[PATCH v2 04/10] xprtrdma: Refactor tasklet scheduling

Chuck Lever
2014-11-09T01:14:37Z

Restore the separate function that schedules the reply handling
tasklet. I need to call it from two different paths.

Signed-off-by: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
---
net/sunrpc/xprtrdma/verbs.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 3c88276..478b2fd 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -107,6 +107,17 @@ rpcrdma_run_tasklet(unsigned long data)
static DECLARE_TASKLET(rpcrdma_tasklet_g, rpcrdma_run_tasklet, 0UL);

static void
+rpcrdma_schedule_tasklet(struct list_head *sched_list)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rpcrdma_tk_lock_g, flags);
+ list_splice_tail(sched_list, &rpcrdma_tasklets_g);
+ spin_unlock_irqrestore(&rpcrdma_tk_lock_g, flags);
+ tasklet_schedule(&rpcrdma_tasklet_g);
+}
+
+static void
rpcrdma_qp_async_error_upcall(struct ib_event *event, void *context)
{
struct rpcrdma_ep *ep = context;
@@ -244,7 +255,6 @@ rpcrdma_recvcq_poll(struct ib_cq *cq, struct rpcrdma_ep *ep)
struct list_head sched_list;
struct ib_wc *wcs;
int budget, count, rc;
- unsigned long flags;

INIT_LIST_HEAD(&sched_list);
budget = RPCRDMA_WC_BUDGET / RPCRDMA_POLLSIZE;
@@ -262,10 +272,7 @@ rpcrdma_recvcq_poll(struct ib_cq *cq, struct rpcrdma_ep *ep)
rc = 0;

out_schedule:
- spin_lock_irqsave(&rpcrdma_tk_lock_g, flags);
- list_splice_tail(&sched_list, &rpcrdma_tasklets_g);
- spin_unlock_irqrestore(&rpcrdma_tk_lock_g, flags);
- tasklet_schedule(&rpcrdma_tasklet_g);
+ rpcrdma_schedule_tasklet(&sched_list);
return rc;
}