diff options
| author | Govindarajulu Varadarajan <gvaradar@cisco.com> | 2017-12-21 19:12:28 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-26 21:10:07 +0300 |
| commit | 18feb87105c3c16dc01e6981a6aafb175679b997 (patch) | |
| tree | 6c79c206a17cd37e6ceb048edc2c119076ab461e /drivers/net/ethernet/cisco | |
| parent | 66364bdf3a7e0470e84590d48fc11d902eca7fa9 (diff) | |
| download | linux-18feb87105c3c16dc01e6981a6aafb175679b997.tar.xz | |
enic: add wq clean up budget
In case of tx clean up, we set '-1' as budget. This means clean up until
wq is empty or till (1 << 32) pkts are cleaned. Under heavy load this
will run for long time and cause
"watchdog: BUG: soft lockup - CPU#25 stuck for 21s!" warning.
This patch sets wq clean up budget to 256.
Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cisco')
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic_main.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h index 6a9527004cb1..9b218f0e5a4c 100644 --- a/drivers/net/ethernet/cisco/enic/enic.h +++ b/drivers/net/ethernet/cisco/enic/enic.h @@ -43,6 +43,8 @@ #define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX) #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2) +#define ENIC_WQ_NAPI_BUDGET 256 + #define ENIC_AIC_LARGE_PKT_DIFF 3 struct enic_msix_entry { diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index d98676e43e03..f202ba72a811 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -1500,7 +1500,7 @@ static int enic_poll(struct napi_struct *napi, int budget) unsigned int cq_wq = enic_cq_wq(enic, 0); unsigned int intr = enic_legacy_io_intr(); unsigned int rq_work_to_do = budget; - unsigned int wq_work_to_do = -1; /* no limit */ + unsigned int wq_work_to_do = ENIC_WQ_NAPI_BUDGET; unsigned int work_done, rq_work_done = 0, wq_work_done; int err; @@ -1598,7 +1598,7 @@ static int enic_poll_msix_wq(struct napi_struct *napi, int budget) struct vnic_wq *wq = &enic->wq[wq_index]; unsigned int cq; unsigned int intr; - unsigned int wq_work_to_do = -1; /* clean all desc possible */ + unsigned int wq_work_to_do = ENIC_WQ_NAPI_BUDGET; unsigned int wq_work_done; unsigned int wq_irq; |