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author | Jens Axboe <axboe@fb.com> | 2014-09-11 19:31:18 +0400 |
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committer | Jens Axboe <axboe@fb.com> | 2014-09-11 19:31:18 +0400 |
commit | b207892b061da7608878e273ae22ba9bf9be264b (patch) | |
tree | 51daa46b89b83cad422941f52110b19571b85b79 /lib/Kconfig.debug | |
parent | 018a17bdc8658ad448497c84d4ba21b6985820ec (diff) | |
parent | a516440542afcb9647f88d12c35640baf02d07ea (diff) | |
download | linux-b207892b061da7608878e273ae22ba9bf9be264b.tar.xz |
Merge branch 'for-linus' into for-3.18/core
A bit of churn on the for-linus side that would be nice to have
in the core bits for 3.18, so pull it in to catch us up and make
forward progress easier.
Signed-off-by: Jens Axboe <axboe@fb.com>
Conflicts:
block/scsi_ioctl.c
Diffstat (limited to 'lib/Kconfig.debug')
-rw-r--r-- | lib/Kconfig.debug | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 07c28323f88f..a28590083622 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" @@ -1032,8 +1036,13 @@ config TRACE_IRQFLAGS either tracing or lock debugging. config STACKTRACE - bool + bool "Stack backtrace support" depends on STACKTRACE_SUPPORT + help + This option causes the kernel to create a /proc/pid/stack for + every process, showing its current stack trace. + It is also used by various kernel debugging features that require + stack trace generation. config DEBUG_KOBJECT bool "kobject debugging" |