linux-kernel - [PATCH 07/12] sched: Seperate out build of SMT sched groups from __build_sched

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090818105751.GH29515@alberich.amd.com>
Date:	Tue, 18 Aug 2009 12:57:51 +0200
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>
CC:	linux-kernel@...r.kernel.org
Subject: [PATCH 07/12] sched: Seperate out build of SMT sched groups from
	__build_sched_domains


... to further strip down __build_sched_domains().

Signed-off-by: Andreas Herrmann <andreas.herrmann3@....com>
---
 kernel/sched.c |   31 ++++++++++++++++++++-----------
 1 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index a253ca6..cd00d9e 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -8669,6 +8669,25 @@ static struct sched_domain *__build_smt_sched_domain(struct s_data *d,
 	return sd;
 }
 
+static void build_sched_groups(struct s_data *d, enum sched_domain_level l,
+			       const struct cpumask *cpu_map, int cpu)
+{
+	switch (l) {
+#ifdef CONFIG_SCHED_SMT
+	case SD_LV_SIBLING: /* set up CPU (sibling) groups */
+		cpumask_and(d->this_sibling_map, cpu_map,
+			    topology_thread_cpumask(cpu));
+		if (cpu == cpumask_first(d->this_sibling_map))
+			init_sched_build_groups(d->this_sibling_map, cpu_map,
+						&cpu_to_cpu_group,
+						d->send_covered, d->tmpmask);
+		break;
+#endif
+	default:
+		break;
+	}
+}
+
 /*
  * Build sched domains for a given set of cpus and attach the sched domains
  * to the individual cpus
@@ -8703,19 +8722,9 @@ static int __build_sched_domains(const struct cpumask *cpu_map,
 		sd = __build_smt_sched_domain(&d, cpu_map, attr, sd, i);
 	}
 
-#ifdef CONFIG_SCHED_SMT
-	/* Set up CPU (sibling) groups */
 	for_each_cpu(i, cpu_map) {
-		cpumask_and(d.this_sibling_map,
-			    topology_thread_cpumask(i), cpu_map);
-		if (i != cpumask_first(d.this_sibling_map))
-			continue;
-
-		init_sched_build_groups(d.this_sibling_map, cpu_map,
-					&cpu_to_cpu_group,
-					d.send_covered, d.tmpmask);
+		build_sched_groups(&d, SD_LV_SIBLING, cpu_map, i);
 	}
-#endif
 
 #ifdef CONFIG_SCHED_MC
 	/* Set up multi-core groups */
-- 
1.6.4



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/