From: Kairui Song <ryncsn@gmail.com>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Kairui Song <kasong@tencent.com>
Subject: [RFC PATCH 5/7] mm: try use fast path for pmd setting as well
Date: Fri, 29 Jul 2022 04:45:09 +0800 [thread overview]
Message-ID: <20220728204511.56348-6-ryncsn@gmail.com> (raw)
In-Reply-To: <20220728204511.56348-1-ryncsn@gmail.com>
From: Kairui Song <kasong@tencent.com>
Use the per-CPU RSS cache helper as much as possible.
Signed-off-by: Kairui Song <kasong@tencent.com>
---
mm/memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/memory.c b/mm/memory.c
index f00f302143b6..09d7d193da51 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4419,7 +4419,7 @@ vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page)
if (write)
entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
- add_mm_counter(vma->vm_mm, mm_counter_file(page), HPAGE_PMD_NR);
+ add_mm_counter_fast(vma->vm_mm, mm_counter_file(page), HPAGE_PMD_NR);
page_add_file_rmap(page, vma, true);
/*
--
2.35.2
next prev parent reply other threads:[~2022-07-28 20:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-28 20:45 [RFC PATCH 0/7] Replace per-task RSS cache with per-CPU RSS cache Kairui Song
2022-07-28 20:45 ` [RFC PATCH 1/7] mm: remove the per-task RSS counter cache Kairui Song
2022-07-28 20:45 ` [RFC PATCH 2/7] mm: move check_mm to memory.c Kairui Song
2022-07-28 20:45 ` [RFC PATCH 3/7] mm/headers: change emun order of MM_COUNTERS Kairui Song
2022-07-28 20:45 ` [RFC PATCH 4/7] mm: introduce a generic per-CPU RSS cache Kairui Song
2022-07-28 20:45 ` Kairui Song [this message]
2022-07-28 20:45 ` [RFC PATCH 6/7] mm: introduce CONFIG_ARCH_PCP_RSS_USE_CPUMASK Kairui Song
2022-07-28 20:45 ` [RFC PATCH 7/7] x86_64/tlb, mm: enable cpumask optimzation for RSS cache Kairui Song
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