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| author | Paul E. McKenney | 2019-01-14 19:19:20 +0100 |
|---|---|---|
| committer | Paul E. McKenney | 2019-03-26 22:40:13 +0100 |
| commit | 7ac1907c9e7ba5f80d3c298fe9d2dbf620566a49 (patch) | |
| tree | 0f81ccafa0a1cee54a7e53dc42cff00edfb088cc /kernel/rcu/tree.c | |
| parent | rcu: Organize functions in tree_stall.h (diff) | |
| download | kernel-qcow2-linux-7ac1907c9e7ba5f80d3c298fe9d2dbf620566a49.tar.gz kernel-qcow2-linux-7ac1907c9e7ba5f80d3c298fe9d2dbf620566a49.tar.xz kernel-qcow2-linux-7ac1907c9e7ba5f80d3c298fe9d2dbf620566a49.zip | |
rcu: Move irq-disabled stall-warning checking to tree_stall.h
The rcu_iw_handler() function's sole purpose in life is to indicate
whether a stalled CPU had interrupts disabled, so it belongs in
kernel/rcu/tree_stall.h. This commit therefore makes that move,
clarifying its header comment while in the area.
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 001dd05f6e38..929531ed168c 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1032,27 +1032,6 @@ static int dyntick_save_progress_counter(struct rcu_data *rdp) } /* - * Handler for the irq_work request posted when a grace period has - * gone on for too long, but not yet long enough for an RCU CPU - * stall warning. Set state appropriately, but just complain if - * there is unexpected state on entry. - */ -static void rcu_iw_handler(struct irq_work *iwp) -{ - struct rcu_data *rdp; - struct rcu_node *rnp; - - rdp = container_of(iwp, struct rcu_data, rcu_iw); - rnp = rdp->mynode; - raw_spin_lock_rcu_node(rnp); - if (!WARN_ON_ONCE(!rdp->rcu_iw_pending)) { - rdp->rcu_iw_gp_seq = rnp->gp_seq; - rdp->rcu_iw_pending = false; - } - raw_spin_unlock_rcu_node(rnp); -} - -/* * Return true if the specified CPU has passed through a quiescent * state by virtue of being in or having passed through an dynticks * idle state since the last call to dyntick_save_progress_counter() |