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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-03-03 23:49:26 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 21:57:59 +0200 |
| commit | 727b705baf7d091a9bc5494d7f1d9699b6932531 (patch) | |
| tree | c89b9bb4fa1e684c43bcad4c79bb6b878c57976b /kernel/rcu/tree.h | |
| parent | rcu: Convert from rcu_preempt_state to *rcu_state_p (diff) | |
| download | linux-727b705baf7d091a9bc5494d7f1d9699b6932531.tar.xz linux-727b705baf7d091a9bc5494d7f1d9699b6932531.zip | |
rcu: Eliminate a few RCU_BOOST #ifdefs in favor of IS_ENABLED()
This commit removes a few RCU_BOOST #ifdefs, replacing them with
IS_ENABLED()-protected return statements. This relies on the
optimizer to remove any resulting dead code. There are several other
RCU_BOOST #ifdefs, however these rely on some per-CPU variables that
are available only under RCU_BOOST. These might be converted later,
if the simplification proves to outweigh the increase in memory footprint.
One hoped-for advantage is more easily locating compiler errors in
obscure combinations of Kconfig parameters.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: <linux-rt-users@vger.kernel.org>
Diffstat (limited to 'kernel/rcu/tree.h')
| -rw-r--r-- | kernel/rcu/tree.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index a69d3dab2ec4..dd5ce4034875 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -170,7 +170,6 @@ struct rcu_node { /* if there is no such task. If there */ /* is no current expedited grace period, */ /* then there can cannot be any such task. */ -#ifdef CONFIG_RCU_BOOST struct list_head *boost_tasks; /* Pointer to first task that needs to be */ /* priority boosted, or NULL if no priority */ @@ -208,7 +207,6 @@ struct rcu_node { unsigned long n_balk_nos; /* Refused to boost: not sure why, though. */ /* This can happen due to race conditions. */ -#endif /* #ifdef CONFIG_RCU_BOOST */ #ifdef CONFIG_RCU_NOCB_CPU wait_queue_head_t nocb_gp_wq[2]; /* Place for rcu_nocb_kthread() to wait GP. */ |