From abfd726ed8afbfc2cf7f18ae2da030ef016c1ad0 Mon Sep 17 00:00:00 2001 From: "kfraser@localhost.localdomain" Date: Thu, 30 Aug 2007 16:17:07 +0100 Subject: PV-on-HVM: Define DEFINE_RWLOCK() macro for older Linux kernels. Signed-off-by: Ben Guthro --- .../linux-2.6/compat-include/xen/platform-compat.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'unmodified_drivers') diff --git a/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h b/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h index ad53d95b79..54a81f6ee9 100644 --- a/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h +++ b/unmodified_drivers/linux-2.6/compat-include/xen/platform-compat.h @@ -116,4 +116,13 @@ extern char *kasprintf(gfp_t gfp, const char *fmt, ...) #define DEFINE_SEQLOCK(x) seqlock_t x = SEQLOCK_UNLOCKED #endif +/* Bug in RHEL4-U3: rw_lock_t is mistakenly defined in DEFINE_RWLOCK() macro */ +#if defined(__LINUX_SPINLOCK_H) && defined(DEFINE_RWLOCK) +#define rw_lock_t rwlock_t +#endif + +#if defined(__LINUX_SPINLOCK_H) && !defined(DEFINE_RWLOCK) +#define DEFINE_RWLOCK(x) rwlock_t x = RW_LOCK_UNLOCKED +#endif + #endif -- cgit v1.2.3