[src/trunk]: src/sys/arch/powerpc/ibm4xx Remove evcnt(9) counter for tlbhit; ...

[rin <rin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/05228a55452c
branches:  trunk
changeset: 935284:05228a55452c
user:      rin <rin%NetBSD.org@localhost>
date:      Mon Jun 29 06:51:32 2020 +0000

description:
Remove evcnt(9) counter for tlbhit; there's no way to observe TLB hits
from kernel, and it just counted intersection b/w tlbmiss and tlbenter.

diffstat:

 sys/arch/powerpc/ibm4xx/pmap.c |  8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diffs (41 lines):

diff -r b4648992e027 -r 05228a55452c sys/arch/powerpc/ibm4xx/pmap.c
--- a/sys/arch/powerpc/ibm4xx/pmap.c    Mon Jun 29 06:39:38 2020 +0000
+++ b/sys/arch/powerpc/ibm4xx/pmap.c    Mon Jun 29 06:51:32 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.88 2020/06/19 07:31:59 rin Exp $    */
+/*     $NetBSD: pmap.c,v 1.89 2020/06/29 06:51:32 rin Exp $    */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -67,7 +67,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.88 2020/06/19 07:31:59 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.89 2020/06/29 06:51:32 rin Exp $");
 
 #include <sys/param.h>
 #include <sys/cpu.h>
@@ -123,14 +123,11 @@
 /* Event counters */
 struct evcnt tlbmiss_ev = EVCNT_INITIALIZER(EVCNT_TYPE_TRAP,
        NULL, "cpu", "tlbmiss");
-struct evcnt tlbhit_ev = EVCNT_INITIALIZER(EVCNT_TYPE_TRAP,
-       NULL, "cpu", "tlbhit");
 struct evcnt tlbflush_ev = EVCNT_INITIALIZER(EVCNT_TYPE_TRAP,
        NULL, "cpu", "tlbflush");
 struct evcnt tlbenter_ev = EVCNT_INITIALIZER(EVCNT_TYPE_TRAP,
        NULL, "cpu", "tlbenter");
 EVCNT_ATTACH_STATIC(tlbmiss_ev);
-EVCNT_ATTACH_STATIC(tlbhit_ev);
 EVCNT_ATTACH_STATIC(tlbflush_ev);
 EVCNT_ATTACH_STATIC(tlbenter_ev);
 
@@ -1496,7 +1493,6 @@
                tte = TTE_PA(va) | TTE_ZONE(ZONE_PRIV) | TTE_SZ_16M | TTE_WR;
 #endif
        }
-       tlbhit_ev.ev_count++;
        ppc4xx_tlb_enter(ctx, va, tte);
 
        return 0;