[PATCH] ww-mutex: clarify help text for DEBUG_WW_MUTEX_SLOWPATH
robdclark at gmail.com
Wed Aug 27 08:19:26 PDT 2014
We really don't want distro's enabling this in their kernels. Try and
make that more clear.
Signed-off-by: Rob Clark <robdclark at gmail.com>
lib/Kconfig.debug | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 07c2832..1b233fc 100644
@@ -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.
bool "Lock debugging: detect incorrect freeing of live locks"
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