| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 27 Aug 2014 17:27:23 +0200 From: Maarten Lankhorst <maarten.lankhorst@...onical.com> To: Rob Clark <robdclark@...il.com>, linux-kernel@...r.kernel.org CC: Daniel Vetter <daniel@...ll.ch>, dri-devel@...ts.freedesktop.org Subject: Re: [PATCH] ww-mutex: clarify help text for DEBUG_WW_MUTEX_SLOWPATH Acked-by: Maarten Lankhorst <maarten.lankhorst@...onical.com> On 27-08-14 17:19, Rob Clark wrote: > We really don't want distro's enabling this in their kernels. Try and > make that more clear. > > Signed-off-by: Rob Clark <robdclark@...il.com> > --- > lib/Kconfig.debug | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index 07c2832..1b233fc 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -892,6 +892,10 @@ config DEBUG_WW_MUTEX_SLOWPATH > the full mutex checks enabled with (CONFIG_PROVE_LOCKING) this > will test all possible w/w mutex interface abuse with the > exception of simply not acquiring all the required locks. > + Note that this feature can introduce significant overhead, so > + it really should not be enabled in a production or distro kernel, > + even a debug kernel. If you are a driver writer, enable it. If > + you are a distro, do not. > > config DEBUG_LOCK_ALLOC > bool "Lock debugging: detect incorrect freeing of live locks" > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists