On Wed, Jun 03, 2020 at 04:04:31PM -0700, Joe Perches wrote:
> more odd uses (mostly in comments)
>
> $ git grep -P -oh '\bIS_ENABLED\s*\(\s*\w+\s*\)'| \
> sed -r 's/\s+//g'| \
> grep -v '(CONFIG_' | \
> sort | uniq -c | sort -rn
I think a missed a bunch because my grep was messy. :) This is much
easier to scan.
> 7 IS_ENABLED(DEBUG)
> 4 IS_ENABLED(cfg)
> 2 IS_ENABLED(opt_name)
> 2 IS_ENABLED(DEBUG_PRINT_TRIE_GRAPHVIZ)
> 2 IS_ENABLED(config)
> 2 IS_ENABLED(cond)
> 2 IS_ENABLED(__BIG_ENDIAN)
> 1 IS_ENABLED(x)
> 1 IS_ENABLED(PWM_DEBUG)
> 1 IS_ENABLED(option)
> 1 IS_ENABLED(DEBUG_RANDOM_TRIE)
> 1 IS_ENABLED(DEBUG_CHACHA20POLY1305_SLOW_CHUNK_TEST)
These seem to be "as expected".
> 4 IS_ENABLED(DRM_I915_SELFTEST)
> 1 IS_ENABLED(STRICT_KERNEL_RWX)
> 1 IS_ENABLED(ETHTOOL_NETLINK)
But these are not.
>
> STRICT_KERNEL_RWX is misused here in ppc
>
> ---
>
> Fix pr_warn without newline too.
>
> arch/powerpc/mm/book3s64/hash_utils.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/arch/powerpc/mm/book3s64/hash_utils.c
> b/arch/powerpc/mm/book3s64/hash_utils.c
> index 51e3c15f7aff..dd60c5f2b991 100644
> --- a/arch/powerpc/mm/book3s64/hash_utils.c
> +++ b/arch/powerpc/mm/book3s64/hash_utils.c
> @@ -660,11 +660,10 @@ static void __init htab_init_page_sizes(void)
> * Pick a size for the linear mapping. Currently, we only
> * support 16M, 1M and 4K which is the default
> */
> - if (IS_ENABLED(STRICT_KERNEL_RWX) &&
> + if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX) &&
> (unsigned long)_stext % 0x1000000) {
> if (mmu_psize_defs[MMU_PAGE_16M].shift)
> - pr_warn("Kernel not 16M aligned, "
> - "disabling 16M linear map alignment");
> + pr_warn("Kernel not 16M aligned, disabling 16M
> linear map alignment\n");
> aligned = false;
> }
Reviewed-by: Kees Cook <keesc...@chromium.org>
--
Kees Cook
