diff options
| author | Soren Brinkmann <soren.brinkmann@xilinx.com> | 2014-05-05 00:43:01 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-05 23:11:18 +0200 |
| commit | 504ad98df3a6b027ce997ca8f620e949cafb151f (patch) | |
| tree | 4fcd8f66ca94c65c7b11ce06434716969ad41f7c /drivers | |
| parent | net: macb: Re-enable RX interrupt only when RX is done (diff) | |
| download | linux-504ad98df3a6b027ce997ca8f620e949cafb151f.tar.xz linux-504ad98df3a6b027ce997ca8f620e949cafb151f.zip | |
net: macb: Remove 'unlikely' optimization
Coverage data suggests that the unlikely case of receiving data while
the receive handler is running may not be that unlikely.
Coverage data after running iperf for a while:
91320: 891: work_done = bp->macbgem_ops.mog_rx(bp, budget);
91320: 892: if (work_done < budget) {
2362: 893: napi_complete(napi);
-: 894:
-: 895: /* Packets received while interrupts were disabled */
4724: 896: status = macb_readl(bp, RSR);
2362: 897: if (unlikely(status)) {
762: 898: if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE)
762: 899: macb_writel(bp, ISR, MACB_BIT(RCOMP));
-: 900: napi_reschedule(napi);
-: 901: } else {
1600: 902: macb_writel(bp, IER, MACB_RX_INT_FLAGS);
-: 903: }
-: 904: }
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 3f4b8ee0b0e7..3e13aa31548a 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -893,7 +893,7 @@ static int macb_poll(struct napi_struct *napi, int budget) /* Packets received while interrupts were disabled */ status = macb_readl(bp, RSR); - if (unlikely(status)) { + if (status) { if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) macb_writel(bp, ISR, MACB_BIT(RCOMP)); napi_reschedule(napi); |