Christian Loehle 4b20b07ce7 cpuidle: teo: Don't count non-existent intercepts ... When bailing out early, teo will not query the sleep length anymore since commit 6da8f9ba5a ("cpuidle: teo: Skip tick_nohz_get_sleep_length() call in some cases") with an expected sleep_length_ns value of KTIME_MAX. This lead to state0 accumulating lots of 'intercepts' because the actually measured sleep length was < KTIME_MAX, so query the sleep length instead for teo to recognize if it still is in an intercept-likely scenario without alternating between the two modes. Fundamentally we can only do one of the two: 1. Skip sleep_length_ns query when we think intercept is likely. 2. Have accurate data if sleep_length_ns is actually intercepted when we believe it is currently intercepted. Previously teo did the former while this patch chooses the latter as the additional time it takes to query the sleep length was found to be negligible and the variants of option 1 (count all unknowns as misses or count all unknown as hits) had significant regressions (as misses had lots of too shallow idle state selections and as hits had terrible performance in intercept-heavy workloads). Fixes: 6da8f9ba5a ("cpuidle: teo: Skip tick_nohz_get_sleep_length() call in some cases") Link: https://patch.msgid.link/c40acf72-010f-4a8b-80e4-33f133ba266b@arm.com Signed-off-by: Christian Loehle <christian.loehle@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2024-07-01 18:58:55 +02:00
..
governors	cpuidle: teo: Don't count non-existent intercepts	2024-07-01 18:58:55 +02:00
coupled.c	cpuidle: Avoid explicit cpumask allocation on stack	2024-04-24 21:23:49 +02:00
cpuidle-arm.c
cpuidle-at91.c
cpuidle-big_little.c
cpuidle-calxeda.c
cpuidle-clps711x.c
cpuidle-cps.c
cpuidle-exynos.c
cpuidle-haltpoll.c	cpuidle: haltpoll: add missing MODULE_DESCRIPTION() macro	2024-06-14 18:15:38 +02:00
cpuidle-kirkwood.c	cpuidle: kirkwood: Convert to platform remove callback returning void	2024-04-23 09:21:48 +02:00
cpuidle-mvebu-v7.c
cpuidle-powernv.c
cpuidle-psci-domain.c	cpuidle: psci: Update init level to core_initcall()	2024-04-04 13:02:28 +02:00
cpuidle-psci.c	cpuidle: psci: Drop superfluous wrappers psci_dt_attach|detach_cpu()	2024-04-04 13:00:39 +02:00
cpuidle-psci.h	cpuidle: psci: Drop superfluous wrappers psci_dt_attach|detach_cpu()	2024-04-04 13:00:39 +02:00
cpuidle-pseries.c
cpuidle-qcom-spm.c
cpuidle-riscv-sbi.c	cpuidle: RISC-V: Move few functions to arch/riscv	2024-03-19 17:51:38 -07:00
cpuidle-tegra.c
cpuidle-ux500.c
cpuidle-zynq.c
cpuidle.c	x86/mm: delete unused cpu argument to leave_mm()	2024-02-22 10:24:41 -08:00
cpuidle.h
driver.c	cpuidle: Avoid potential overflow in integer multiplication	2024-02-12 17:07:49 +01:00
dt_idle_genpd.c
dt_idle_genpd.h
dt_idle_states.c	cpuidle: dt: Replace deprecated strncpy() with strscpy()	2023-09-29 14:48:31 -07:00
dt_idle_states.h
governor.c
Kconfig
Kconfig.arm
Kconfig.mips
Kconfig.powerpc
Kconfig.riscv
Makefile
poll_state.c
sysfs.c