search for: __smp_xx

Hi Michael, On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > This defines __smp_xxx barriers for metag, > for use by virtualization. > > smp_xxx barriers are removed as they are > defined correctly by asm-generic/barriers.h > > Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not > use the existing fence() macro since that is defined diffe...

Hi Michael, On Thu, Dec 31, 2015 at 09:08:22PM +0200, Michael S. Tsirkin wrote: > This defines __smp_xxx barriers for metag, > for use by virtualization. > > smp_xxx barriers are removed as they are > defined correctly by asm-generic/barriers.h > > Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not > use the existing fence() macro since that is defined diffe...

This defines __smp_xxx barriers for metag, for use by virtualization. smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Note: as __smp_XX macros should not depend on CONFIG_SMP, they can not use the existing fence() macro since that is defined differently between SMP and !SMP. For t...

...def CONFIG_SMP #define smp_mb() __smp_mb() #else #define smp_mb() barrier() #endif This has the benefit of cleaning out a bunch of duplicated ifdefs on a bunch of architectures - this patchset brings about a net reduction in LOC, even with new barriers and extra documentation :) Then virt can use __smp_XXX when talking to an SMP host. To make those users explicit, this patchset adds virt_xxx wrappers for them. Touching all archs is a tad tedious, but its fairly straight forward. The rest of the patchset is structured as follows: -. Patch 1 fixes a bug in asm-generic. It is already in tip, inc...

...def CONFIG_SMP #define smp_mb() __smp_mb() #else #define smp_mb() barrier() #endif This has the benefit of cleaning out a bunch of duplicated ifdefs on a bunch of architectures - this patchset brings about a net reduction in LOC, even with new barriers and extra documentation :) Then virt can use __smp_XXX when talking to an SMP host. To make those users explicit, this patchset adds virt_xxx wrappers for them. Touching all archs is a tad tedious, but its fairly straight forward. The rest of the patchset is structured as follows: -. Patch 1 fixes a bug in asm-generic. It is already in tip, inc...

....h: #ifdef CONFIG_SMP #define smp_mb() __smp_mb() #else #define smp_mb() barrier() #endif This has the benefit of cleaning out a bunch of duplicated ifdefs on a bunch of architectures - this patchset brings about a net reduction in LOC, compensated for by extra documentation :) Then virt can use __smp_XXX when talking to an SMP host. Touching all archs is a tad tedious, but its fairly straight forward. The rest of the patchset is structured as follows: -. Patch 1 documents the __smp APIs, and explains why they are useful for virt -. Patches 2-7 makes sure barrier.h on ia64, powerpc, s390 and...

....h: #ifdef CONFIG_SMP #define smp_mb() __smp_mb() #else #define smp_mb() barrier() #endif This has the benefit of cleaning out a bunch of duplicated ifdefs on a bunch of architectures - this patchset brings about a net reduction in LOC, compensated for by extra documentation :) Then virt can use __smp_XXX when talking to an SMP host. Touching all archs is a tad tedious, but its fairly straight forward. The rest of the patchset is structured as follows: -. Patch 1 documents the __smp APIs, and explains why they are useful for virt -. Patches 2-7 makes sure barrier.h on ia64, powerpc, s390 and...

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 instead of hacking around it as suggested by...

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 instead of hacking around it as suggested by...