From: Praveen Kumar Date: Wed, 25 Jan 2017 09:51:47 +0000 (+0100) Subject: credit2: performance counter for load balancing call X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~2911 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=d5c4a55e007db102ee6bd1ac771f0b05458609c2;p=xen.git credit2: performance counter for load balancing call The patch introduces a new performance counter that counts how many times we go through the load balancing logic in Credit2. Signed-off-by: Praveen Kumar Acked-by: Dario Faggioli --- diff --git a/xen/common/sched_credit2.c b/xen/common/sched_credit2.c index 2ce738dcd9..b2f2b17ade 100644 --- a/xen/common/sched_credit2.c +++ b/xen/common/sched_credit2.c @@ -1887,6 +1887,8 @@ retry: (unsigned char *)&d); } + SCHED_STAT_CRANK(acct_load_balance); + /* Look for "swap" which gives the best load average * FIXME: O(n^2)! */ diff --git a/xen/include/xen/perfc_defn.h b/xen/include/xen/perfc_defn.h index 900fddd9d2..0d702f04c8 100644 --- a/xen/include/xen/perfc_defn.h +++ b/xen/include/xen/perfc_defn.h @@ -57,6 +57,7 @@ PERFCOUNTER(vcpu_hot, "csched: vcpu_hot") /* credit2 specific counters */ PERFCOUNTER(burn_credits_t2c, "csched2: burn_credits_t2c") +PERFCOUNTER(acct_load_balance, "csched2: acct_load_balance") PERFCOUNTER(upd_max_weight_quick, "csched2: update_max_weight_quick") PERFCOUNTER(upd_max_weight_full, "csched2: update_max_weight_full") PERFCOUNTER(migrate_requested, "csched2: migrate_requested")