| Message ID | 20210225135700.1381396-1-yury.norov@gmail.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | arch: enable GENERIC_FIND_FIRST_BIT for MIPS and ARM64 | expand |
On Thu, 25 Feb 2021 05:56:58 -0800, Yury Norov wrote: > MIPS and ARM64 don't implement find_first_{zero}_bit in arch code and > don't enable it in config. It leads to using find_next_bit() which is > less efficient: > > It's beneficial to enable GENERIC_FIND_FIRST_BIT as this functionality > is not new at all and well-tested. It provides more optimized code and > saves .text memory: > > [...] Applied to arm64 (for-next/misc), thanks! [1/2] ARM64: enable GENERIC_FIND_FIRST_BIT https://git.kernel.org/arm64/c/98c5ec77c7c5
MIPS and ARM64 don't implement find_first_{zero}_bit in arch code and don't enable it in config. It leads to using find_next_bit() which is less efficient: It's beneficial to enable GENERIC_FIND_FIRST_BIT as this functionality is not new at all and well-tested. It provides more optimized code and saves .text memory: Alexander Lobakin (1): MIPS: enable GENERIC_FIND_FIRST_BIT Yury Norov (1): arm64: enable GENERIC_FIND_FIRST_BIT arch/arm64/Kconfig | 1 + arch/mips/Kconfig | 1 + 2 files changed, 2 insertions(+)