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| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/include/asm/synch.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/powerpc/include/asm/synch.h')
| -rw-r--r-- | kernel/arch/powerpc/include/asm/synch.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/include/asm/synch.h b/kernel/arch/powerpc/include/asm/synch.h new file mode 100644 index 000000000..e682a7143 --- /dev/null +++ b/kernel/arch/powerpc/include/asm/synch.h @@ -0,0 +1,57 @@ +#ifndef _ASM_POWERPC_SYNCH_H +#define _ASM_POWERPC_SYNCH_H +#ifdef __KERNEL__ + +#include <linux/stringify.h> +#include <asm/feature-fixups.h> + +#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC) +#define __SUBARCH_HAS_LWSYNC +#endif + +#ifndef __ASSEMBLY__ +extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup; +extern void do_lwsync_fixups(unsigned long value, void *fixup_start, + void *fixup_end); +extern void do_final_fixups(void); + +static inline void eieio(void) +{ + __asm__ __volatile__ ("eieio" : : : "memory"); +} + +static inline void isync(void) +{ + __asm__ __volatile__ ("isync" : : : "memory"); +} +#endif /* __ASSEMBLY__ */ + +#if defined(__powerpc64__) +# define LWSYNC lwsync +#elif defined(CONFIG_E500) +# define LWSYNC \ + START_LWSYNC_SECTION(96); \ + sync; \ + MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup); +#else +# define LWSYNC sync +#endif + +#ifdef CONFIG_SMP +#define __PPC_ACQUIRE_BARRIER \ + START_LWSYNC_SECTION(97); \ + isync; \ + MAKE_LWSYNC_SECTION_ENTRY(97, __lwsync_fixup); +#define PPC_ACQUIRE_BARRIER "\n" stringify_in_c(__PPC_ACQUIRE_BARRIER) +#define PPC_RELEASE_BARRIER stringify_in_c(LWSYNC) "\n" +#define PPC_ATOMIC_ENTRY_BARRIER "\n" stringify_in_c(LWSYNC) "\n" +#define PPC_ATOMIC_EXIT_BARRIER "\n" stringify_in_c(sync) "\n" +#else +#define PPC_ACQUIRE_BARRIER +#define PPC_RELEASE_BARRIER +#define PPC_ATOMIC_ENTRY_BARRIER +#define PPC_ATOMIC_EXIT_BARRIER +#endif + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_SYNCH_H */ |