| Message ID | 20090816142432.GA5572@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 08/16/2009 05:24 PM, Michael S. Tsirkin wrote: > Support build on rhel 5.3 where we have syscall for eventfd but not > userspace wrapper. > > Signed-off-by: Michael S. Tsirkin<mst@redhat.com> > --- > compat/sys/eventfd.h | 13 +++++++++++++ > configure | 1 + > 2 files changed, 14 insertions(+), 0 deletions(-) > create mode 100644 compat/sys/eventfd.h > > diff --git a/compat/sys/eventfd.h b/compat/sys/eventfd.h > new file mode 100644 > index 0000000..f55d96a > --- /dev/null > +++ b/compat/sys/eventfd.h > @@ -0,0 +1,13 @@ > +#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 > diff --git a/configure b/configure > index 84af8bd..bb2680f 100755 > --- a/configure > +++ b/configure > @@ -866,6 +866,7 @@ if test "$kvm" = "yes" ; then > > kvm_cflags="-I$source_path/kvm/include" > kvm_cflags="$kvm_cflags -I$source_path/kvm/include/$kvm_arch" > +kvm_cflags="$kvm_cflags -I$source_path/compat" > > er, that will override sys/eventfd.h even if it does exist. We need to prefer the system eventfd.h to ours.
On Mon, Aug 17, 2009 at 11:06:05AM +0300, Avi Kivity wrote: >> diff --git a/configure b/configure >> index 84af8bd..bb2680f 100755 >> --- a/configure >> +++ b/configure >> @@ -866,6 +866,7 @@ if test "$kvm" = "yes" ; then >> >> kvm_cflags="-I$source_path/kvm/include" >> kvm_cflags="$kvm_cflags -I$source_path/kvm/include/$kvm_arch" >> +kvm_cflags="$kvm_cflags -I$source_path/compat" >> >> > er, that will override sys/eventfd.h even if it does exist. We need to prefer the system eventfd.h to ours. OK, -idirafter does this. > > -- > error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/compat/sys/eventfd.h b/compat/sys/eventfd.h new file mode 100644 index 0000000..f55d96a --- /dev/null +++ b/compat/sys/eventfd.h @@ -0,0 +1,13 @@ +#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 diff --git a/configure b/configure index 84af8bd..bb2680f 100755 --- a/configure +++ b/configure @@ -866,6 +866,7 @@ if test "$kvm" = "yes" ; then kvm_cflags="-I$source_path/kvm/include" kvm_cflags="$kvm_cflags -I$source_path/kvm/include/$kvm_arch" +kvm_cflags="$kvm_cflags -I$source_path/compat" # test for KVM_CAP_PIT
Support build on rhel 5.3 where we have syscall for eventfd but not userspace wrapper. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- compat/sys/eventfd.h | 13 +++++++++++++ configure | 1 + 2 files changed, 14 insertions(+), 0 deletions(-) create mode 100644 compat/sys/eventfd.h