diff options
| author |   Davidlohr Bueso <dave@stgolabs.net> | 2019-11-20 17:15:59 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2019-11-21 18:47:59 +0100 |
| commit | 6a9930b1c50d83facfa0f78e4f2f9ba0364f43f3 (patch) | |
| tree | ba4fee0f385d28d38b0becd218c41561c6773941 /arch | |
| parent | x86/mm/pat: Convert the PAT tree to a generic interval tree (diff) | |
| download | linux-dev-6a9930b1c50d83facfa0f78e4f2f9ba0364f43f3.tar.xz linux-dev-6a9930b1c50d83facfa0f78e4f2f9ba0364f43f3.zip | |
x86/mm/pat: Do not pass 'rb_root' down the memtype tree helper functions
Get rid of the passing the rb_root down the helper calls; there
is only one: &memtype_rbroot.
No change in functionality.
[ mingo: Fixed the changelog which described a different version of the patch. ]
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lkml.kernel.org/r/20191121011601.20611-3-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/pat_rbtree.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c index c3d119cd155d..d31ca773d4bb 100644 --- a/arch/x86/mm/pat_rbtree.c +++ b/arch/x86/mm/pat_rbtree.c @@ -52,12 +52,11 @@ enum { MEMTYPE_END_MATCH = 1 }; -static struct memtype *memtype_match(struct rb_root_cached *root, - u64 start, u64 end, int match_type) +static struct memtype *memtype_match(u64 start, u64 end, int match_type) { struct memtype *match; - match = memtype_interval_iter_first(root, start, end); + match = memtype_interval_iter_first(&memtype_rbroot, start, end); while (match != NULL && match->start < end) { if ((match_type == MEMTYPE_EXACT_MATCH) && (match->start == start) && (match->end == end)) @@ -73,10 +72,9 @@ static struct memtype *memtype_match(struct rb_root_cached *root, return NULL; /* Returns NULL if there is no match */ } -static int memtype_rb_check_conflict(struct rb_root_cached *root, - u64 start, u64 end, - enum page_cache_mode reqtype, - enum page_cache_mode *newtype) +static int memtype_check_conflict(u64 start, u64 end, + enum page_cache_mode reqtype, + enum page_cache_mode *newtype) { struct memtype *match; enum page_cache_mode found_type = reqtype; @@ -116,8 +114,7 @@ int rbt_memtype_check_insert(struct memtype *new, { int err = 0; - err = memtype_rb_check_conflict(&memtype_rbroot, new->start, new->end, - new->type, ret_type); + err = memtype_check_conflict(new->start, new->end, new->type, ret_type); if (err) return err; @@ -139,11 +136,9 @@ struct memtype *rbt_memtype_erase(u64 start, u64 end) * it then checks with END_MATCH, i.e. shrink the size of a node * from the end for the mremap case. */ - data = memtype_match(&memtype_rbroot, start, end, - MEMTYPE_EXACT_MATCH); + data = memtype_match(start, end, MEMTYPE_EXACT_MATCH); if (!data) { - data = memtype_match(&memtype_rbroot, start, end, - MEMTYPE_END_MATCH); + data = memtype_match(start, end, MEMTYPE_END_MATCH); if (!data) return ERR_PTR(-EINVAL); } |