Date: Fri, 11 May 2018 04:47:06 +0000 (UTC) From: Matt Macy <mmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r333479 - head/sys/tests/epoch Message-ID: <201805110447.w4B4l69i063046@repo.freebsd.org>
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Author: mmacy Date: Fri May 11 04:47:05 2018 New Revision: 333479 URL: https://svnweb.freebsd.org/changeset/base/333479 Log: Test priority handling in epoch test. - Double the number of test threads to mp_ncpu*2 - Give each thread a different scheduling priority Modified: head/sys/tests/epoch/epoch_test.c Modified: head/sys/tests/epoch/epoch_test.c ============================================================================== --- head/sys/tests/epoch/epoch_test.c Fri May 11 02:04:01 2018 (r333478) +++ head/sys/tests/epoch/epoch_test.c Fri May 11 04:47:05 2018 (r333479) @@ -38,6 +38,8 @@ __FBSDID("$FreeBSD$"); #include <sys/malloc.h> #include <sys/module.h> #include <sys/mutex.h> +#include <sys/proc.h> +#include <sys/sched.h> #include <sys/smp.h> #include <sys/sysctl.h> #include <sys/systm.h> @@ -132,16 +134,24 @@ static struct epoch_test_instance etilist[MAXCPU]; static int test_modinit(void) { - int i, error; + struct thread *td; + int i, error, pri_range, pri_off; + pri_range = PRI_MIN_TIMESHARE - PRI_MIN_REALTIME; test_epoch = epoch_alloc(); - for (i = 0; i < mp_ncpus; i++) { + for (i = 0; i < mp_ncpus*2; i++) { etilist[i].threadid = i; error = kthread_add(testloop, &etilist[i], NULL, &testthreads[i], 0, 0, "epoch_test_%d", i); if (error) { printf("%s: kthread_add(epoch_test): error %d", __func__, error); + } else { + pri_off = (i*4)%pri_range; + td = testthreads[i]; + thread_lock(td); + sched_prio(td, PRI_MIN_REALTIME + pri_off); + thread_unlock(td); } } inited = 1;
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