Searched +hist:76 +hist:c8eaaf (Results 1 - 1 of 1) sorted by relevance
| /linux-master/include/linux/ | ||
| H A D | rcupdate.h | diff 76c8eaaf Wed Apr 21 15:30:54 MDT 2021 Paul E. McKenney <paulmck@kernel.org> rcu: Create an unrcu_pointer() to remove __rcu from a pointer The xchg() and cmpxchg() functions are sometimes used to carry out RCU updates. Unfortunately, this can result in sparse warnings for both the old-value and new-value arguments, as well as for the return value. The arguments can be dealt with using RCU_INITIALIZER(): old_p = xchg(&p, RCU_INITIALIZER(new_p)); But a sparse warning still remains due to assigning the __rcu pointer returned from xchg to the (most likely) non-__rcu pointer old_p. This commit therefore provides an unrcu_pointer() macro that strips the __rcu. This macro can be used as follows: old_p = unrcu_pointer(xchg(&p, RCU_INITIALIZER(new_p))); Reported-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> diff 76c8eaaf Wed Apr 21 15:30:54 MDT 2021 Paul E. McKenney <paulmck@kernel.org> rcu: Create an unrcu_pointer() to remove __rcu from a pointer The xchg() and cmpxchg() functions are sometimes used to carry out RCU updates. Unfortunately, this can result in sparse warnings for both the old-value and new-value arguments, as well as for the return value. The arguments can be dealt with using RCU_INITIALIZER(): old_p = xchg(&p, RCU_INITIALIZER(new_p)); But a sparse warning still remains due to assigning the __rcu pointer returned from xchg to the (most likely) non-__rcu pointer old_p. This commit therefore provides an unrcu_pointer() macro that strips the __rcu. This macro can be used as follows: old_p = unrcu_pointer(xchg(&p, RCU_INITIALIZER(new_p))); Reported-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
Completed in 346 milliseconds