From: Kees Cook <keescook@chromium.org>
To: Joe Perches <joe@perches.com>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Thierry Reding" <thierry.reding@gmail.com>,
linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Paul Mackerras" <paulus@samba.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH] pwm: Add missing "CONFIG_" prefix
Date: Wed, 3 Jun 2020 16:38:32 -0700 [thread overview]
Message-ID: <202006031634.477F65AC53@keescook> (raw)
In-Reply-To: <b08611018fdb6d88757c6008a5c02fa0e07b32fb.camel@perches.com>
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 <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2020-06-03 23:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-03 22:40 [PATCH] pwm: Add missing "CONFIG_" prefix Kees Cook
2020-06-03 23:04 ` Joe Perches
2020-06-03 23:38 ` Kees Cook [this message]
2020-06-04 21:52 ` Kees Cook
2020-06-05 4:07 ` Joe Perches
2020-06-04 14:43 ` Uwe Kleine-König
2020-06-04 17:16 ` Thierry Reding
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