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From: Prashanth T <prasht@in.ibm.com>
To: rml@tech9.net
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] rwlock_is_locked undefined for UP systems
Date: Fri, 16 Jan 2004 19:15:11 +0530	[thread overview]
Message-ID: <4007EAE7.2030104@in.ibm.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 253 bytes --]

Hi,
    I had to use rwlock_is_locked( ) with linux2.6 for kdb and noticed that
this routine to be undefined for UP.  I have attached the patch for 2.6.1
below to return 0 for rwlock_is_locked( ) on UP systems.
Please let me know.

Thanks
Prashanth





[-- Attachment #2: rwlock-check-UP.patch --]
[-- Type: text/plain, Size: 585 bytes --]

diff -urN linux-2.6.1/include/linux/spinlock.h linux-2.6.1-rwlock-patch/include/linux/spinlock.h
--- linux-2.6.1/include/linux/spinlock.h	2004-01-09 12:29:33.000000000 +0530
+++ linux-2.6.1-rwlock-patch/include/linux/spinlock.h	2004-01-16 18:15:10.000000000 +0530
@@ -176,6 +176,7 @@
 #endif
 
 #define rwlock_init(lock)	do { (void)(lock); } while(0)
+#define rwlock_is_locked(lock)  ((void)(lock), 0)
 #define _raw_read_lock(lock)	do { (void)(lock); } while(0)
 #define _raw_read_unlock(lock)	do { (void)(lock); } while(0)
 #define _raw_write_lock(lock)	do { (void)(lock); } while(0)

             reply	other threads:[~2004-01-16 13:42 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-16 13:45 Prashanth T [this message]
2004-01-16 13:55 ` [PATCH] rwlock_is_locked undefined for UP systems Arjan van de Ven
2004-01-16 14:53   ` Joe Thornber
2004-01-16 15:14     ` Nikita Danilov
2004-01-16 18:10       ` Mike Fedyk
2004-01-16 14:09 ` Christoph Hellwig
2004-01-19  6:12   ` Prashanth T

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