From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Linux PM <linux-pm@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Christian Loehle <christian.loehle@arm.com>,
Doug Smythies <dsmythies@telus.net>
Subject: [PATCH v1 3/5] cpuidle: governors: teo: Refine tick_intercepts vs total events check
Date: Wed, 14 Jan 2026 20:45:30 +0100 [thread overview]
Message-ID: <10793374.nUPlyArG6x@rafael.j.wysocki> (raw)
In-Reply-To: <2257365.irdbgypaU6@rafael.j.wysocki>
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Use 2/3 as the proportion coefficient in the check comparing
cpu_data->tick_intercepts with cpu_data->total because it is close
enough to the current one (5/8) and it allows of more straightforward
interpretation (on average, intercepts within the tick period length
are twice as frequent as other events).
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/cpuidle/governors/teo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/cpuidle/governors/teo.c
+++ b/drivers/cpuidle/governors/teo.c
@@ -485,7 +485,7 @@ constraint:
* total wakeup events, do not stop the tick.
*/
if (drv->states[idx].target_residency_ns < TICK_NSEC &&
- cpu_data->tick_intercepts > cpu_data->total / 2 + cpu_data->total / 8)
+ 3 * cpu_data->tick_intercepts >= 2 * cpu_data->total)
duration_ns = TICK_NSEC / 2;
end:
next prev parent reply other threads:[~2026-01-14 19:48 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-14 19:42 [PATCH v1 0/5] cpuidle: governors: teo: Wakeup events classification change and some refinements Rafael J. Wysocki
2026-01-14 19:44 ` [PATCH v1 1/5] cpuidle: governors: teo: Avoid selecting states with zero-size bins Rafael J. Wysocki
2026-01-21 13:09 ` Christian Loehle
2026-01-23 20:46 ` Rafael J. Wysocki
2026-01-26 9:18 ` Christian Loehle
2026-01-26 11:40 ` Rafael J. Wysocki
2026-01-26 12:05 ` Christian Loehle
2026-01-14 19:44 ` [PATCH v1 2/5] cpuidle: governors: teo: Avoid fake intercepts produced by tick Rafael J. Wysocki
2026-01-21 13:34 ` Christian Loehle
2026-01-14 19:45 ` Rafael J. Wysocki [this message]
2026-01-21 13:36 ` [PATCH v1 3/5] cpuidle: governors: teo: Refine tick_intercepts vs total events check Christian Loehle
2026-01-14 19:46 ` [PATCH v1 4/5] cpuidle: governors: teo: Adjust the classification of wakeup events Rafael J. Wysocki
2026-01-14 19:47 ` [PATCH v1 5/5] cpuidle: governors: teo: Refine intercepts-based idle state lookup Rafael J. Wysocki
2026-01-16 11:52 ` [PATCH v1 0/5] cpuidle: governors: teo: Wakeup events classification change and some refinements Christian Loehle
2026-01-16 12:29 ` Rafael J. Wysocki
2026-01-19 9:53 ` Christian Loehle
2026-01-19 12:09 ` Rafael J. Wysocki
2026-01-19 16:20 ` Doug Smythies
2026-01-20 15:29 ` [Update][PATCH v1.1 4/5] cpuidle: governors: teo: Adjust the classification of wakeup events Rafael J. Wysocki
2026-01-25 17:21 ` Doug Smythies
2026-01-25 19:38 ` Christian Loehle
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