From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from invmail4.hynix.com (exvmail4.skhynix.com [166.125.252.92]) by smtp.subspace.kernel.org (Postfix) with ESMTP id AD396FC01 for ; Mon, 26 Feb 2024 03:06:31 +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=1708916795; cv=none; b=V2YAyWTw8Osr836PdO1BoPxoYfaHZhE5sntiGXUuz2jfPhNdBiNxnNN1sRm75P4AMBbqqmP1KkoEDtJZMJQfgy6r2OVDhG1kGRKRFGCgCsZgK+ntAHaR1FZXCs6CyvkooXociZ+4bZcgX40d1D5HXq2MxA3kpyNg8V+f35/KPaY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708916795; c=relaxed/simple; bh=uWSWIWkD3opthclWyKeivuFFBZgLyDaadr0FCXFpy+I=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=G+60qpCepKxy8Zp/Z3gcQFyJKpXk3tstJOAEAnYIkesEP1V5fUBBSspsMjl5tkFQjAIr51oxaxqbAla+cbYsmy06GNeuNEzRzjAjgbWSkBy9849aGbPaALMVMSU0knYdRw3V06ZLijKsI7errSp7IYMZ9B31ep8KkfxH35iwFaY= 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-d6dff70000001748-2d-65dc002fe326 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, 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 v8 2/8] arm64: tlbflush: Add APIs manipulating tlb batch's arch data Date: Mon, 26 Feb 2024 12:06:07 +0900 Message-Id: <20240226030613.22366-3-byungchul@sk.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240226030613.22366-1-byungchul@sk.com> References: <20240226030613.22366-1-byungchul@sk.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrCLMWRmVeSWpSXmKPExsXC9ZZnoa4+w51Ug5Z+c4s569ewWXze8I/N 4sWGdkaLr+t/MVs8/dTHYnF51xw2i3tr/rNanN+1ltVix9J9TBaXDixgsjjee4DJYv69z2wW mzdNZbY4PmUqo8XvH0DFJ2dNZnEQ8Pje2sfisXPWXXaPBZtKPTav0PJYvOclk8emVZ1sHps+ TWL3eHfuHLvHiRm/WTzmnQz0eL/vKpvH1l92Ho1Tr7F5fN4kF8AXxWWTkpqTWZZapG+XwJWx p+8he8FsropN79vZGhj3cnQxcnJICJhI3Ph3i6mLkQPM/jTZByTMJqAucePGT2YQW0TATOJg 6x92EJtZ4C6TxIF+NhBbWCBa4umBvWA2i4CqxI9ZE8FsXgFTict/D7BCjJeXWL3hADPIeE6g Oe//G4KEhYBK/vZeZexi5AIq+cwmcX7rOkaIekmJgytusExg5F3AyLCKUSgzryw3MTPHRC+j Mi+zQi85P3cTIzDsl9X+id7B+OlC8CFGAQ5GJR7eBR9upwqxJpYVV+YeYpTgYFYS4Q2XuZkq xJuSWFmVWpQfX1Sak1p8iFGag0VJnNfoW3mKkEB6YklqdmpqQWoRTJaJg1OqgbH8WUAjB4/K pUTN84drxJa9qvKJkwto/LJfe9OESZlTM89eUDnZtPN+8MVLv53und/BNE+FaWPktqmzWvLm P5cJrHsYckXSVjpGtkQuM0ZQgSHq+s1tMQptAl9nni1YbyNauPLK04TrlnOLvz4wtLp8yHWh kqz6jhusn3ii57kJiHndyyg5+kWJpTgj0VCLuag4EQCxiRetdwIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNLMWRmVeSWpSXmKPExsXC5WfdrKvPcCfV4Nh/bYs569ewWXze8I/N 4sWGdkaLr+t/MVs8/dTHYnF47klWi8u75rBZ3Fvzn9Xi/K61rBY7lu5jsrh0YAGTxfHeA0wW 8+99ZrPYvGkqs8XxKVMZLX7/ACo+OWsyi4Ogx/fWPhaPnbPusnss2FTqsXmFlsfiPS+ZPDat 6mTz2PRpErvHu3Pn2D1OzPjN4jHvZKDH+31X2TwWv/jA5LH1l51H49RrbB6fN8kF8Edx2aSk 5mSWpRbp2yVwZezpe8heMJurYtP7drYGxr0cXYwcHBICJhKfJvt0MXJysAmoS9y48ZMZxBYR MJM42PqHHcRmFrjLJHGgnw3EFhaIlnh6YC+YzSKgKvFj1kQwm1fAVOLy3wOsILaEgLzE6g0H mEHGcwLNef/fECQsBFTyt/cq4wRGrgWMDKsYRTLzynITM3NM9YqzMyrzMiv0kvNzNzECg3hZ 7Z+JOxi/XHY/xCjAwajEw7vgw+1UIdbEsuLK3EOMEhzMSiK84TI3U4V4UxIrq1KL8uOLSnNS iw8xSnOwKInzeoWnJggJpCeWpGanphakFsFkmTg4pRoYbZdFV7/+3CLisHb1f6N//JvnLtg7 8fL8E5WxHUc2Xb/Vk1retuX/8+tGqjkl/moNHc/2Hn69e8evYI6NrVU8Oj+sXV7y9r0VMQo2 OqHe2u1qXuQqz/7u5OoL/wXmfNh/+pX1I6Xn7SUB8oX37i9q16jYrT3137HYE1/aNRU8LKOu Png5ZWb4ZyWW4oxEQy3mouJEALEqOqReAgAA X-CFilter-Loop: Reflected Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: This is a preparation for migrc mechanism that requires to manipulate tlb batch's arch data. Even though arm64 does nothing with it, arch with CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH should provide the APIs. Signed-off-by: Byungchul Park --- arch/arm64/include/asm/tlbflush.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index bb2c2833a987..4f2094843e7a 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -328,6 +328,25 @@ static inline void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch) dsb(ish); } +static inline void arch_tlbbatch_clear(struct arch_tlbflush_unmap_batch *batch) +{ + /* nothing to do */ +} + +static inline void arch_tlbbatch_fold(struct arch_tlbflush_unmap_batch *bdst, + struct arch_tlbflush_unmap_batch *bsrc) +{ + /* nothing to do */ +} + +static inline bool arch_tlbbatch_done(struct arch_tlbflush_unmap_batch *bdst, + struct arch_tlbflush_unmap_batch *bsrc) +{ + /* nothing to do */ + + return false; +} + /* * This is meant to avoid soft lock-ups on large TLB flushing ranges and not * necessarily a performance improvement. -- 2.17.1