From: cheloha <cheloha@openbsd.org>
Date: Sun, 18 Feb 2024 00:54:03 +0000 (+0000)
Subject: dt(4): profile: remove clock interrupt staggering
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=173b228135c3f68aa4d8194978684a9083fcdfab;p=openbsd

dt(4): profile: remove clock interrupt staggering

Clock interrupt staggering makes profiling more expensive on average.

Remove it.

Thread: https://marc.info/?l=openbsd-tech&m=170751016121770&w=2

ok mpi@
---

diff --git a/sys/dev/dt/dt_dev.c b/sys/dev/dt/dt_dev.c
index 2383d3a732e..e11122687eb 100644
--- a/sys/dev/dt/dt_dev.c
+++ b/sys/dev/dt/dt_dev.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dt_dev.c,v 1.30 2024/02/09 17:42:18 cheloha Exp $ */
+/*	$OpenBSD: dt_dev.c,v 1.31 2024/02/18 00:54:03 cheloha Exp $ */
 
 /*
  * Copyright (c) 2019 Martin Pieuchot <mpi@openbsd.org>
@@ -497,8 +497,6 @@ dt_ioctl_record_start(struct dt_softc *sc)
 		if (dp->dp_nsecs != 0) {
 			clockintr_bind(&dp->dp_clockintr, dp->dp_cpu, dt_clock,
 			    dp);
-			clockintr_stagger(&dp->dp_clockintr, dp->dp_nsecs,
-			    CPU_INFO_UNIT(dp->dp_cpu), MAXCPUS);
 			clockintr_advance(&dp->dp_clockintr, dp->dp_nsecs);
 		}
 	}