linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
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


  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20221122203532.15013-6-ricardo.neri-calderon@linux.intel.com \
    --to=ricardo.neri-calderon@linux.intel.com \
    --cc=bristot@redhat.com \
    --cc=bsegall@google.com \
    --cc=dietmar.eggemann@arm.com \
    --cc=juri.lelli@redhat.com \
    --cc=len.brown@intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mgorman@suse.de \
    --cc=peterz@infradead.org \
    --cc=rafael.j.wysocki@intel.com \
    --cc=ravi.v.shankar@intel.com \
    --cc=ricardo.neri@intel.com \
    --cc=rostedt@goodmis.org \
    --cc=srinivas.pandruvada@linux.intel.com \
    --cc=tim.c.chen@intel.com \
    --cc=tim.c.chen@linux.intel.com \
    --cc=vincent.guittot@linaro.org \
    --cc=vschneid@redhat.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).