| Message ID | 20161101143303.19657-1-bobby.prani@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 01/11/2016 15:33, Pranith Kumar wrote: > We can use __atomic_load_n() saving a store and load from the _val. > > Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> > --- > include/qemu/atomic.h | 4 +--- > 1 file changed, 1 insertion(+), 3 deletions(-) > > diff --git a/include/qemu/atomic.h b/include/qemu/atomic.h > index 878fa07..6775603 100644 > --- a/include/qemu/atomic.h > +++ b/include/qemu/atomic.h > @@ -144,9 +144,7 @@ > #define atomic_load_acquire(ptr) \ > ({ \ > QEMU_BUILD_BUG_ON(sizeof(*ptr) > sizeof(void *)); \ > - typeof_strip_qual(*ptr) _val; \ > - __atomic_load(ptr, &_val, __ATOMIC_ACQUIRE); \ > - _val; \ > + __atomic_load_n(ptr, __ATOMIC_ACQUIRE); \ > }) > > #define atomic_store_release(ptr, i) do { \ > Can you do the same for atomic_rcu_read__nocheck (both implementations)? Thanks, Paolo
On Tue, Nov 1, 2016 at 10:44 AM, Paolo Bonzini <pbonzini@redhat.com> wrote: > > Can you do the same for atomic_rcu_read__nocheck (both implementations)? > Sure, will send an updated patch.
diff --git a/include/qemu/atomic.h b/include/qemu/atomic.h index 878fa07..6775603 100644 --- a/include/qemu/atomic.h +++ b/include/qemu/atomic.h @@ -144,9 +144,7 @@ #define atomic_load_acquire(ptr) \ ({ \ QEMU_BUILD_BUG_ON(sizeof(*ptr) > sizeof(void *)); \ - typeof_strip_qual(*ptr) _val; \ - __atomic_load(ptr, &_val, __ATOMIC_ACQUIRE); \ - _val; \ + __atomic_load_n(ptr, __ATOMIC_ACQUIRE); \ }) #define atomic_store_release(ptr, i) do { \
We can use __atomic_load_n() saving a store and load from the _val. Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> --- include/qemu/atomic.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)