From: Oleksandr Natalenko <oleksandr@natalenko.name>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Matthew Wilcox <willy@infradead.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Miaohe Lin <linmiaohe@huawei.com>,
Michal Hocko <mhocko@kernel.org>,
Mel Gorman <mgorman@techsingularity.net>,
Stephen Rothwell <sfr@canb.auug.org.au>,
David Laight <David.Laight@ACULAB.COM>
Subject: [RFC v2 PATCH 1/3] mm: add PG2KB/KB2PG helper macros
Date: Sun, 19 Sep 2021 15:12:46 +0200 [thread overview]
Message-ID: <20210919131248.489798-2-oleksandr@natalenko.name> (raw)
In-Reply-To: <20210919131248.489798-1-oleksandr@natalenko.name>
Signed-off-by: Oleksandr Natalenko <oleksandr@natalenko.name>
---
include/linux/mm.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 00bb2d938df4..0a7e950ac8aa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -98,6 +98,9 @@ extern int mmap_rnd_compat_bits __read_mostly;
#include <asm/page.h>
#include <asm/processor.h>
+#define PG2KB(x) ((x) << (PAGE_SHIFT - 10))
+#define KB2PG(x) ((x) >> (PAGE_SHIFT - 10))
+
/*
* Architectures that support memory tagging (assigning tags to memory regions,
* embedding these tags into addresses that point to these memory regions, and
--
2.33.0
next prev parent reply other threads:[~2021-09-19 13:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-19 13:12 [RFC v2 PATCH 0/3] mm: common PAGE_SIZE shift macros Oleksandr Natalenko
2021-09-19 13:12 ` Oleksandr Natalenko [this message]
2021-09-19 13:21 ` [RFC v2 PATCH 1/3] mm: add PG2KB/KB2PG helper macros Greg Kroah-Hartman
2021-09-19 14:21 ` Matthew Wilcox
2021-09-19 13:12 ` [RFC v2 PATCH 2/3] mm: replace custom PG2KB/KB2PG macros with common ones Oleksandr Natalenko
2021-09-19 13:12 ` [RFC v2 PATCH 3/3] mm: replace open-coded PG2KB/KB2PG variants with macros Oleksandr Natalenko
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