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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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_
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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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unsigned long type;
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struct rb_node rb;
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};
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static inline char *cattr_name(unsigned long flags)
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{
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switch (flags & _PAGE_CACHE_MASK) {
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case _PAGE_CACHE_UC: return "uncached";
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case _PAGE_CACHE_UC_MINUS: return "uncached-minus";
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case _PAGE_CACHE_WB: return "write-back";
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case _PAGE_CACHE_WC: return "write-combining";
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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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unsigned long *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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unsigned long *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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