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From: Peter Zijlstra <peterz@infradead.org>
To: kan.liang@linux.intel.com, mingo@kernel.org, acme@kernel.org,
	mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
	jolsa@redhat.com, eranian@google.com
Cc: christophe.leroy@csgroup.eu, npiggin@gmail.com,
	linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au,
	will@kernel.org, willy@infradead.org, aneesh.kumar@linux.ibm.com,
	sparclinux@vger.kernel.org, davem@davemloft.net,
	catalin.marinas@arm.com, linux-arch@vger.kernel.org,
	linux-kernel@vger.kernel.org, ak@linux.intel.com,
	dave.hansen@intel.com, kirill.shutemov@linux.intel.com,
	peterz@infradead.org
Subject: [PATCH 2/5] mm: Introduce pXX_leaf_size()
Date: Fri, 13 Nov 2020 12:19:03 +0100	[thread overview]
Message-ID: <20201113113426.465239104@infradead.org> (raw)
In-Reply-To: 20201113111901.743573013@infradead.org

A number of architectures have non-pagetable aligned huge/large pages.
For such architectures a leaf can actually be part of a larger TLB
entry.

Provide generic helpers to determine the TLB size of a page-table
leaf.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 include/linux/pgtable.h |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1536,4 +1536,20 @@ typedef unsigned int pgtbl_mod_mask;
 #define pmd_leaf(x)	0
 #endif
 
+#ifndef pgd_leaf_size
+#define pgd_leaf_size(x) PGD_SIZE
+#endif
+#ifndef p4d_leaf_size
+#define p4d_leaf_size(x) P4D_SIZE
+#endif
+#ifndef pud_leaf_size
+#define pud_leaf_size(x) PUD_SIZE
+#endif
+#ifndef pmd_leaf_size
+#define pmd_leaf_size(x) PMD_SIZE
+#endif
+#ifndef pte_leaf_size
+#define pte_leaf_size(x) PAGE_SIZE
+#endif
+
 #endif /* _LINUX_PGTABLE_H */



WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: kan.liang@linux.intel.com, mingo@kernel.org, acme@kernel.org,
	mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
	jolsa@redhat.com, eranian@google.com
Cc: christophe.leroy@csgroup.eu, npiggin@gmail.com,
	linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au,
	will@kernel.org, willy@infradead.org, aneesh.kumar@linux.ibm.com,
	sparclinux@vger.kernel.org, davem@davemloft.net,
	catalin.marinas@arm.com, linux-arch@vger.kernel.org,
	linux-kernel@vger.kernel.org, ak@linux.intel.com,
	dave.hansen@intel.com, kirill.shutemov@linux.intel.com,
	peterz@infradead.org
Subject: [PATCH 2/5] mm: Introduce pXX_leaf_size()
Date: Fri, 13 Nov 2020 11:19:03 +0000	[thread overview]
Message-ID: <20201113113426.465239104@infradead.org> (raw)
In-Reply-To: 20201113111901.743573013@infradead.org

A number of architectures have non-pagetable aligned huge/large pages.
For such architectures a leaf can actually be part of a larger TLB
entry.

Provide generic helpers to determine the TLB size of a page-table
leaf.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 include/linux/pgtable.h |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1536,4 +1536,20 @@ typedef unsigned int pgtbl_mod_mask;
 #define pmd_leaf(x)	0
 #endif
 
+#ifndef pgd_leaf_size
+#define pgd_leaf_size(x) PGD_SIZE
+#endif
+#ifndef p4d_leaf_size
+#define p4d_leaf_size(x) P4D_SIZE
+#endif
+#ifndef pud_leaf_size
+#define pud_leaf_size(x) PUD_SIZE
+#endif
+#ifndef pmd_leaf_size
+#define pmd_leaf_size(x) PMD_SIZE
+#endif
+#ifndef pte_leaf_size
+#define pte_leaf_size(x) PAGE_SIZE
+#endif
+
 #endif /* _LINUX_PGTABLE_H */

WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: kan.liang@linux.intel.com, mingo@kernel.org, acme@kernel.org,
	mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
	jolsa@redhat.com, eranian@google.com
Cc: linux-arch@vger.kernel.org, ak@linux.intel.com,
	catalin.marinas@arm.com, peterz@infradead.org,
	linuxppc-dev@lists.ozlabs.org, willy@infradead.org,
	linux-kernel@vger.kernel.org, dave.hansen@intel.com,
	npiggin@gmail.com, aneesh.kumar@linux.ibm.com,
	sparclinux@vger.kernel.org, will@kernel.org, davem@davemloft.net,
	kirill.shutemov@linux.intel.com
Subject: [PATCH 2/5] mm: Introduce pXX_leaf_size()
Date: Fri, 13 Nov 2020 12:19:03 +0100	[thread overview]
Message-ID: <20201113113426.465239104@infradead.org> (raw)
In-Reply-To: 20201113111901.743573013@infradead.org

A number of architectures have non-pagetable aligned huge/large pages.
For such architectures a leaf can actually be part of a larger TLB
entry.

