Module Name: src
Committed By: ozaki-r
Date: Thu Mar 30 06:50:53 UTC 2017
Modified Files:
src/doc: TODO.smpnet
Log Message:
Write about bpf's statistic counters
To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 src/doc/TODO.smpnet
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/doc/TODO.smpnet
diff -u src/doc/TODO.smpnet:1.10 src/doc/TODO.smpnet:1.11
--- src/doc/TODO.smpnet:1.10 Thu Mar 30 04:37:58 2017
+++ src/doc/TODO.smpnet Thu Mar 30 06:50:53 2017
@@ -1,4 +1,4 @@
-$NetBSD: TODO.smpnet,v 1.10 2017/03/30 04:37:58 ozaki-r Exp $
+$NetBSD: TODO.smpnet,v 1.11 2017/03/30 06:50:53 ozaki-r Exp $
MP-safe components
==================
@@ -140,4 +140,8 @@ fstat(1) shows information of bpf instan
obtained via kvm(3). bpf_d#_bd_next, bpf_d#_bd_filter and bpf_d#_bd_list
member variables are obsolete but remain. ifnet#if_xname is also accessed
via struct bpf_if and obsolete ifnet#if_list is required to remain to not change
-the offset of ifnet#if_xname.
+the offset of ifnet#if_xname. The statistic counters (bpf#bd_rcount,
+bpf#bd_dcount and bpf#bd_ccount) are also victims of this restriction; for
+scalability the statistic counters should be per-CPU and we should stop using
+atomic operations for them however we have to remain the counters and atomic
+operations.
