From bba7eb5d9b4ebccacd30331121ee29764212a29d Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 4 Jul 2016 16:22:20 +0200 Subject: hfsc: reduce hfsc_sched to 14 cachelines hfsc_sched is huge (size: 920, cachelines: 15), but we can get it to 14 cachelines by placing level after filter_cnt (covering 4 byte hole) and reducing period/nactive/flags to u32 (period is just a counter, incremented when class becomes active -- 2**32 is plenty for this purpose, also, long is only 32bit wide on 32bit platforms anyway). cl_vtperiod is exported to userspace via tc_hfsc_stats, but its period member is already u32, so no precision is lost there either. Cc: Michal Soltys Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- net/sched/sch_hfsc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'net') diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index dff92ea772fe..3ddc7bd74ecb 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -115,9 +115,9 @@ struct hfsc_class { struct gnet_stats_basic_packed bstats; struct gnet_stats_queue qstats; struct gnet_stats_rate_est64 rate_est; - unsigned int level; /* class level in hierarchy */ struct tcf_proto __rcu *filter_list; /* filter list */ unsigned int filter_cnt; /* filter count */ + unsigned int level; /* class level in hierarchy */ struct hfsc_sched *sched; /* scheduler data */ struct hfsc_class *cl_parent; /* parent class */ @@ -165,10 +165,10 @@ struct hfsc_class { struct runtime_sc cl_virtual; /* virtual curve */ struct runtime_sc cl_ulimit; /* upperlimit curve */ - unsigned long cl_flags; /* which curves are valid */ - unsigned long cl_vtperiod; /* vt period sequence number */ - unsigned long cl_parentperiod;/* parent's vt period sequence number*/ - unsigned long cl_nactive; /* number of active children */ + u8 cl_flags; /* which curves are valid */ + u32 cl_vtperiod; /* vt period sequence number */ + u32 cl_parentperiod;/* parent's vt period sequence number*/ + u32 cl_nactive; /* number of active children */ }; struct hfsc_sched { -- cgit v1.2.3