From: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
To: "Peter Zijlstra (Intel)" <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>
Cc: Ricardo Neri <ricardo.neri@intel.com>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
Ben Segall <bsegall@google.com>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Len Brown <len.brown@intel.com>, Mel Gorman <mgorman@suse.de>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Steven Rostedt <rostedt@goodmis.org>,
Tim Chen <tim.c.chen@linux.intel.com>,
Valentin Schneider <vschneid@redhat.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
"Tim C . Chen" <tim.c.chen@intel.com>
Subject: [PATCH v2 5/7] x86/sched: Remove SD_ASYM_PACKING from the "SMT" domain
Date: Tue, 22 Nov 2022 12:35:30 -0800 [thread overview]
Message-ID: <20221122203532.15013-6-ricardo.neri-calderon@linux.intel.com> (raw)
In-Reply-To: <20221122203532.15013-1-ricardo.neri-calderon@linux.intel.com>
There is no difference between any of the SMT siblings of a physical core.
asym_packing load balancing is not needed among siblings.
When balancing load among physical cores, the scheduler now considers the
state of the siblings when checking the priority of a CPU.
Cc: Ben Segall <bsegall@google.com>
Cc: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tim C. Chen <tim.c.chen@intel.com>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
---
Changes since v1:
* Introduced this patch.
---
arch/x86/kernel/smpboot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 3f3ea0287f69..c3de98224cb4 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -545,7 +545,7 @@ static int x86_core_flags(void)
#ifdef CONFIG_SCHED_SMT
static int x86_smt_flags(void)
{
- return cpu_smt_flags() | x86_sched_itmt_flags();
+ return cpu_smt_flags();
}
#endif
#ifdef CONFIG_SCHED_CLUSTER
--
2.25.1
next prev parent reply other threads:[~2022-11-22 20:28 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-22 20:35 [PATCH v2 0/7] x86/sched: Avoid unnecessary migrations within SMT domains Ricardo Neri
2022-11-22 20:35 ` [PATCH v2 1/7] sched/fair: Generalize asym_packing logic for SMT local sched group Ricardo Neri
2022-12-06 17:22 ` Dietmar Eggemann
2022-12-12 17:53 ` Ricardo Neri
2022-12-21 13:03 ` Dietmar Eggemann
2022-12-22 4:32 ` Ricardo Neri
2022-12-22 11:12 ` Dietmar Eggemann
2022-12-23 13:11 ` Ricardo Neri
2022-12-22 16:55 ` Valentin Schneider
2022-12-29 4:00 ` Ricardo Neri
2023-01-11 16:04 ` Valentin Schneider
2023-01-13 19:02 ` Ricardo Neri
2023-01-16 4:05 ` Ricardo Neri
2023-01-16 19:07 ` Valentin Schneider
2023-01-17 12:49 ` Ricardo Neri
2022-11-22 20:35 ` [PATCH v2 2/7] sched: Prepare sched_asym_prefer() to handle idle state of SMT siblings Ricardo Neri
2022-11-22 20:35 ` [PATCH v2 3/7] sched: Teach arch_asym_cpu_priority() the " Ricardo Neri
2022-12-06 17:54 ` Dietmar Eggemann
2022-12-12 17:54 ` Ricardo Neri
2022-12-21 17:12 ` Dietmar Eggemann
2022-12-22 4:55 ` Ricardo Neri
2022-12-22 16:56 ` Valentin Schneider
2022-11-22 20:35 ` [PATCH v2 4/7] sched/fair: Introduce sched_smt_siblings_idle() Ricardo Neri
2022-12-06 18:03 ` Dietmar Eggemann
2022-12-12 17:54 ` Ricardo Neri
2022-12-22 11:12 ` Dietmar Eggemann
2022-12-22 16:56 ` Valentin Schneider
2022-12-24 5:28 ` Ricardo Neri
2022-12-28 15:29 ` Chen Yu
2022-12-30 0:17 ` Ricardo Neri
2023-01-10 19:21 ` Valentin Schneider
2022-11-22 20:35 ` Ricardo Neri [this message]
2022-12-08 16:03 ` [PATCH v2 5/7] x86/sched: Remove SD_ASYM_PACKING from the "SMT" domain Ionela Voinescu
2022-12-14 16:59 ` Ricardo Neri
2022-12-15 16:48 ` Valentin Schneider
2022-12-20 0:42 ` Ricardo Neri
2022-12-22 16:56 ` Valentin Schneider
2022-12-29 19:02 ` Ricardo Neri
2023-01-10 19:17 ` Valentin Schneider
2023-01-13 1:31 ` Ricardo Neri
2022-11-22 20:35 ` [PATCH v2 6/7] x86/sched/itmt: Give all SMT siblings of a core the same priority Ricardo Neri
2022-11-22 20:35 ` [PATCH v2 7/7] x86/sched/itmt: Consider the idle state of SMT siblings Ricardo Neri
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