| commit | c0ba10b512eb2e2a3888b6e6cc0e089f5e7a191b | |
| author | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Sun, 21 Nov 2010 14:42:47 +0000 (21 14:42 +0000) | ||
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | |
| Sun, 21 Nov 2010 14:42:47 +0000 (21 14:42 +0000) | ||
| tree | a5e2ebdb4147df5653ce481a78465d28aa5b15c2 | treesnapshot (tar.gz zip) |
| parent | 589136bfa784a4558b397f017ca2f06f0ca9080e | commitdiff |
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>
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 | diffblobblamehistory |