netdev - [PATCH net-next 3/7] net/smc: no delay for free tx buffer wait

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Date:   Tue, 12 Feb 2019 16:29:52 +0100
From:   Ursula Braun <ubraun@...ux.ibm.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, linux-s390@...r.kernel.org,
        schwidefsky@...ibm.com, heiko.carstens@...ibm.com,
        raspl@...ux.ibm.com, ubraun@...ux.ibm.com
Subject: [PATCH net-next 3/7] net/smc: no delay for free tx buffer wait

From: Karsten Graul <kgraul@...ux.ibm.com>

When no free transfer buffers are available then a work to call
smc_tx_work() is scheduled. Set the schedule delay to zero, because for
the out-of-buffers condition the work can start immediately and will
block in the called function smc_wr_tx_get_free_slot(), waiting for free
buffers.

Signed-off-by: Karsten Graul <kgraul@...ux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@...ux.ibm.com>
---
 net/smc/smc_tx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/smc/smc_tx.c b/net/smc/smc_tx.c
index dd10a913b38e..a3bff08ff8c8 100644
--- a/net/smc/smc_tx.c
+++ b/net/smc/smc_tx.c
@@ -28,7 +28,7 @@
 #include "smc_ism.h"
 #include "smc_tx.h"
 
-#define SMC_TX_WORK_DELAY	HZ
+#define SMC_TX_WORK_DELAY	0
 #define SMC_TX_CORK_DELAY	(HZ >> 2)	/* 250 ms */
 
 /***************************** sndbuf producer *******************************/
-- 
2.16.4