diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/x86/mm/pat_internal.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/x86/mm/pat_internal.h')
-rw-r--r-- | kernel/arch/x86/mm/pat_internal.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/kernel/arch/x86/mm/pat_internal.h b/kernel/arch/x86/mm/pat_internal.h new file mode 100644 index 000000000..f64116203 --- /dev/null +++ b/kernel/arch/x86/mm/pat_internal.h @@ -0,0 +1,48 @@ +#ifndef __PAT_INTERNAL_H_ +#define __PAT_INTERNAL_H_ + +extern int pat_debug_enable; + +#define dprintk(fmt, arg...) \ + do { if (pat_debug_enable) printk(KERN_INFO fmt, ##arg); } while (0) + +struct memtype { + u64 start; + u64 end; + u64 subtree_max_end; + enum page_cache_mode type; + struct rb_node rb; +}; + +static inline char *cattr_name(enum page_cache_mode pcm) +{ + switch (pcm) { + case _PAGE_CACHE_MODE_UC: return "uncached"; + case _PAGE_CACHE_MODE_UC_MINUS: return "uncached-minus"; + case _PAGE_CACHE_MODE_WB: return "write-back"; + case _PAGE_CACHE_MODE_WC: return "write-combining"; + case _PAGE_CACHE_MODE_WT: return "write-through"; + case _PAGE_CACHE_MODE_WP: return "write-protected"; + default: return "broken"; + } +} + +#ifdef CONFIG_X86_PAT +extern int rbt_memtype_check_insert(struct memtype *new, + enum page_cache_mode *new_type); +extern struct memtype *rbt_memtype_erase(u64 start, u64 end); +extern struct memtype *rbt_memtype_lookup(u64 addr); +extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos); +#else +static inline int rbt_memtype_check_insert(struct memtype *new, + enum page_cache_mode *new_type) +{ return 0; } +static inline struct memtype *rbt_memtype_erase(u64 start, u64 end) +{ return NULL; } +static inline struct memtype *rbt_memtype_lookup(u64 addr) +{ return NULL; } +static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos) +{ return 0; } +#endif + +#endif /* __PAT_INTERNAL_H_ */ |