summaryrefslogtreecommitdiff
path: root/arch/x86/mm/pat_internal.h
AgeCommit message (Collapse)Author
2010-05-26x86, pat: Fix memory leak in free_memtypeXiaotian Feng
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>
2010-02-18x86, pat: Migrate to rbtree only backend for pat memtype managementPallipadi, Venkatesh
Move pat backend to fully rbtree based implementation from the existing rbtree and linked list hybrid. New rbtree based solution uses interval trees (augmented rbtrees) in order to store the PAT ranges. The new code seprates out the pat backend to pat_rbtree.c file, making is cleaner. The change also makes the PAT lookup, reserve and free operations more optimal, as we don't have to traverse linear linked list of few tens of entries in normal case. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20100210232607.GB11465@linux-os.sc.intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-18x86, pat: Preparatory changes in pat.c for bigger rbtree changevenkatesh.pallipadi@intel.com
Minor changes in pat.c to cleanup code and make it smoother to introduce bigger rbtree only change in the following patch. The changes are cleaup only and should not have any functional impact. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20100210195909.792781000@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>