diff options
Diffstat (limited to 'net/core/gen_estimator.c')
| -rw-r--r-- | net/core/gen_estimator.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/net/core/gen_estimator.c b/net/core/gen_estimator.c index 6b5b6e7013c..9dfb88a933e 100644 --- a/net/core/gen_estimator.c +++ b/net/core/gen_estimator.c @@ -91,6 +91,8 @@ struct gen_estimator u32 avpps; struct rcu_head e_rcu; struct rb_node node; + struct gnet_stats_basic_cpu __percpu *cpu_bstats; + struct rcu_head head; }; struct gen_estimator_head @@ -115,9 +117,8 @@ static void est_timer(unsigned long arg) rcu_read_lock(); list_for_each_entry_rcu(e, &elist[idx].list, list) { - u64 nbytes; + struct gnet_stats_basic_packed b = {0}; u64 brate; - u32 npackets; u32 rate; spin_lock(e->stats_lock); @@ -125,15 +126,15 @@ static void est_timer(unsigned long arg) if (e->bstats == NULL) goto skip; - nbytes = e->bstats->bytes; - npackets = e->bstats->packets; - brate = (nbytes - e->last_bytes)<<(7 - idx); - e->last_bytes = nbytes; + __gnet_stats_copy_basic(&b, e->cpu_bstats, e->bstats); + + brate = (b.bytes - e->last_bytes)<<(7 - idx); + e->last_bytes = b.bytes; e->avbps += (brate >> e->ewma_log) - (e->avbps >> e->ewma_log); e->rate_est->bps = (e->avbps+0xF)>>5; - rate = (npackets - e->last_packets)<<(12 - idx); - e->last_packets = npackets; + rate = (b.packets - e->last_packets)<<(12 - idx); + e->last_packets = b.packets; e->avpps += (rate >> e->ewma_log) - (e->avpps >> e->ewma_log); e->rate_est->pps = (e->avpps+0x1FF)>>10; skip: @@ -197,18 +198,20 @@ struct gen_estimator *gen_find_node(const struct gnet_stats_basic_packed *bstats * as destination. A new timer with the interval specified in the * configuration TLV is created. Upon each interval, the latest statistics * will be read from &bstats and the estimated rate will be stored in - * &rate_est with the statistics lock grabed during this period. + * &rate_est with the statistics lock grabbed during this period. * * Returns 0 on success or a negative error code. * */ int gen_new_estimator(struct gnet_stats_basic_packed *bstats, + struct gnet_stats_basic_cpu __percpu *cpu_bstats, struct gnet_stats_rate_est64 *rate_est, spinlock_t *stats_lock, struct nlattr *opt) { struct gen_estimator *est; struct gnet_estimator *parm = nla_data(opt); + struct gnet_stats_basic_packed b = {0}; int idx; if (nla_len(opt) < sizeof(*parm)) @@ -221,15 +224,18 @@ int gen_new_estimator(struct gnet_stats_basic_packed *bstats, if (est == NULL) return -ENOBUFS; + __gnet_stats_copy_basic(&b, cpu_bstats, bstats); + idx = parm->interval + 2; est->bstats = bstats; est->rate_est = rate_est; est->stats_lock = stats_lock; est->ewma_log = parm->ewma_log; - est->last_bytes = bstats->bytes; + est->last_bytes = b.bytes; est->avbps = rate_est->bps<<5; - est->last_packets = bstats->packets; + est->last_packets = b.packets; est->avpps = rate_est->pps<<10; + est->cpu_bstats = cpu_bstats; spin_lock_bh(&est_tree_lock); if (!elist[idx].timer.function) { @@ -290,11 +296,12 @@ EXPORT_SYMBOL(gen_kill_estimator); * Returns 0 on success or a negative error code. */ int gen_replace_estimator(struct gnet_stats_basic_packed *bstats, + struct gnet_stats_basic_cpu __percpu *cpu_bstats, struct gnet_stats_rate_est64 *rate_est, spinlock_t *stats_lock, struct nlattr *opt) { gen_kill_estimator(bstats, rate_est); - return gen_new_estimator(bstats, rate_est, stats_lock, opt); + return gen_new_estimator(bstats, cpu_bstats, rate_est, stats_lock, opt); } EXPORT_SYMBOL(gen_replace_estimator); |