linux-kernel - [PATCH 1/4] mm/damon: simplify the parameter passing for 'prepare_access

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Date:   Tue, 13 Sep 2022 17:11:24 +0800
From:   xiakaixu1987@...il.com
To:     sj@...nel.org, akpm@...ux-foundation.org
Cc:     damon@...ts.linux.dev, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Kaixu Xia <kaixuxia@...cent.com>
Subject: [PATCH 1/4] mm/damon: simplify the parameter passing for 'prepare_access_checks'

From: Kaixu Xia <kaixuxia@...cent.com>

The parameter 'struct damon_ctx *ctx' isn't used in the functions
__damon_{p,v}a_prepare_access_check(), so we can remove it and
simplify the parameter passing.

Signed-off-by: Kaixu Xia <kaixuxia@...cent.com>
---
 mm/damon/paddr.c | 5 ++---
 mm/damon/vaddr.c | 6 +++---
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c
index 6b0d9e6aa677..f00cbe74a00e 100644
--- a/mm/damon/paddr.c
+++ b/mm/damon/paddr.c
@@ -63,8 +63,7 @@ static void damon_pa_mkold(unsigned long paddr)
 	folio_put(folio);
 }
 
-static void __damon_pa_prepare_access_check(struct damon_ctx *ctx,
-					    struct damon_region *r)
+static void __damon_pa_prepare_access_check(struct damon_region *r)
 {
 	r->sampling_addr = damon_rand(r->ar.start, r->ar.end);
 
@@ -78,7 +77,7 @@ static void damon_pa_prepare_access_checks(struct damon_ctx *ctx)
 
 	damon_for_each_target(t, ctx) {
 		damon_for_each_region(r, t)
-			__damon_pa_prepare_access_check(ctx, r);
+			__damon_pa_prepare_access_check(r);
 	}
 }
 
diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index c2c08c1b316b..39ea48d9cc15 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -397,8 +397,8 @@ static void damon_va_mkold(struct mm_struct *mm, unsigned long addr)
  * Functions for the access checking of the regions
  */
 
-static void __damon_va_prepare_access_check(struct damon_ctx *ctx,
-			struct mm_struct *mm, struct damon_region *r)
+static void __damon_va_prepare_access_check(struct mm_struct *mm,
+					struct damon_region *r)
 {
 	r->sampling_addr = damon_rand(r->ar.start, r->ar.end);
 
@@ -416,7 +416,7 @@ static void damon_va_prepare_access_checks(struct damon_ctx *ctx)
 		if (!mm)
 			continue;
 		damon_for_each_region(r, t)
-			__damon_va_prepare_access_check(ctx, mm, r);
+			__damon_va_prepare_access_check(mm, r);
 		mmput(mm);
 	}
 }
-- 
2.27.0