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path: root/drivers/infiniband/hw/ipath/ipath_stats.c
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Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_stats.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_stats.c17
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_stats.c b/drivers/infiniband/hw/ipath/ipath_stats.c
index bae4f56f727..f0271415cd5 100644
--- a/drivers/infiniband/hw/ipath/ipath_stats.c
+++ b/drivers/infiniband/hw/ipath/ipath_stats.c
@@ -55,7 +55,6 @@ u64 ipath_snap_cntr(struct ipath_devdata *dd, ipath_creg creg)
u64 val64;
unsigned long t0, t1;
u64 ret;
- unsigned long flags;
t0 = jiffies;
/* If fast increment counters are only 32 bits, snapshot them,
@@ -92,18 +91,12 @@ u64 ipath_snap_cntr(struct ipath_devdata *dd, ipath_creg creg)
if (creg == dd->ipath_cregs->cr_wordsendcnt) {
if (val != dd->ipath_lastsword) {
dd->ipath_sword += val - dd->ipath_lastsword;
- spin_lock_irqsave(&dd->ipath_eep_st_lock, flags);
- dd->ipath_traffic_wds += val - dd->ipath_lastsword;
- spin_unlock_irqrestore(&dd->ipath_eep_st_lock, flags);
dd->ipath_lastsword = val;
}
val64 = dd->ipath_sword;
} else if (creg == dd->ipath_cregs->cr_wordrcvcnt) {
if (val != dd->ipath_lastrword) {
dd->ipath_rword += val - dd->ipath_lastrword;
- spin_lock_irqsave(&dd->ipath_eep_st_lock, flags);
- dd->ipath_traffic_wds += val - dd->ipath_lastrword;
- spin_unlock_irqrestore(&dd->ipath_eep_st_lock, flags);
dd->ipath_lastrword = val;
}
val64 = dd->ipath_rword;
@@ -247,6 +240,7 @@ void ipath_get_faststats(unsigned long opaque)
u32 val;
static unsigned cnt;
unsigned long flags;
+ u64 traffic_wds;
/*
* don't access the chip while running diags, or memory diags can
@@ -262,12 +256,13 @@ void ipath_get_faststats(unsigned long opaque)
* exceeding a threshold, so we need to check the word-counts
* even if they are 64-bit.
*/
- ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt);
- ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt);
+ traffic_wds = ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt) +
+ ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt);
spin_lock_irqsave(&dd->ipath_eep_st_lock, flags);
- if (dd->ipath_traffic_wds >= IPATH_TRAFFIC_ACTIVE_THRESHOLD)
+ traffic_wds -= dd->ipath_traffic_wds;
+ dd->ipath_traffic_wds += traffic_wds;
+ if (traffic_wds >= IPATH_TRAFFIC_ACTIVE_THRESHOLD)
atomic_add(5, &dd->ipath_active_time); /* S/B #define */
- dd->ipath_traffic_wds = 0;
spin_unlock_irqrestore(&dd->ipath_eep_st_lock, flags);
if (dd->ipath_flags & IPATH_32BITCOUNTERS) {