diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_stats.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_stats.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_stats.c b/drivers/infiniband/hw/ipath/ipath_stats.c index d8b5e4cefe2..2955f368de0 100644 --- a/drivers/infiniband/hw/ipath/ipath_stats.c +++ b/drivers/infiniband/hw/ipath/ipath_stats.c @@ -55,6 +55,7 @@ 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, @@ -91,12 +92,18 @@ 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; @@ -200,6 +207,7 @@ void ipath_get_faststats(unsigned long opaque) struct ipath_devdata *dd = (struct ipath_devdata *) opaque; u32 val; static unsigned cnt; + unsigned long flags; /* * don't access the chip while running diags, or memory diags can @@ -210,9 +218,20 @@ void ipath_get_faststats(unsigned long opaque) /* but re-arm the timer, for diags case; won't hurt other */ goto done; + /* + * We now try to maintain a "active timer", based on traffic + * 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); + spin_lock_irqsave(&dd->ipath_eep_st_lock, flags); + if (dd->ipath_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) { - ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordsendcnt); - ipath_snap_cntr(dd, dd->ipath_cregs->cr_wordrcvcnt); ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktsendcnt); ipath_snap_cntr(dd, dd->ipath_cregs->cr_pktrcvcnt); } |