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rcu: Remove SPARSE_RCU_POINTER Kconfig option

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The sparse-based checking for non-RCU accesses to RCU-protected pointers
has been around for a very long time, and it is now the only type of
sparse-based checking that is optional.  This commit therefore makes
it unconditional.

Reported-by: Ingo Molnar <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: Fengguang Wu <[email protected]>
This commit is contained in:
Paul E. McKenney 2017-05-12 15:56:35 -07:00
commit 41a2901e7d
7 changed files with 7 additions and 42 deletions
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15
lib/Kconfig.debug
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@ -1306,21 +1306,6 @@ menu "RCU Debugging"
config PROVE_RCU
def_bool PROVE_LOCKING
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 TORTURE_TEST
tristate
default n