From 398c2b05bbee21cc172dfff017c0351d4d14e04c Mon Sep 17 00:00:00 2001 From: Yamin Friedman Date: Thu, 22 Nov 2018 09:51:17 +0200 Subject: linux/dim: Add completions count to dim_sample Added a measurement of completions per/msec to allow for completion based dim algorithms. In order to use dynamic interrupt moderation with RDMA we need to have a different measurment than packets per second. This change is meant to prepare for adding a new DIM method. All drivers that use net_dim and thus do not need a completion count will have the completions set to 0. Signed-off-by: Yamin Friedman Reviewed-by: Max Gurtovoy Signed-off-by: Saeed Mahameed --- lib/dim/dim.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'lib/dim') diff --git a/lib/dim/dim.c b/lib/dim/dim.c index 17d5236759bd..439d641ec796 100644 --- a/lib/dim/dim.c +++ b/lib/dim/dim.c @@ -62,6 +62,8 @@ void dim_calc_stats(struct dim_sample *start, struct dim_sample *end, u32 npkts = BIT_GAP(BITS_PER_TYPE(u32), end->pkt_ctr, start->pkt_ctr); u32 nbytes = BIT_GAP(BITS_PER_TYPE(u32), end->byte_ctr, start->byte_ctr); + u32 ncomps = BIT_GAP(BITS_PER_TYPE(u32), end->comp_ctr, + start->comp_ctr); if (!delta_us) return; @@ -70,5 +72,12 @@ void dim_calc_stats(struct dim_sample *start, struct dim_sample *end, curr_stats->bpms = DIV_ROUND_UP(nbytes * USEC_PER_MSEC, delta_us); curr_stats->epms = DIV_ROUND_UP(DIM_NEVENTS * USEC_PER_MSEC, delta_us); + curr_stats->cpms = DIV_ROUND_UP(ncomps * USEC_PER_MSEC, delta_us); + if (curr_stats->epms != 0) + curr_stats->cpe_ratio = + (curr_stats->cpms * 100) / curr_stats->epms; + else + curr_stats->cpe_ratio = 0; + } EXPORT_SYMBOL(dim_calc_stats); -- cgit