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From: "tip-bot2 for Peter Zijlstra" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: perf/core] mm: Introduce pXX_leaf_size()
Date: Thu, 03 Dec 2020 09:24:32 -0000	[thread overview]
Message-ID: <160698747295.3364.6132255453696965707.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20201126121121.102580109@infradead.org>

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     560dabbdf68bb15f9e241af8f828b1c8c38d6c6f
Gitweb:        https://git.kernel.org/tip/560dabbdf68bb15f9e241af8f828b1c8c38d6c6f
Author:        Peter Zijlstra <peterz@infradead.org>
AuthorDate:    Fri, 13 Nov 2020 11:45:36 +01:00
Committer:     Peter Zijlstra <peterz@infradead.org>
CommitterDate: Thu, 03 Dec 2020 10:14:50 +01:00

mm: Introduce pXX_leaf_size()

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

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

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lkml.kernel.org/r/20201126121121.102580109@infradead.org
---
 include/linux/pgtable.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index ed9266c..fefbbdb 100644
--- 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) (1ULL << PGDIR_SHIFT)
+#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:[~2020-12-03  9:25 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-26 12:01 [PATCH v2 0/6] perf/mm: Fix PERF_SAMPLE_*_PAGE_SIZE Peter Zijlstra
2020-11-26 12:01 ` [PATCH v2 1/6] mm/gup: Provide gup_get_pte() more generic Peter Zijlstra
2020-11-26 12:43   ` Matthew Wilcox
2020-11-26 13:02     ` Peter Zijlstra
2020-12-03  9:07   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-12-03  9:24   ` tip-bot2 for Peter Zijlstra
2020-11-26 12:01 ` [PATCH v2 2/6] mm: Introduce pXX_leaf_size() Peter Zijlstra
2020-11-26 12:43   ` Matthew Wilcox
2020-12-03  9:07   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-12-03  9:24   ` tip-bot2 for Peter Zijlstra [this message]
2020-11-26 12:01 ` [PATCH v2 3/6] perf/core: Fix arch_perf_get_page_size() Peter Zijlstra
2020-11-26 12:34   ` Matthew Wilcox
2020-11-26 12:42     ` Peter Zijlstra
2020-11-26 12:56       ` Matthew Wilcox
2020-11-26 13:06         ` Peter Zijlstra
2020-11-26 13:27           ` Matthew Wilcox
2020-12-03  9:07       ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-12-03  9:24       ` tip-bot2 for Peter Zijlstra
2020-11-26 12:01 ` [PATCH v2 4/6] arm64/mm: Implement pXX_leaf_size() support Peter Zijlstra
2020-11-26 12:57   ` Peter Zijlstra
2020-11-26 14:32     ` Will Deacon
2020-12-03  9:07     ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-12-03  9:24     ` tip-bot2 for Peter Zijlstra
2020-11-26 12:01 ` [PATCH v2 5/6] sparc64/mm: " Peter Zijlstra
2020-12-03  9:07   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-12-03  9:24   ` tip-bot2 for Peter Zijlstra
2020-12-09 18:44   ` tip-bot2 for Peter Zijlstra
2020-11-26 12:01 ` [PATCH v2 6/6] powerpc/8xx: " Peter Zijlstra
2020-12-03  9:07   ` [tip: perf/core] " tip-bot2 for Peter Zijlstra
2020-12-03  9:24   ` tip-bot2 for Peter Zijlstra
2020-12-09 18:44   ` tip-bot2 for Peter Zijlstra

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