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From: Zhenyu Ye <yezhenyu2@huawei.com>
To: <peterz@infradead.org>, <mark.rutland@arm.com>, <will@kernel.org>,
	<catalin.marinas@arm.com>, <aneesh.kumar@linux.ibm.com>,
	<akpm@linux-foundation.org>, <npiggin@gmail.com>, <arnd@arndb.de>,
	<rostedt@goodmis.org>, <maz@kernel.org>, <suzuki.poulose@arm.com>,
	<tglx@linutronix.de>, <yuzhao@google.com>, <Dave.Martin@arm.com>,
	<steven.price@arm.com>, <broonie@kernel.org>,
	<guohanjun@huawei.com>, <corbet@lwn.net>, <vgupta@synopsys.com>,
	<tony.luck@intel.com>
Cc: <yezhenyu2@huawei.com>, <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-arch@vger.kernel.org>,
	<linux-mm@kvack.org>, <arm@kernel.org>, <xiexiangyou@huawei.com>,
	<prime.zeng@hisilicon.com>, <zhangshaokun@hisilicon.com>,
	<kuhn.chenqun@huawei.com>
Subject: [RFC PATCH v5 5/8] mm: tlb: Pass struct mmu_gather to flush_pud_tlb_range
Date: Tue, 31 Mar 2020 22:29:24 +0800	[thread overview]
Message-ID: <20200331142927.1237-6-yezhenyu2@huawei.com> (raw)
In-Reply-To: <20200331142927.1237-1-yezhenyu2@huawei.com>

Preparations to support for passing struct mmu_gather to
flush_tlb_range.  See in future patches.

Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com>
---
 include/asm-generic/pgtable.h | 4 ++--
 mm/pgtable-generic.c          | 8 +++++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 32d4661e5a56..1c67a744877e 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -1161,10 +1161,10 @@ static inline int pmd_free_pte_page(pmd_t *pmd, unsigned long addr)
  * e.g. see arch/arc: flush_pmd_tlb_range
  */
 #define flush_pmd_tlb_range(tlb, vma, addr, end)	flush_tlb_range(vma, addr, end)
-#define flush_pud_tlb_range(vma, addr, end)	flush_tlb_range(vma, addr, end)
+#define flush_pud_tlb_range(tlb, vma, addr, end)	flush_tlb_range(vma, addr, end)
 #else
 #define flush_pmd_tlb_range(tlb, vma, addr, end)	BUILD_BUG()
-#define flush_pud_tlb_range(vma, addr, end)	BUILD_BUG()
+#define flush_pud_tlb_range(tlb, vma, addr, end)	BUILD_BUG()
 #endif
 #endif
 
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index 96c9cf77bfb5..9ab9d8f698ea 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -166,11 +166,17 @@ pud_t pudp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
 			    pud_t *pudp)
 {
 	pud_t pud;
+	struct mmu_gather tlb;
+	unsigned long tlb_start = address;
+	unsigned long tlb_end = address + HPAGE_PUD_SIZE;
 
 	VM_BUG_ON(address & ~HPAGE_PUD_MASK);
 	VM_BUG_ON(!pud_trans_huge(*pudp) && !pud_devmap(*pudp));
 	pud = pudp_huge_get_and_clear(vma->vm_mm, address, pudp);
-	flush_pud_tlb_range(vma, address, address + HPAGE_PUD_SIZE);
+	tlb_gather_mmu(&tlb, vma->vm_mm, tlb_start, tlb_end);
+	tlb.cleared_puds = 1;
+	flush_pud_tlb_range(&tlb, vma, tlb_start, tlb_end);
+	tlb_finish_mmu(&tlb, tlb_start, tlb_end);
 	return pud;
 }
 #endif
-- 
2.19.1



  parent reply	other threads:[~2020-03-31 14:30 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-31 14:29 [RFC PATCH v5 0/8] arm64: tlb: add support for TTL feature Zhenyu Ye
2020-03-31 14:29 ` [RFC PATCH v5 1/8] arm64: Detect the ARMv8.4 " Zhenyu Ye
2020-03-31 14:29 ` [RFC PATCH v5 2/8] arm64: Add level-hinted TLB invalidation helper Zhenyu Ye
2020-03-31 14:29 ` [RFC PATCH v5 3/8] arm64: Add tlbi_user_level " Zhenyu Ye
2020-03-31 14:29 ` [RFC PATCH v5 4/8] mm: tlb: Pass struct mmu_gather to flush_pmd_tlb_range Zhenyu Ye
2020-03-31 15:13   ` Peter Zijlstra
2020-04-01  8:51     ` Zhenyu Ye
2020-04-01 12:20       ` Peter Zijlstra
2020-04-02 11:24         ` Zhenyu Ye
2020-04-02 16:38           ` Peter Zijlstra
2020-04-03  5:14             ` Zhenyu Ye
2020-04-08  9:00               ` Zhenyu Ye
2020-03-31 14:29 ` Zhenyu Ye [this message]
2020-03-31 14:29 ` [RFC PATCH v5 6/8] mm: tlb: Pass struct mmu_gather to flush_hugetlb_tlb_range Zhenyu Ye
2020-03-31 14:29 ` [RFC PATCH v5 7/8] mm: tlb: Pass struct mmu_gather to flush_tlb_range Zhenyu Ye
2020-03-31 14:29 ` [RFC PATCH v5 8/8] arm64: tlb: Set the TTL field in flush_tlb_range Zhenyu Ye

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