Brecht
next reply other threads:[~2007-03-20 0:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-19 23:49 Deepak Saxena [this message]
2007-03-20 0:03 ` [PATCH] Make MIPS udelay() preempt safe Deepak Saxena
2007-03-20 1:43 ` Atsushi Nemoto
2007-03-20 10:58 ` Ralf Baechle
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