linux-kernel - [tip: x86/mm] x86/mm/pat: Clean up some of the local memtype_rb

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Date:   Thu, 21 Nov 2019 06:03:13 -0000
From:   "tip-bot2 for Davidlohr Bueso" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Davidlohr Bueso <dbueso@...e.de>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Rik van Riel <riel@...riel.com>,
        Thomas Gleixner <tglx@...utronix.de>, dave@...olabs.net,
        Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/mm] x86/mm/pat: Clean up some of the local memtype_rb_*() calls

The following commit has been merged into the x86/mm branch of tip:

Commit-ID:     3309be371c20275c346fe482767e2d11e29d732e
Gitweb:        https://git.kernel.org/tip/3309be371c20275c346fe482767e2d11e29d732e
Author:        Davidlohr Bueso <dave@...olabs.net>
AuthorDate:    Mon, 21 Oct 2019 16:19:22 -07:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Tue, 19 Nov 2019 09:08:42 +01:00

x86/mm/pat: Clean up some of the local memtype_rb_*() calls

Clean up by both getting rid of passing the rb_root down the helper
calls; there is only one. Secondly rename some of the calls still
using the now inaccurate memtype_rb_*() namespace.

Signed-off-by: Davidlohr Bueso <dbueso@...e.de>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Rik van Riel <riel@...riel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: dave@...olabs.net
Link: https://lkml.kernel.org/r/20191021231924.25373-3-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/mm/pat_rbtree.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
index 4998d69..7974136 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;
@@ -116,7 +114,7 @@ int rbt_memtype_check_insert(struct memtype *new,
 {
 	int err = 0;
 
-	err = memtype_rb_check_conflict(&memtype_rbroot, new->start, new->end,
+	err = memtype_check_conflict(new->start, new->end,
 					new->type, ret_type);
 	if (err)
 		goto done;
@@ -139,11 +137,9 @@ 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);
 	}