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rcu: Eliminate rcu_state structure's ->call field
The rcu_state structure's ->call field references the corresponding RCU flavor's call_rcu() function. However, now that there is only ever one rcu_state structure in a given build of the Linux kernel, and that flavor uses plain old call_rcu(), there is not a lot of point in continuing to have the ->call field. This commit therefore removes it. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
parent
358be2d368
commit
ec5dd444b6
3 changed files with 1 additions and 3 deletions
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@ -76,7 +76,6 @@ static DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_data, rcu_data);
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struct rcu_state rcu_state = {
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struct rcu_state rcu_state = {
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.level = { &rcu_state.node[0] },
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.level = { &rcu_state.node[0] },
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.rda = &rcu_data,
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.rda = &rcu_data,
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.call = call_rcu,
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.gp_state = RCU_GP_IDLE,
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.gp_state = RCU_GP_IDLE,
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.gp_seq = (0UL - 300UL) << RCU_SEQ_CTR_SHIFT,
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.gp_seq = (0UL - 300UL) << RCU_SEQ_CTR_SHIFT,
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.barrier_mutex = __MUTEX_INITIALIZER(rcu_state.barrier_mutex),
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.barrier_mutex = __MUTEX_INITIALIZER(rcu_state.barrier_mutex),
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@ -313,7 +313,6 @@ struct rcu_state {
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/* Hierarchy levels (+1 to */
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/* Hierarchy levels (+1 to */
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/* shut bogus gcc warning) */
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/* shut bogus gcc warning) */
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struct rcu_data __percpu *rda; /* pointer of percu rcu_data. */
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struct rcu_data __percpu *rda; /* pointer of percu rcu_data. */
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call_rcu_func_t call; /* call_rcu() flavor. */
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int ncpus; /* # CPUs seen so far. */
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int ncpus; /* # CPUs seen so far. */
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/* The following fields are guarded by the root rcu_node's lock. */
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/* The following fields are guarded by the root rcu_node's lock. */
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@ -619,7 +619,7 @@ static void _synchronize_rcu_expedited(struct rcu_state *rsp,
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/* If expedited grace periods are prohibited, fall back to normal. */
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/* If expedited grace periods are prohibited, fall back to normal. */
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if (rcu_gp_is_normal()) {
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if (rcu_gp_is_normal()) {
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wait_rcu_gp(rsp->call);
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wait_rcu_gp(call_rcu);
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return;
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return;
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}
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}
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