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(parent: 589136b) | patch
ARM: improve compiler's ability to optimize page tables
authorRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 21 Nov 2010 14:42:47 +0000 (14:42 +0000)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Sun, 21 Nov 2010 14:42:47 +0000 (14:42 +0000)
commitc0ba10b512eb2e2a3888b6e6cc0e089f5e7a191b
treea5e2ebdb4147df5653ce481a78465d28aa5b15c2tree | snapshot
parent589136bfa784a4558b397f017ca2f06f0ca9080ecommit | diff
ARM: improve compiler's ability to optimize page tables

Allow the compiler to better optimize the page table walking code
by avoiding over-complex pmd_addr_end() calculations.  These
calculations prevent the compiler spotting that we'll never iterate
over the PMD table, causing it to create double nested loops where
a single loop will do.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/include/asm/pgtable.h diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git