e00c8cc93c
Instead of directly using the cache mode bits in the pte switch to using the cache mode type. Based-on-patch-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: stefan.bader@canonical.com Cc: xen-devel@lists.xensource.com Cc: konrad.wilk@oracle.com Cc: ville.syrjala@linux.intel.com Cc: david.vrabel@citrix.com Cc: jbeulich@suse.com Cc: toshi.kani@hp.com Cc: plagnioj@jcrosoft.com Cc: tomi.valkeinen@ti.com Cc: bhelgaas@google.com Link: http://lkml.kernel.org/r/1415019724-4317-14-git-send-email-jgross@suse.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
#ifndef __PAT_INTERNAL_H_
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#define __PAT_INTERNAL_H_
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extern int pat_debug_enable;
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#define dprintk(fmt, arg...) \
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do { if (pat_debug_enable) printk(KERN_INFO fmt, ##arg); } while (0)
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struct memtype {
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u64 start;
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u64 end;
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u64 subtree_max_end;
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enum page_cache_mode type;
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struct rb_node rb;
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};
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static inline char *cattr_name(enum page_cache_mode pcm)
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{
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switch (pcm) {
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case _PAGE_CACHE_MODE_UC: return "uncached";
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case _PAGE_CACHE_MODE_UC_MINUS: return "uncached-minus";
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case _PAGE_CACHE_MODE_WB: return "write-back";
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case _PAGE_CACHE_MODE_WC: return "write-combining";
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case _PAGE_CACHE_MODE_WT: return "write-through";
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case _PAGE_CACHE_MODE_WP: return "write-protected";
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default: return "broken";
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}
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}
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#ifdef CONFIG_X86_PAT
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extern int rbt_memtype_check_insert(struct memtype *new,
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enum page_cache_mode *new_type);
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extern struct memtype *rbt_memtype_erase(u64 start, u64 end);
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extern struct memtype *rbt_memtype_lookup(u64 addr);
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extern int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos);
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#else
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static inline int rbt_memtype_check_insert(struct memtype *new,
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enum page_cache_mode *new_type)
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{ return 0; }
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static inline struct memtype *rbt_memtype_erase(u64 start, u64 end)
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{ return NULL; }
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static inline struct memtype *rbt_memtype_lookup(u64 addr)
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{ return NULL; }
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static inline int rbt_memtype_copy_nth_element(struct memtype *out, loff_t pos)
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{ return 0; }
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#endif
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#endif /* __PAT_INTERNAL_H_ */
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