From nobody Mon Feb 9 23:16:09 2026 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 04CB367E78 for ; Thu, 8 Feb 2024 06:26:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=166.125.252.92 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707373589; cv=none; b=DytJG99ZsCXCwph6eafBuYKNHJVIBpQRoJhtq2556wCVymYics5yAo0K3LNPJOF9VCHWQDtU8iECx6OnuMkkqIR1Hc4KWp1y9dBeP0rgNDEwMBc7fJnyzxNHAYm1n47y8UhuM284m2B7RpNh8UHRU9n+FUzbm2BYjM2DnCtV5jU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707373589; c=relaxed/simple; bh=o7dB2cnQ4DdAIbh4UuP8+5q3qGaOJJ7booLY7nqK98M=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=CME3MiiG7BIsUyFB6tqzAYUNBcEP3KDBq61nkpk0KJSibbuejffSi8+3BafiWmbNXm441YC2pGa3XpmhCr7cTUqmLG1VYdQzQA9HK/es8mP914/paVMEwly7Yl7kdsNrIYdZ6+lUY26Nd35BOSoOlazduhZpn5tZx7HrTJLWgJ0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-d85ff70000001748-81-65c4740bb40b From: Byungchul Park To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: kernel_team@skhynix.com, akpm@linux-foundation.org, ying.huang@intel.com, namit@vmware.com, vernhao@tencent.com, mgorman@techsingularity.net, hughd@google.com, willy@infradead.org, david@redhat.com, peterz@infradead.org, luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, rjgolo@gmail.com Subject: [RESEND PATCH v7 4/8] x86/tlb, mm/rmap: Separate arch_tlbbatch_clear() out of arch_tlbbatch_flush() Date: Thu, 8 Feb 2024 15:26:04 +0900 Message-Id: <20240208062608.44351-5-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240208062608.44351-1-byungchul@sk.com> References: <20240208062608.44351-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrILMWRmVeSWpSXmKPExsXC9ZZnkS53yZFUg6sTRCzmrF/DZvF5wz82 ixcb2hktvq7/xWzx9FMfi8XlXXPYLO6t+c9qcX7XWlaLHUv3MVlcOrCAyeL6roeMFsd7DzBZ zL/3mc1i86apzBbHp0xltPj9A6jj5KzJLA6CHt9b+1g8ds66y+6xYFOpx+YVWh6L97xk8ti0 qpPNY9OnSewe786dY/c4MeM3i8e8k4Ee7/ddZfPY+svOo3HqNTaPz5vkPN7Nf8sWwB/FZZOS mpNZllqkb5fAlXH0zj22gjmcFed/TWVqYLzE3sXIySEhYCJx+tMfJhj7V/cfRhCbTUBd4saN n8wgtoiAmcTB1j9A9VwczAIfmSRWf+9gAUkIC+RI3GxfzQZiswioSsy8/wVsEK+AqUTr4llQ C+QlVm84ADaIE2jQzm2nWEFsIaCaF7Mns4EMlRBoZpc43/2AFaJBUuLgihssExh5FzAyrGIU yswry03MzDHRy6jMy6zQS87P3cQIjIhltX+idzB+uhB8iFGAg1GJh/dE+eFUIdbEsuLK3EOM EhzMSiK8ZjsOpArxpiRWVqUW5ccXleakFh9ilOZgURLnNfpWniIkkJ5YkpqdmlqQWgSTZeLg lGpgrBbt0RY0jZkcrlj/5bQdd4ZCSlPp27eLvBNfZcySEfFXjprSckDqmj13kNHrNZN28/m1 rY8wb/36tfgux8cff+ax7LAXLqt6tFBGrTlFQW311FdR5eYKV6Ynpe273VAZ5NL7WvrOyf6U Wyzf/Uw0xHavtjhb9fnhM9UqSd2bL6QvBXTv1lurxFKckWioxVxUnAgAhBx77oQCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrBLMWRmVeSWpSXmKPExsXC5WfdrMtdciTVYOs8Dos569ewWXze8I/N 4sWGdkaLr+t/MVs8/dTHYnF47klWi8u75rBZ3Fvzn9Xi/K61rBY7lu5jsrh0YAGTxfVdDxkt jvceYLKYf+8zm8XmTVOZLY5Pmcpo8fsHUMfJWZNZHIQ8vrf2sXjsnHWX3WPBplKPzSu0PBbv ecnksWlVJ5vHpk+T2D3enTvH7nFixm8Wj3knAz3e77vK5rH4xQcmj62/7Dwap15j8/i8Sc7j 3fy3bAECUVw2Kak5mWWpRfp2CVwZR+/cYyuYw1lx/tdUpgbGS+xdjJwcEgImEr+6/zCC2GwC 6hI3bvxkBrFFBMwkDrb+Aarh4mAW+Mgksfp7BwtIQlggR+Jm+2o2EJtFQFVi5v0vTCA2r4Cp ROviWVBD5SVWbzgANogTaNDObadYQWwhoJoXsyezTWDkWsDIsIpRJDOvLDcxM8dUrzg7ozIv s0IvOT93EyMwvJfV/pm4g/HLZfdDjAIcjEo8vCfKD6cKsSaWFVfmHmKU4GBWEuE123EgVYg3 JbGyKrUoP76oNCe1+BCjNAeLkjivV3hqgpBAemJJanZqakFqEUyWiYNTqoFRTPr95sd1S8w9 LZq/r75bdG7CWt+PyyTdnzM9n83+wamJT/v/NuMazwTNLbtd1wp22HY/fvghbF7crN8mU+9m Oq99Lzvv1Lo97Iea9mW8TUnIKVAN276tXve9odtFlun84o9f/smb82Vl6leeQrenDzqXeW0x r1kxO6y9fY1QpDXPdb0m2zdMSizFGYmGWsxFxYkAJNj2imsCAAA= X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This is a preparation for migrc mechanism that requires to avoid redundant TLB flushes by manipulating tlb batch's arch data after arch_tlbbatch_flush(). However, we cannot because the data is getting cleared inside arch_tlbbatch_flush(). So separated the part clearing the tlb batch's arch data out of arch_tlbbatch_flush(). Signed-off-by: Byungchul Park --- arch/x86/mm/tlb.c | 2 -- mm/rmap.c | 1 + 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 453ea95b667d..941f41df02f3 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -1268,8 +1268,6 @@ void arch_tlbbatch_flush(struct arch_tlbflush_unmap_b= atch *batch) local_irq_enable(); } =20 - cpumask_clear(&batch->cpumask); - put_flush_tlb_info(); put_cpu(); } diff --git a/mm/rmap.c b/mm/rmap.c index da36f23ff7b0..b484d659d0c1 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -643,6 +643,7 @@ void try_to_unmap_flush(void) return; =20 arch_tlbbatch_flush(&tlb_ubc->arch); + arch_tlbbatch_clear(&tlb_ubc->arch); tlb_ubc->flush_required =3D false; tlb_ubc->writable =3D false; } --=20 2.17.1