[SCSI] fcoe: Use per-CPU kernel function for dev_stats instead of an array
Remove the hotplug creation of dev_stats, we allocate for all possible CPUs
now when we allocate the lport.
v2: Durring the 2.6.30 merge window, before these patches were comitted,
'percpu_ptr' was renamed 'per_cpu_ptr'. This latest update updates this
patch for the name change.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index a5725f3..0997e8b1 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -407,10 +407,12 @@
if (~crc != le32_to_cpu(fr_crc(fp))) {
crc_err:
- stats = lp->dev_stats[smp_processor_id()];
+ stats = fc_lport_get_stats(lp);
stats->ErrorFrames++;
+ /* FIXME - per cpu count, not total count! */
if (stats->InvalidCRCCount++ < 5)
- FC_DBG("CRC error on data frame\n");
+ printk(KERN_WARNING "CRC error on data frame for port (%6x)\n",
+ fc_host_port_id(lp->host));
/*
* Assume the frame is total garbage.
* We may have copied it over the good part
@@ -1752,7 +1754,7 @@
/*
* setup the data direction
*/
- stats = lp->dev_stats[smp_processor_id()];
+ stats = fc_lport_get_stats(lp);
if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE) {
fsp->req_flags = FC_SRB_READ;
stats->InputRequests++;
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index 7ef4450..b8178ef 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -267,10 +267,10 @@
struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
{
- int i;
struct fc_host_statistics *fcoe_stats;
struct fc_lport *lp = shost_priv(shost);
struct timespec v0, v1;
+ unsigned int cpu;
fcoe_stats = &lp->host_stats;
memset(fcoe_stats, 0, sizeof(struct fc_host_statistics));
@@ -279,10 +279,11 @@
jiffies_to_timespec(lp->boot_time, &v1);
fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec);
- for_each_online_cpu(i) {
- struct fcoe_dev_stats *stats = lp->dev_stats[i];
- if (stats == NULL)
- continue;
+ for_each_possible_cpu(cpu) {
+ struct fcoe_dev_stats *stats;
+
+ stats = per_cpu_ptr(lp->dev_stats, cpu);
+
fcoe_stats->tx_frames += stats->TxFrames;
fcoe_stats->tx_words += stats->TxWords;
fcoe_stats->rx_frames += stats->RxFrames;