arm64: idreg-override: avoid strlen() to check for empty strings

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strlen() is a costly way to decide whether a string is empty, as in that
case, the first character will be NUL so we can check for that directly.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20231129111555.3594833-60-ardb@google.com
Signed-off-by: Will Deacon <will@kernel.org>

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Ard Biesheuvel 2023-11-29 12:16:13 +01:00 • committed by Will Deacon

parent dc3f5aae06

commit bcf1eed3f8

1 changed files with 1 additions and 1 deletions

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arch/arm64/kernel/idreg-override.c

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