rcu: Consolidate debugging Kconfig options
The RCU-related debugging Kconfig options are in two different places, and consume too much screen real estate. This commit therefore consolidates them into their own menu. Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>wifi-calibration
Dave Hansen
Paul E. McKenney
parent
b44f665623
commit
2f03e3ca74
|
|
@ -605,61 +605,6 @@ config PROVE_LOCKING
|
|||
|
||||
For more details, see Documentation/lockdep-design.txt.
|
||||
|
||||
config PROVE_RCU
|
||||
bool "RCU debugging: prove RCU correctness"
|
||||
depends on PROVE_LOCKING
|
||||
default n
|
||||
help
|
||||
This feature enables lockdep extensions that check for correct
|
||||
use of RCU APIs. This is currently under development. Say Y
|
||||
if you want to debug RCU usage or help work on the PROVE_RCU
|
||||
feature.
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config PROVE_RCU_REPEATEDLY
|
||||
bool "RCU debugging: don't disable PROVE_RCU on first splat"
|
||||
depends on PROVE_RCU
|
||||
default n
|
||||
help
|
||||
By itself, PROVE_RCU will disable checking upon issuing the
|
||||
first warning (or "splat"). This feature prevents such
|
||||
disabling, allowing multiple RCU-lockdep warnings to be printed
|
||||
on a single reboot.
|
||||
|
||||
Say Y to allow multiple RCU-lockdep warnings per boot.
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config PROVE_RCU_DELAY
|
||||
bool "RCU debugging: preemptible RCU race provocation"
|
||||
depends on DEBUG_KERNEL && PREEMPT_RCU
|
||||
default n
|
||||
help
|
||||
There is a class of races that involve an unlikely preemption
|
||||
of __rcu_read_unlock() just after ->rcu_read_lock_nesting has
|
||||
been set to INT_MIN. This feature inserts a delay at that
|
||||
point to increase the probability of these races.
|
||||
|
||||
Say Y to increase probability of preemption of __rcu_read_unlock().
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config SPARSE_RCU_POINTER
|
||||
bool "RCU debugging: sparse-based checks for pointer usage"
|
||||
default n
|
||||
help
|
||||
This feature enables the __rcu sparse annotation for
|
||||
RCU-protected pointers. This annotation will cause sparse
|
||||
to flag any non-RCU used of annotated pointers. This can be
|
||||
helpful when debugging RCU usage. Please note that this feature
|
||||
is not intended to enforce code cleanliness; it is instead merely
|
||||
a debugging aid.
|
||||
|
||||
Say Y to make sparse flag questionable use of RCU-protected pointers
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config LOCKDEP
|
||||
bool
|
||||
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
|
||||
|
|
@ -937,6 +882,63 @@ config BOOT_PRINTK_DELAY
|
|||
BOOT_PRINTK_DELAY also may cause LOCKUP_DETECTOR to detect
|
||||
what it believes to be lockup conditions.
|
||||
|
||||
menu "RCU Debugging"
|
||||
|
||||
config PROVE_RCU
|
||||
bool "RCU debugging: prove RCU correctness"
|
||||
depends on PROVE_LOCKING
|
||||
default n
|
||||
help
|
||||
This feature enables lockdep extensions that check for correct
|
||||
use of RCU APIs. This is currently under development. Say Y
|
||||
if you want to debug RCU usage or help work on the PROVE_RCU
|
||||
feature.
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config PROVE_RCU_REPEATEDLY
|
||||
bool "RCU debugging: don't disable PROVE_RCU on first splat"
|
||||
depends on PROVE_RCU
|
||||
default n
|
||||
help
|
||||
By itself, PROVE_RCU will disable checking upon issuing the
|
||||
first warning (or "splat"). This feature prevents such
|
||||
disabling, allowing multiple RCU-lockdep warnings to be printed
|
||||
on a single reboot.
|
||||
|
||||
Say Y to allow multiple RCU-lockdep warnings per boot.
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config PROVE_RCU_DELAY
|
||||
bool "RCU debugging: preemptible RCU race provocation"
|
||||
depends on DEBUG_KERNEL && PREEMPT_RCU
|
||||
default n
|
||||
help
|
||||
There is a class of races that involve an unlikely preemption
|
||||
of __rcu_read_unlock() just after ->rcu_read_lock_nesting has
|
||||
been set to INT_MIN. This feature inserts a delay at that
|
||||
point to increase the probability of these races.
|
||||
|
||||
Say Y to increase probability of preemption of __rcu_read_unlock().
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config SPARSE_RCU_POINTER
|
||||
bool "RCU debugging: sparse-based checks for pointer usage"
|
||||
default n
|
||||
help
|
||||
This feature enables the __rcu sparse annotation for
|
||||
RCU-protected pointers. This annotation will cause sparse
|
||||
to flag any non-RCU used of annotated pointers. This can be
|
||||
helpful when debugging RCU usage. Please note that this feature
|
||||
is not intended to enforce code cleanliness; it is instead merely
|
||||
a debugging aid.
|
||||
|
||||
Say Y to make sparse flag questionable use of RCU-protected pointers
|
||||
|
||||
Say N if you are unsure.
|
||||
|
||||
config RCU_TORTURE_TEST
|
||||
tristate "torture tests for RCU"
|
||||
depends on DEBUG_KERNEL
|
||||
|
|
@ -1015,6 +1017,8 @@ config RCU_TRACE
|
|||
Say Y here if you want to enable RCU tracing
|
||||
Say N if you are unsure.
|
||||
|
||||
endmenu # "RCU Debugging"
|
||||
|
||||
config KPROBES_SANITY_TEST
|
||||
bool "Kprobes sanity tests"
|
||||
depends on DEBUG_KERNEL
|
||||
|
|
|
|||
Loading…
Reference in New Issue