From: "Joel Fernandes (Google)" <joel@joelfernandes.org>
To: Nishanth Aravamudan <naravamudan@digitalocean.com>,
Julien Desfossez <jdesfossez@digitalocean.com>,
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Aaron Lu <aaron.lwe@gmail.com>,
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tglx@linutronix.de, linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, torvalds@linux-foundation.org,
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Hao Luo <haoluo@google.com>,
amistry@google.com, Borislav Petkov <bp@alien8.de>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>, Mel Gorman <mgorman@suse.de>,
Mike Rapoport <rppt@kernel.org>,
thomas.lendacky@amd.com, Tony Luck <tony.luck@intel.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT))
Subject: [RFC 2/2] sched/debug: Add debug information about whether coresched is enabled
Date: Wed, 11 Nov 2020 16:10:11 -0500 [thread overview]
Message-ID: <20201111211011.1381848-3-joel@joelfernandes.org> (raw)
In-Reply-To: <20201111211011.1381848-1-joel@joelfernandes.org>
It is useful to see whether coresched is enabled or not, especially in
devices that don't need it. Add information about the same to
/proc/sched_debug.
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
kernel/sched/debug.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 88bf45267672..935b68be18cd 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -782,6 +782,10 @@ static void sched_debug_header(struct seq_file *m)
"sysctl_sched_tunable_scaling",
sysctl_sched_tunable_scaling,
sched_tunable_scaling_names[sysctl_sched_tunable_scaling]);
+#ifdef CONFIG_SCHED_CORE
+ SEQ_printf(m, " .%-40s: %d\n", "core_sched_enabled",
+ !!static_branch_likely(&__sched_core_enabled));
+#endif
SEQ_printf(m, "\n");
}
--
2.29.2.222.g5d2a92d10f8-goog
prev parent reply other threads:[~2020-11-11 21:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-11 21:10 [RFC 0/2] Do not slow down some AMD devices with coresched Joel Fernandes (Google)
2020-11-11 21:10 ` [RFC 1/2] x86/bugs: Disable coresched on hardware that does not need it Joel Fernandes (Google)
2020-11-11 21:14 ` Joel Fernandes
2020-11-11 22:00 ` Alexander Graf
2020-11-11 22:13 ` Joel Fernandes
2020-11-11 22:15 ` Joel Fernandes
2020-11-11 22:29 ` Alexander Graf
2020-11-12 13:40 ` Joel Fernandes
2020-11-12 14:40 ` Joel Fernandes
2020-11-12 20:09 ` Alexander Graf
2020-11-13 15:55 ` Joel Fernandes
2020-11-16 15:37 ` Alexander Graf
2020-11-12 14:52 ` Alexander Graf
2020-11-12 15:28 ` Joel Fernandes
2020-11-12 20:01 ` Alexander Graf
2020-11-11 21:10 ` Joel Fernandes (Google) [this message]
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