Provide generic helpers to determine the TLB size of a page-table
leaf.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 include/linux/pgtable.h |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1536,4 +1536,20 @@ typedef unsigned int pgtbl_mod_mask;
 #define pmd_leaf(x)	0
 #endif
 
+#ifndef pgd_leaf_size
+#define pgd_leaf_size(x) PGD_SIZE
+#endif
+#ifndef p4d_leaf_size
+#define p4d_leaf_size(x) P4D_SIZE
+#endif
+#ifndef pud_leaf_size
+#define pud_leaf_size(x) PUD_SIZE
+#endif
+#ifndef pmd_leaf_size
+#define pmd_leaf_size(x) PMD_SIZE
+#endif
+#ifndef pte_leaf_size
+#define pte_leaf_size(x) PAGE_SIZE
+#endif
+
 #endif /* _LINUX_PGTABLE_H */



  parent reply	other threads:[~2020-11-13 12:04 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-13 11:19 [PATCH 0/5] perf/mm: Fix PERF_SAMPLE_*_PAGE_SIZE Peter Zijlstra
2020-11-13 11:19 ` Peter Zijlstra
2020-11-13 11:19 ` Peter Zijlstra
2020-11-13 11:19 ` [PATCH 1/5] mm/gup: Provide gup_get_pte() more generic Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:19 ` Peter Zijlstra [this message]
2020-11-13 11:19   ` [PATCH 2/5] mm: Introduce pXX_leaf_size() Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:45   ` Peter Zijlstra
2020-11-13 11:45     ` Peter Zijlstra
2020-11-13 11:45     ` Peter Zijlstra
2020-11-13 11:19 ` [PATCH 3/5] perf/core: Fix arch_perf_get_page_size() Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-16 13:11   ` Liang, Kan
2020-11-16 13:11     ` Liang, Kan
2020-11-16 13:11     ` Liang, Kan
2020-11-13 11:19 ` [PATCH 4/5] arm64/mm: Implement pXX_leaf_size() support Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:19 ` [PATCH 5/5] sparc64/mm: " Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 11:19   ` Peter Zijlstra
2020-11-13 13:44 ` [PATCH 0/5] perf/mm: Fix PERF_SAMPLE_*_PAGE_SIZE Christophe Leroy
2020-11-13 13:44   ` Christophe Leroy
2020-11-13 13:44   ` Christophe Leroy
2020-11-20 11:18   ` Christophe Leroy
2020-11-20 11:18     ` Christophe Leroy
2020-11-20 11:18     ` Christophe Leroy
2020-11-20 12:20     ` Peter Zijlstra
2020-11-20 12:20       ` Peter Zijlstra
2020-11-20 12:20       ` Peter Zijlstra
2020-11-26 10:46       ` Peter Zijlstra
2020-11-26 10:46         ` Peter Zijlstra
2020-11-26 10:46         ` Peter Zijlstra
2020-11-16 15:43 ` Kirill A. Shutemov
2020-11-16 15:43   ` Kirill A. Shutemov
2020-11-16 15:43   ` Kirill A. Shutemov
2020-11-16 15:54   ` Matthew Wilcox
2020-11-16 15:54     ` Matthew Wilcox
2020-11-16 16:28     ` Dave Hansen
2020-11-16 16:28       ` Dave Hansen
2020-11-16 16:28       ` Dave Hansen
2020-11-16 16:32       ` Matthew Wilcox
2020-11-16 16:32         ` Matthew Wilcox
2020-11-16 16:36         ` Dave Hansen
2020-11-16 16:36           ` Dave Hansen
2020-11-16 16:36           ` Dave Hansen
2020-11-16 16:57           ` Peter Zijlstra
2020-11-16 16:57             ` Peter Zijlstra
2020-11-16 16:57             ` Peter Zijlstra
2020-11-16 16:55       ` Peter Zijlstra
2020-11-16 16:55         ` Peter Zijlstra
2020-11-16 16:55         ` Peter Zijlstra

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