Am 28.06.2011 13:09, schrieb Michael S. Tsirkin:
On Mon, Jun 27, 2011 at 08:19:47PM +0200, Jan Kiszka wrote:
From: Jan Kiszka<jan.kiszka@xxxxxxxxxxx>
No longer used.
Signed-off-by: Jan Kiszka<jan.kiszka@xxxxxxxxxxx>
I think it's actually handy to build on old systems which have
a recent enough kernel but not the header.
Yep, I'm running recent qemu-kvm and kernels on CentOS 5.6.
The current eventfd.h was handy in the beginning, but some day I had big
troubles with crashing qemu-kvm. It turned out that I had to switch from
eventfd to eventfd2. IIRC the old eventfd doesn't care about the flags.
My version of eventfd.h is attached.
Bernhard
---
compat/sys/eventfd.h | 13 -------------
1 files changed, 0 insertions(+), 13 deletions(-)
delete mode 100644 compat/sys/eventfd.h
diff --git a/compat/sys/eventfd.h b/compat/sys/eventfd.h
deleted file mode 100644
index f55d96a..0000000
--- a/compat/sys/eventfd.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef _COMPAT_SYS_EVENTFD
-#define _COMPAT_SYS_EVENTFD
-
-#include<unistd.h>
-#include<syscall.h>
-
-
-static inline int eventfd (int count, int flags)
-{
- return syscall(SYS_eventfd, count, flags);
-}
-
-#endif
--
1.7.1
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#ifndef _COMPAT_SYS_EVENTFD
#define _COMPAT_SYS_EVENTFD
#include <unistd.h>
#include <syscall.h>
/* Flags for signalfd. */
enum
{
EFD_SEMAPHORE = 1,
#define EFD_SEMAPHORE EFD_SEMAPHORE
EFD_CLOEXEC = 02000000,
#define EFD_CLOEXEC EFD_CLOEXEC
EFD_NONBLOCK = 04000
#define EFD_NONBLOCK EFD_NONBLOCK
};
#ifndef __NR_eventfd2
#if defined(__x86_64__)
#define __NR_eventfd2 290
#elif defined(__i386__)
#define __NR_eventfd2 328
#else
#error Cannot detect your architecture!
#endif
#endif
static inline int eventfd (int count, int flags)
{
return syscall(__NR_eventfd2, count, flags);
}
#endif
