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...n <mst at redhat.com> > Acked-by: Arnd Bergmann <arnd at arndb.de> > --- > arch/s390/include/asm/barrier.h | 10 ++-------- > 1 file changed, 2 insertions(+), 8 deletions(-) > > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > index 7ffd0b1..c358c31 100644 > --- a/arch/s390/include/asm/barrier.h > +++ b/arch/s390/include/asm/barrier.h > @@ -30,14 +30,6 @@ > #define smp_rmb() rmb() > #define smp_wmb() wmb() > > -#define read_barrier_depends() do { } while (0) > -#define smp_read_barrier_depends() do { }...

...n <mst at redhat.com> > Acked-by: Arnd Bergmann <arnd at arndb.de> > --- > arch/s390/include/asm/barrier.h | 10 ++-------- > 1 file changed, 2 insertions(+), 8 deletions(-) > > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > index 7ffd0b1..c358c31 100644 > --- a/arch/s390/include/asm/barrier.h > +++ b/arch/s390/include/asm/barrier.h > @@ -30,14 +30,6 @@ > #define smp_rmb() rmb() > #define smp_wmb() wmb() > > -#define read_barrier_depends() do { } while (0) > -#define smp_read_barrier_depends() do { }...

...;arnd at arndb.de> > > > --- > > > arch/s390/include/asm/barrier.h | 10 ++-------- > > > 1 file changed, 2 insertions(+), 8 deletions(-) > > > > > > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > > > index 7ffd0b1..c358c31 100644 > > > --- a/arch/s390/include/asm/barrier.h > > > +++ b/arch/s390/include/asm/barrier.h > > > @@ -30,14 +30,6 @@ > > > #define smp_rmb() rmb() > > > #define smp_wmb() wmb() > > > > > > -#define read_barrier_depen...

...;arnd at arndb.de> > > > --- > > > arch/s390/include/asm/barrier.h | 10 ++-------- > > > 1 file changed, 2 insertions(+), 8 deletions(-) > > > > > > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > > > index 7ffd0b1..c358c31 100644 > > > --- a/arch/s390/include/asm/barrier.h > > > +++ b/arch/s390/include/asm/barrier.h > > > @@ -30,14 +30,6 @@ > > > #define smp_rmb() rmb() > > > #define smp_wmb() wmb() > > > > > > -#define read_barrier_depen...

...r, value); mb(); } while (0) > +#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) > > #ifdef __SUBARCH_HAS_LWSYNC > # define SMPWMB LWSYNC > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > index d68e11e..7ffd0b1 100644 > --- a/arch/s390/include/asm/barrier.h > +++ b/arch/s390/include/asm/barrier.h > @@ -36,7 +36,7 @@ > #define smp_mb__before_atomic() smp_mb() > #define smp_mb__after_atomic() smp_mb() > > -#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); mb(); } while...

...r, value); mb(); } while (0) > +#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) > > #ifdef __SUBARCH_HAS_LWSYNC > # define SMPWMB LWSYNC > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > index d68e11e..7ffd0b1 100644 > --- a/arch/s390/include/asm/barrier.h > +++ b/arch/s390/include/asm/barrier.h > @@ -36,7 +36,7 @@ > #define smp_mb__before_atomic() smp_mb() > #define smp_mb__after_atomic() smp_mb() > > -#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); mb(); } while...

.... Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Arnd Bergmann <arnd at arndb.de> --- arch/s390/include/asm/barrier.h | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index 7ffd0b1..c358c31 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -30,14 +30,6 @@ #define smp_rmb() rmb() #define smp_wmb() wmb() -#define read_barrier_depends() do { } while (0) -#define smp_read_barrier_depends() do { } while (0) - -#define smp_mb__before_ato...

...t; Acked-by: Arnd Bergmann <arnd at arndb.de> > > --- > > arch/s390/include/asm/barrier.h | 10 ++-------- > > 1 file changed, 2 insertions(+), 8 deletions(-) > > > > diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h > > index 7ffd0b1..c358c31 100644 > > --- a/arch/s390/include/asm/barrier.h > > +++ b/arch/s390/include/asm/barrier.h > > @@ -30,14 +30,6 @@ > > #define smp_rmb() rmb() > > #define smp_wmb() wmb() > > > > -#define read_barrier_depends() do { } while (0) > > -#...

...ar, value) do { WRITE_ONCE(var, value); mb(); } while (0) +#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); smp_mb(); } while (0) #ifdef __SUBARCH_HAS_LWSYNC # define SMPWMB LWSYNC diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h index d68e11e..7ffd0b1 100644 --- a/arch/s390/include/asm/barrier.h +++ b/arch/s390/include/asm/barrier.h @@ -36,7 +36,7 @@ #define smp_mb__before_atomic() smp_mb() #define smp_mb__after_atomic() smp_mb() -#define smp_store_mb(var, value) do { WRITE_ONCE(var, value); mb(); } while (0) +#define smp_store_mb(var, va...

Changes since v2: - extended checkpatch tests for barriers, and added patches teaching it to warn about incorrect usage of barriers (__smp_xxx barriers are for use by asm-generic code only), should help prevent misuse by arch code to address comments by Russell King - patched more instances of xen to use virt_ barriers as suggested by Stefano Stabellini - implemented a 2 byte xchg on sh

Changes since v2: - extended checkpatch tests for barriers, and added patches teaching it to warn about incorrect usage of barriers (__smp_xxx barriers are for use by asm-generic code only), should help prevent misuse by arch code to address comments by Russell King - patched more instances of xen to use virt_ barriers as suggested by Stefano Stabellini - implemented a 2 byte xchg on sh

Changes since v1: - replaced my asm-generic patch with an equivalent patch already in tip - add wrappers with virt_ prefix for better code annotation, as suggested by David Miller - dropped XXX in patch names as this makes vger choke, Cc all relevant mailing lists on all patches (not personal email, as the list becomes too long then) I parked this in vhost tree for now, but the

Changes since v1: - replaced my asm-generic patch with an equivalent patch already in tip - add wrappers with virt_ prefix for better code annotation, as suggested by David Miller - dropped XXX in patch names as this makes vger choke, Cc all relevant mailing lists on all patches (not personal email, as the list becomes too long then) I parked this in vhost tree for now, but the