20413f2716
Reserve_memtype will allocate memory for new memtype, but in free_memtype, after the memtype erased from rbtree, the memory is not freed. Changes since V1: make rbt_memtype_erase return erased memtype so that it can be freed in free_memtype. [ hpa: not for -stable: 2.6.34 and earlier not affected ] Signed-off-by: Xiaotian Feng <dfeng@redhat.com> LKML-Reference: <1274838670-8731-1-git-send-email-dfeng@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Jack Steiner <steiner@sgi.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#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;
|
|
unsigned long type;
|
|
struct rb_node rb;
|
|
};
|
|
|
|
static inline char *cattr_name(unsigned long flags)
|
|
{
|
|
switch (flags & _PAGE_CACHE_MASK) {
|
|
case _PAGE_CACHE_UC: return "uncached";
|
|
case _PAGE_CACHE_UC_MINUS: return "uncached-minus";
|
|
case _PAGE_CACHE_WB: return "write-back";
|
|
case _PAGE_CACHE_WC: return "write-combining";
|
|
default: return "broken";
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_X86_PAT
|
|
extern int rbt_memtype_check_insert(struct memtype *new,
|
|
unsigned long *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,
|
|
unsigned long *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_ */
|