net/smc: no delay for free tx buffer wait
authorKarsten Graul <kgraul@linux.ibm.com>
Tue, 12 Feb 2019 15:29:52 +0000 (16:29 +0100)
committerDavid S. Miller <davem@davemloft.net>
Tue, 12 Feb 2019 16:59:45 +0000 (11:59 -0500)
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@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/smc/smc_tx.c

index dd10a91..a3bff08 100644 (file)
@@ -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 *******************************/