| Message ID | 20241004094101.113349-1-sakari.ailus@linux.intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | treewide: Switch to __pm_runtime_put_autosuspend() | expand |
Hi Ulf, On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > On Fri, 4 Oct 2024 at 11:41, Sakari Ailus <sakari.ailus@linux.intel.com> wrote: > > > > Hello everyone, > > > > This set will switch the users of pm_runtime_put_autosuspend() to > > __pm_runtime_put_autosuspend() while the former will soon be re-purposed > > to include a call to pm_runtime_mark_last_busy(). The two are almost > > always used together, apart from bugs which are likely common. Going > > forward, most new users should be using pm_runtime_put_autosuspend(). > > > > Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > > I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > > and pm_runtime_mark_last_busy(). > > That sounds like it could cause a lot of churns. > > Why not add a new helper function that does the > pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > things? Then we can start moving users over to this new interface, > rather than having this intermediate step? I think the API would be nicer if we used the shortest and simplest function names for the most common use cases. Following pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that most common use case. That's why I like Sakari's approach of repurposing pm_runtime_put_autosuspend(), and introducing __pm_runtime_put_autosuspend() for the odd cases where pm_runtime_mark_last_busy() shouldn't be called. > > The diff in these patches have been generated using the following > > Coccinelle script (besides a manual change in > > drivers/iio/magnetometer/af8133j.c): > > > > ----------8<------------------- > > @@ > > expression E1; > > > > @@ > > > > - pm_runtime_put_autosuspend(E1) > > + __pm_runtime_put_autosuspend(E1) > > ----------8<------------------- > > > > These patches are on top of today's linux-next (i.e. next-20241004). > > > > Sakari Ailus (51): > > accel/ivpu: Switch to __pm_runtime_put_autosuspend() > > bluetooth: Switch to __pm_runtime_put_autosuspend() > > bus: sunxi-rsb: Switch to __pm_runtime_put_autosuspend() > > hwrng: Switch to __pm_runtime_put_autosuspend() > > clk: Switch to __pm_runtime_put_autosuspend() > > crypto: Switch to __pm_runtime_put_autosuspend() > > dmaengine: Switch to __pm_runtime_put_autosuspend() > > gpio: Switch to __pm_runtime_put_autosuspend() > > drm/amd: Switch to __pm_runtime_put_autosuspend() > > drm/nouveau: Switch to __pm_runtime_put_autosuspend() > > drm/radeon: Switch to __pm_runtime_put_autosuspend() > > drm/panfrost: Switch to __pm_runtime_put_autosuspend() > > drivers: drm: Switch to __pm_runtime_put_autosuspend() > > HSI: omap_ssi_port: Switch to __pm_runtime_put_autosuspend() > > stm class: Switch to __pm_runtime_put_autosuspend() > > i2c: Switch to __pm_runtime_put_autosuspend() > > i3c: master: svc: Switch to __pm_runtime_put_autosuspend() > > i3c: dw: Switch to __pm_runtime_put_autosuspend() > > iio: Switch to __pm_runtime_put_autosuspend() > > Input: omap4-keypad: Switch to __pm_runtime_put_autosuspend() > > Input: cs40l50: Switch to __pm_runtime_put_autosuspend() > > iommu/arm-smmu: Switch to __pm_runtime_put_autosuspend() > > irqchip/imx-irqsteer: Switch to __pm_runtime_put_autosuspend() > > mailbox: mtk-cmdq-mailbox: Switch to __pm_runtime_put_autosuspend() > > media: Switch to __pm_runtime_put_autosuspend() > > mfd: Switch to __pm_runtime_put_autosuspend() > > mei: Switch to __pm_runtime_put_autosuspend() > > mmc: Switch to __pm_runtime_put_autosuspend() > > mtd: rawnand: gpmi: Switch to __pm_runtime_put_autosuspend() > > net: Switch to __pm_runtime_put_autosuspend() > > nfc: trf7970a: Switch to __pm_runtime_put_autosuspend() > > PCI/portdrv: Switch to __pm_runtime_put_autosuspend() > > phy: motorola: phy-mapphone-mdm6600: Switch to > > __pm_runtime_put_autosuspend() > > phy: ti: phy-twl4030-usb: Switch to __pm_runtime_put_autosuspend() > > power: Switch to __pm_runtime_put_autosuspend() > > pwm: img: Switch to __pm_runtime_put_autosuspend() > > regulator: stm32-vrefbuf: Switch to __pm_runtime_put_autosuspend() > > remoteproc: omap: Switch to __pm_runtime_put_autosuspend() > > slimbus: Switch to __pm_runtime_put_autosuspend() > > soundwire: Switch to __pm_runtime_put_autosuspend() > > spi: Switch to __pm_runtime_put_autosuspend() > > staging: Switch to __pm_runtime_put_autosuspend() > > thunderbolt: Switch to __pm_runtime_put_autosuspend() > > serial: Switch to __pm_runtime_put_autosuspend() > > usb: Switch to __pm_runtime_put_autosuspend() > > w1: omap-hdq: Switch to __pm_runtime_put_autosuspend() > > staging: greybus: Switch to __pm_runtime_put_autosuspend() > > ALSA: hda: Switch to __pm_runtime_put_autosuspend() > > ASoC: Switch to __pm_runtime_put_autosuspend() > > ALSA: intel_hdmi: Switch to __pm_runtime_put_autosuspend() > > soc: apple: mailbox: Switch to __pm_runtime_put_autosuspend() > > > > drivers/accel/ivpu/ivpu_drv.c | 2 +- > > drivers/accel/ivpu/ivpu_pm.c | 8 +- > > drivers/bluetooth/btmtksdio.c | 2 +- > > drivers/bluetooth/hci_bcm.c | 6 +- > > drivers/bluetooth/hci_h5.c | 4 +- > > drivers/bluetooth/hci_intel.c | 6 +- > > drivers/bus/sunxi-rsb.c | 4 +- > > drivers/char/hw_random/cctrng.c | 2 +- > > drivers/char/hw_random/omap3-rom-rng.c | 2 +- > > drivers/clk/imx/clk-imx8qxp-lpcg.c | 2 +- > > drivers/clk/imx/clk-scu.c | 2 +- > > drivers/clk/qcom/lpassaudiocc-sc7280.c | 4 +- > > drivers/clk/qcom/lpasscorecc-sc7180.c | 4 +- > > drivers/crypto/ccree/cc_pm.c | 2 +- > > drivers/crypto/hisilicon/qm.c | 2 +- > > drivers/crypto/omap-aes-gcm.c | 2 +- > > drivers/crypto/omap-aes.c | 2 +- > > drivers/crypto/omap-des.c | 2 +- > > drivers/crypto/omap-sham.c | 2 +- > > drivers/crypto/rockchip/rk3288_crypto_ahash.c | 2 +- > > .../crypto/rockchip/rk3288_crypto_skcipher.c | 2 +- > > drivers/crypto/stm32/stm32-crc32.c | 4 +- > > drivers/crypto/stm32/stm32-cryp.c | 2 +- > > drivers/crypto/stm32/stm32-hash.c | 2 +- > > drivers/dma/at_xdmac.c | 24 +-- > > drivers/dma/pl330.c | 14 +- > > drivers/dma/qcom/bam_dma.c | 10 +- > > drivers/dma/qcom/hidma.c | 18 +- > > drivers/dma/qcom/hidma_dbg.c | 2 +- > > drivers/dma/qcom/hidma_mgmt.c | 4 +- > > drivers/dma/ste_dma40.c | 16 +- > > drivers/dma/ti/cppi41.c | 10 +- > > drivers/dma/xilinx/zynqmp_dma.c | 2 +- > > drivers/gpio/gpio-arizona.c | 10 +- > > drivers/gpio/gpio-mxc.c | 2 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 2 +- > > .../gpu/drm/amd/amdgpu/amdgpu_connectors.c | 16 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 120 ++++++------ > > drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 2 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 6 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 4 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c | 4 +- > > drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +- > > .../gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 4 +- > > drivers/gpu/drm/amd/amdkfd/kfd_process.c | 4 +- > > .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- > > drivers/gpu/drm/amd/pm/amdgpu_pm.c | 178 +++++++++--------- > > .../drm/bridge/analogix/analogix_dp_core.c | 2 +- > > drivers/gpu/drm/bridge/analogix/anx7625.c | 4 +- > > drivers/gpu/drm/bridge/parade-ps8640.c | 4 +- > > drivers/gpu/drm/bridge/ti-sn65dsi86.c | 14 +- > > drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 12 +- > > drivers/gpu/drm/exynos/exynos_drm_fimc.c | 4 +- > > drivers/gpu/drm/exynos/exynos_drm_g2d.c | 4 +- > > drivers/gpu/drm/exynos/exynos_drm_gsc.c | 6 +- > > drivers/gpu/drm/exynos/exynos_drm_rotator.c | 2 +- > > drivers/gpu/drm/exynos/exynos_drm_scaler.c | 2 +- > > drivers/gpu/drm/i915/intel_runtime_pm.c | 4 +- > > drivers/gpu/drm/imx/dcss/dcss-crtc.c | 2 +- > > drivers/gpu/drm/lima/lima_sched.c | 2 +- > > drivers/gpu/drm/msm/adreno/adreno_device.c | 2 +- > > drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- > > drivers/gpu/drm/msm/msm_gpu.c | 2 +- > > drivers/gpu/drm/msm/msm_iommu.c | 4 +- > > drivers/gpu/drm/msm/msm_submitqueue.c | 2 +- > > drivers/gpu/drm/nouveau/dispnv50/disp.c | 10 +- > > drivers/gpu/drm/nouveau/nouveau_connector.c | 4 +- > > drivers/gpu/drm/nouveau/nouveau_debugfs.c | 8 +- > > drivers/gpu/drm/nouveau/nouveau_display.c | 4 +- > > drivers/gpu/drm/nouveau/nouveau_drm.c | 10 +- > > drivers/gpu/drm/nouveau/nouveau_gem.c | 10 +- > > drivers/gpu/drm/panel/panel-edp.c | 8 +- > > .../gpu/drm/panel/panel-samsung-atna33xc20.c | 6 +- > > drivers/gpu/drm/panel/panel-simple.c | 6 +- > > drivers/gpu/drm/panfrost/panfrost_job.c | 4 +- > > drivers/gpu/drm/panfrost/panfrost_mmu.c | 4 +- > > drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 4 +- > > drivers/gpu/drm/panthor/panthor_device.c | 2 +- > > drivers/gpu/drm/panthor/panthor_sched.c | 6 +- > > drivers/gpu/drm/radeon/radeon_acpi.c | 2 +- > > drivers/gpu/drm/radeon/radeon_connectors.c | 20 +- > > drivers/gpu/drm/radeon/radeon_display.c | 6 +- > > drivers/gpu/drm/radeon/radeon_drv.c | 4 +- > > drivers/gpu/drm/radeon/radeon_fbdev.c | 4 +- > > drivers/gpu/drm/radeon/radeon_kms.c | 10 +- > > drivers/gpu/drm/tegra/submit.c | 2 +- > > drivers/gpu/drm/tidss/tidss_drv.c | 2 +- > > drivers/gpu/drm/vc4/vc4_v3d.c | 2 +- > > drivers/hsi/controllers/omap_ssi_port.c | 42 ++--- > > drivers/hwtracing/stm/core.c | 8 +- > > drivers/i2c/busses/i2c-amd-mp2-pci.c | 2 +- > > drivers/i2c/busses/i2c-amd-mp2.h | 2 +- > > drivers/i2c/busses/i2c-at91-master.c | 2 +- > > drivers/i2c/busses/i2c-cadence.c | 2 +- > > drivers/i2c/busses/i2c-davinci.c | 4 +- > > drivers/i2c/busses/i2c-designware-master.c | 2 +- > > drivers/i2c/busses/i2c-designware-pcidrv.c | 2 +- > > drivers/i2c/busses/i2c-hix5hd2.c | 2 +- > > drivers/i2c/busses/i2c-i801.c | 4 +- > > drivers/i2c/busses/i2c-img-scb.c | 6 +- > > drivers/i2c/busses/i2c-imx-lpi2c.c | 6 +- > > drivers/i2c/busses/i2c-imx.c | 4 +- > > drivers/i2c/busses/i2c-mv64xxx.c | 2 +- > > drivers/i2c/busses/i2c-nvidia-gpu.c | 4 +- > > drivers/i2c/busses/i2c-omap.c | 6 +- > > drivers/i2c/busses/i2c-qcom-cci.c | 2 +- > > drivers/i2c/busses/i2c-qcom-geni.c | 2 +- > > drivers/i2c/busses/i2c-qup.c | 4 +- > > drivers/i2c/busses/i2c-riic.c | 4 +- > > drivers/i2c/busses/i2c-rzv2m.c | 2 +- > > drivers/i2c/busses/i2c-sprd.c | 4 +- > > drivers/i2c/busses/i2c-stm32f7.c | 10 +- > > drivers/i2c/busses/i2c-xiic.c | 2 +- > > drivers/i3c/master/dw-i3c-master.c | 16 +- > > drivers/i3c/master/svc-i3c-master.c | 16 +- > > drivers/iio/accel/bmc150-accel-core.c | 2 +- > > drivers/iio/accel/bmi088-accel-core.c | 6 +- > > drivers/iio/accel/fxls8962af-core.c | 2 +- > > drivers/iio/accel/kxcjk-1013.c | 2 +- > > drivers/iio/accel/kxsd9.c | 6 +- > > drivers/iio/accel/mma8452.c | 2 +- > > drivers/iio/accel/mma9551_core.c | 2 +- > > drivers/iio/accel/msa311.c | 12 +- > > drivers/iio/adc/ab8500-gpadc.c | 2 +- > > drivers/iio/adc/at91-sama5d2_adc.c | 20 +- > > drivers/iio/adc/rcar-gyroadc.c | 2 +- > > drivers/iio/adc/stm32-adc-core.c | 2 +- > > drivers/iio/adc/stm32-adc.c | 12 +- > > drivers/iio/adc/sun4i-gpadc-iio.c | 4 +- > > drivers/iio/adc/ti-ads1015.c | 2 +- > > drivers/iio/adc/ti-ads1100.c | 2 +- > > drivers/iio/adc/ti-ads1119.c | 4 +- > > drivers/iio/chemical/atlas-sensor.c | 4 +- > > .../common/hid-sensors/hid-sensor-trigger.c | 2 +- > > drivers/iio/dac/stm32-dac.c | 6 +- > > drivers/iio/gyro/bmg160_core.c | 2 +- > > drivers/iio/gyro/fxas21002c_core.c | 2 +- > > drivers/iio/gyro/mpu3050-core.c | 6 +- > > drivers/iio/gyro/mpu3050-i2c.c | 2 +- > > .../iio/imu/inv_icm42600/inv_icm42600_accel.c | 10 +- > > .../imu/inv_icm42600/inv_icm42600_buffer.c | 2 +- > > .../iio/imu/inv_icm42600/inv_icm42600_gyro.c | 10 +- > > .../iio/imu/inv_icm42600/inv_icm42600_temp.c | 2 +- > > drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 14 +- > > drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c | 4 +- > > drivers/iio/imu/kmx61.c | 2 +- > > drivers/iio/light/apds9306.c | 6 +- > > drivers/iio/light/apds9960.c | 4 +- > > drivers/iio/light/bh1780.c | 2 +- > > drivers/iio/light/gp2ap002.c | 4 +- > > drivers/iio/light/isl29028.c | 2 +- > > drivers/iio/light/ltrf216a.c | 2 +- > > drivers/iio/light/pa12203001.c | 2 +- > > drivers/iio/light/rpr0521.c | 2 +- > > drivers/iio/light/tsl2583.c | 2 +- > > drivers/iio/light/tsl2591.c | 4 +- > > drivers/iio/light/us5182d.c | 2 +- > > drivers/iio/light/vcnl4000.c | 2 +- > > drivers/iio/light/vcnl4035.c | 2 +- > > drivers/iio/magnetometer/af8133j.c | 4 +- > > drivers/iio/magnetometer/ak8974.c | 4 +- > > drivers/iio/magnetometer/ak8975.c | 2 +- > > drivers/iio/magnetometer/bmc150_magn.c | 2 +- > > drivers/iio/magnetometer/tmag5273.c | 4 +- > > drivers/iio/magnetometer/yamaha-yas530.c | 4 +- > > drivers/iio/pressure/bmp280-core.c | 10 +- > > drivers/iio/pressure/icp10100.c | 2 +- > > drivers/iio/pressure/mpl115.c | 4 +- > > drivers/iio/pressure/zpa2326.c | 4 +- > > .../iio/proximity/pulsedlight-lidar-lite-v2.c | 2 +- > > drivers/iio/proximity/srf04.c | 2 +- > > drivers/iio/temperature/mlx90614.c | 4 +- > > drivers/iio/temperature/mlx90632.c | 4 +- > > drivers/iio/temperature/mlx90635.c | 4 +- > > drivers/input/keyboard/omap4-keypad.c | 8 +- > > drivers/input/misc/cs40l50-vibra.c | 8 +- > > drivers/iommu/arm/arm-smmu/arm-smmu.c | 2 +- > > drivers/irqchip/irq-imx-irqsteer.c | 2 +- > > drivers/mailbox/mtk-cmdq-mailbox.c | 10 +- > > drivers/media/i2c/alvium-csi2.c | 2 +- > > drivers/media/i2c/ccs/ccs-core.c | 10 +- > > drivers/media/i2c/dw9719.c | 2 +- > > drivers/media/i2c/gc0308.c | 6 +- > > drivers/media/i2c/gc2145.c | 8 +- > > drivers/media/i2c/imx283.c | 6 +- > > drivers/media/i2c/imx290.c | 6 +- > > drivers/media/i2c/imx296.c | 4 +- > > drivers/media/i2c/imx415.c | 4 +- > > drivers/media/i2c/mt9m114.c | 12 +- > > drivers/media/i2c/ov2680.c | 2 +- > > drivers/media/i2c/ov4689.c | 6 +- > > drivers/media/i2c/ov5640.c | 8 +- > > drivers/media/i2c/ov5645.c | 6 +- > > drivers/media/i2c/ov5693.c | 2 +- > > drivers/media/i2c/ov64a40.c | 8 +- > > drivers/media/i2c/ov7251.c | 2 +- > > drivers/media/i2c/ov8858.c | 4 +- > > drivers/media/i2c/thp7312.c | 8 +- > > drivers/media/i2c/video-i2c.c | 8 +- > > .../media/platform/nvidia/tegra-vde/h264.c | 4 +- > > drivers/media/platform/qcom/venus/vdec.c | 4 +- > > drivers/media/platform/qcom/venus/venc.c | 4 +- > > .../platform/raspberrypi/pisp_be/pisp_be.c | 4 +- > > .../media/platform/st/sti/delta/delta-v4l2.c | 4 +- > > drivers/media/platform/st/sti/hva/hva-hw.c | 8 +- > > .../media/platform/verisilicon/hantro_drv.c | 2 +- > > drivers/media/rc/gpio-ir-recv.c | 2 +- > > drivers/mfd/arizona-irq.c | 2 +- > > drivers/mfd/cs40l50-core.c | 2 +- > > drivers/mfd/cs42l43.c | 2 +- > > drivers/misc/mei/client.c | 14 +- > > drivers/mmc/core/core.c | 4 +- > > drivers/mmc/host/atmel-mci.c | 4 +- > > drivers/mmc/host/dw_mmc-rockchip.c | 2 +- > > drivers/mmc/host/dw_mmc.c | 2 +- > > drivers/mmc/host/mmci.c | 2 +- > > drivers/mmc/host/omap_hsmmc.c | 6 +- > > drivers/mmc/host/sdhci-msm.c | 2 +- > > drivers/mmc/host/sdhci-of-at91.c | 2 +- > > drivers/mmc/host/sdhci-omap.c | 4 +- > > drivers/mmc/host/sdhci-pci-core.c | 2 +- > > drivers/mmc/host/sdhci-pxav3.c | 6 +- > > drivers/mmc/host/sdhci-sprd.c | 2 +- > > drivers/mmc/host/sdhci-xenon.c | 2 +- > > drivers/mmc/host/sdhci_am654.c | 2 +- > > drivers/mmc/host/tmio_mmc_core.c | 2 +- > > drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 10 +- > > drivers/net/ethernet/cadence/macb_main.c | 10 +- > > drivers/net/ethernet/freescale/fec_main.c | 16 +- > > drivers/net/ethernet/renesas/ravb_main.c | 8 +- > > drivers/net/ethernet/ti/davinci_mdio.c | 14 +- > > drivers/net/ipa/ipa_interrupt.c | 2 +- > > drivers/net/ipa/ipa_main.c | 2 +- > > drivers/net/ipa/ipa_modem.c | 8 +- > > drivers/net/ipa/ipa_smp2p.c | 4 +- > > drivers/net/ipa/ipa_uc.c | 4 +- > > drivers/net/wireless/ath/wil6210/pm.c | 2 +- > > drivers/net/wireless/ti/wl18xx/debugfs.c | 6 +- > > drivers/net/wireless/ti/wlcore/cmd.c | 2 +- > > drivers/net/wireless/ti/wlcore/debugfs.c | 22 +-- > > drivers/net/wireless/ti/wlcore/main.c | 72 +++---- > > drivers/net/wireless/ti/wlcore/scan.c | 2 +- > > drivers/net/wireless/ti/wlcore/sysfs.c | 2 +- > > drivers/net/wireless/ti/wlcore/testmode.c | 4 +- > > drivers/net/wireless/ti/wlcore/tx.c | 2 +- > > drivers/net/wireless/ti/wlcore/vendor_cmd.c | 6 +- > > drivers/net/wwan/qcom_bam_dmux.c | 4 +- > > drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 6 +- > > drivers/net/wwan/t7xx/t7xx_hif_dpmaif_rx.c | 6 +- > > drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.c | 4 +- > > drivers/nfc/trf7970a.c | 2 +- > > drivers/pci/pcie/portdrv.c | 2 +- > > drivers/phy/motorola/phy-mapphone-mdm6600.c | 4 +- > > drivers/phy/ti/phy-twl4030-usb.c | 8 +- > > drivers/power/supply/bq24190_charger.c | 28 +-- > > drivers/power/supply/twl4030_charger.c | 2 +- > > drivers/pwm/pwm-img.c | 4 +- > > drivers/regulator/stm32-vrefbuf.c | 12 +- > > drivers/remoteproc/omap_remoteproc.c | 6 +- > > drivers/slimbus/core.c | 2 +- > > drivers/slimbus/messaging.c | 4 +- > > drivers/soc/apple/mailbox.c | 2 +- > > drivers/soundwire/bus.c | 2 +- > > drivers/soundwire/cadence_master.c | 2 +- > > drivers/soundwire/qcom.c | 6 +- > > drivers/spi/atmel-quadspi.c | 10 +- > > drivers/spi/spi-cadence-quadspi.c | 4 +- > > drivers/spi/spi-cadence.c | 2 +- > > drivers/spi/spi-dw-pci.c | 2 +- > > drivers/spi/spi-fsl-espi.c | 4 +- > > drivers/spi/spi-fsl-lpspi.c | 4 +- > > drivers/spi/spi-imx.c | 6 +- > > drivers/spi/spi-mtk-nor.c | 2 +- > > drivers/spi/spi-omap2-mcspi.c | 6 +- > > drivers/spi/spi-pxa2xx-pci.c | 2 +- > > drivers/spi/spi-s3c64xx.c | 6 +- > > drivers/spi/spi-sprd.c | 2 +- > > drivers/spi/spi-stm32-qspi.c | 14 +- > > drivers/spi/spi-stm32.c | 4 +- > > drivers/spi/spi-ti-qspi.c | 4 +- > > drivers/spi/spi-zynqmp-gqspi.c | 2 +- > > drivers/spi/spi.c | 6 +- > > drivers/staging/greybus/gbphy.h | 2 +- > > drivers/staging/media/rkvdec/rkvdec.c | 2 +- > > drivers/thunderbolt/debugfs.c | 22 +-- > > drivers/thunderbolt/domain.c | 4 +- > > drivers/thunderbolt/icm.c | 14 +- > > drivers/thunderbolt/nhi.c | 2 +- > > drivers/thunderbolt/retimer.c | 4 +- > > drivers/thunderbolt/switch.c | 6 +- > > drivers/thunderbolt/tb.c | 18 +- > > drivers/thunderbolt/usb4_port.c | 4 +- > > drivers/tty/serial/8250/8250_omap.c | 18 +- > > drivers/tty/serial/8250/8250_port.c | 4 +- > > drivers/tty/serial/fsl_lpuart.c | 2 +- > > drivers/tty/serial/serial_core.c | 2 +- > > drivers/tty/serial/uartlite.c | 4 +- > > drivers/tty/serial/xilinx_uartps.c | 2 +- > > drivers/usb/cdns3/cdns3-gadget.c | 2 +- > > drivers/usb/cdns3/cdnsp-gadget.c | 2 +- > > drivers/usb/chipidea/core.c | 2 +- > > drivers/usb/chipidea/otg_fsm.c | 2 +- > > drivers/usb/dwc3/core.c | 2 +- > > drivers/usb/dwc3/dwc3-am62.c | 2 +- > > drivers/usb/dwc3/dwc3-imx8mp.c | 2 +- > > drivers/usb/gadget/udc/cdns2/cdns2-gadget.c | 2 +- > > drivers/usb/host/xhci-mtk.c | 2 +- > > drivers/usb/misc/apple-mfi-fastcharge.c | 2 +- > > drivers/usb/mtu3/mtu3_plat.c | 2 +- > > drivers/usb/musb/musb_core.c | 10 +- > > drivers/usb/musb/musb_debugfs.c | 10 +- > > drivers/usb/musb/musb_dsps.c | 2 +- > > drivers/usb/musb/musb_gadget.c | 8 +- > > drivers/usb/musb/omap2430.c | 2 +- > > drivers/w1/masters/omap_hdq.c | 10 +- > > include/linux/greybus/bundle.h | 2 +- > > sound/hda/hdac_device.c | 2 +- > > sound/pci/hda/cs35l41_hda.c | 8 +- > > sound/pci/hda/cs35l56_hda.c | 2 +- > > sound/pci/hda/hda_intel.c | 2 +- > > sound/pci/hda/tas2781_hda_i2c.c | 6 +- > > sound/soc/atmel/mchp-spdifrx.c | 12 +- > > sound/soc/codecs/arizona-jack.c | 12 +- > > sound/soc/codecs/arizona.c | 2 +- > > sound/soc/codecs/cs35l41.c | 4 +- > > sound/soc/codecs/cs35l45.c | 2 +- > > sound/soc/codecs/cs35l56-sdw.c | 4 +- > > sound/soc/codecs/cs35l56-shared.c | 2 +- > > sound/soc/codecs/cs35l56.c | 2 +- > > sound/soc/codecs/cs42l42-sdw.c | 2 +- > > sound/soc/codecs/cs42l42.c | 4 +- > > sound/soc/codecs/cs42l43-jack.c | 10 +- > > sound/soc/codecs/cs42l43.c | 4 +- > > sound/soc/codecs/hda.c | 6 +- > > sound/soc/codecs/madera.c | 6 +- > > sound/soc/codecs/max98363.c | 2 +- > > sound/soc/codecs/max98373-sdw.c | 2 +- > > sound/soc/codecs/rt1017-sdca-sdw.c | 2 +- > > sound/soc/codecs/rt1308-sdw.c | 2 +- > > sound/soc/codecs/rt1316-sdw.c | 2 +- > > sound/soc/codecs/rt1318-sdw.c | 2 +- > > sound/soc/codecs/rt1320-sdw.c | 2 +- > > sound/soc/codecs/rt5682-sdw.c | 2 +- > > sound/soc/codecs/rt700.c | 4 +- > > sound/soc/codecs/rt711-sdca.c | 4 +- > > sound/soc/codecs/rt711.c | 4 +- > > sound/soc/codecs/rt712-sdca-dmic.c | 2 +- > > sound/soc/codecs/rt712-sdca.c | 4 +- > > sound/soc/codecs/rt715-sdca.c | 2 +- > > sound/soc/codecs/rt715.c | 2 +- > > sound/soc/codecs/rt722-sdca.c | 4 +- > > sound/soc/codecs/wcd-mbhc-v2.c | 4 +- > > sound/soc/codecs/wsa881x.c | 2 +- > > sound/soc/codecs/wsa884x.c | 2 +- > > sound/soc/intel/atom/sst/sst_pvt.c | 2 +- > > sound/soc/intel/avs/core.c | 2 +- > > sound/soc/intel/avs/debugfs.c | 4 +- > > sound/soc/intel/avs/pcm.c | 2 +- > > sound/soc/intel/catpt/pcm.c | 12 +- > > sound/soc/intel/catpt/sysfs.c | 2 +- > > sound/soc/soc-component.c | 2 +- > > sound/soc/sof/control.c | 2 +- > > sound/soc/sof/debug.c | 2 +- > > sound/soc/sof/ipc3-dtrace.c | 2 +- > > sound/soc/sof/ipc4-loader.c | 2 +- > > sound/soc/sof/pcm.c | 2 +- > > sound/soc/sof/sof-client-ipc-flood-test.c | 2 +- > > .../soc/sof/sof-client-ipc-kernel-injector.c | 2 +- > > sound/soc/sof/sof-client-ipc-msg-injector.c | 2 +- > > sound/soc/sof/sof-client-probes.c | 6 +- > > sound/x86/intel_hdmi_audio.c | 6 +- > > 373 files changed, 1076 insertions(+), 1076 deletions(-)
Hi Ulf, On Tue, Oct 08, 2024 at 12:08:24AM +0200, Ulf Hansson wrote: > On Mon, 7 Oct 2024 at 20:49, Laurent Pinchart wrote: > > On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > > > On Fri, 4 Oct 2024 at 11:41, Sakari Ailus wrote: > > > > > > > > Hello everyone, > > > > > > > > This set will switch the users of pm_runtime_put_autosuspend() to > > > > __pm_runtime_put_autosuspend() while the former will soon be re-purposed > > > > to include a call to pm_runtime_mark_last_busy(). The two are almost > > > > always used together, apart from bugs which are likely common. Going > > > > forward, most new users should be using pm_runtime_put_autosuspend(). > > > > > > > > Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > > > > I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > > > > and pm_runtime_mark_last_busy(). > > > > > > That sounds like it could cause a lot of churns. > > > > > > Why not add a new helper function that does the > > > pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > > > things? Then we can start moving users over to this new interface, > > > rather than having this intermediate step? > > > > I think the API would be nicer if we used the shortest and simplest > > function names for the most common use cases. Following > > pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that > > most common use case. That's why I like Sakari's approach of repurposing > > pm_runtime_put_autosuspend(), and introducing > > __pm_runtime_put_autosuspend() for the odd cases where > > pm_runtime_mark_last_busy() shouldn't be called. > > Okay, so the reason for this approach is because we couldn't find a > short and descriptive name that could be used in favor of > pm_runtime_put_autosuspend(). Let me throw some ideas at it and maybe > you like it - or not. :-) I like the idea at least :-) > I don't know what options you guys discussed, but to me the entire > "autosuspend"-suffix isn't really that necessary in my opinion. There > are more ways than calling pm_runtime_put_autosuspend() that triggers > us to use the RPM_AUTO flag for rpm_suspend(). For example, just > calling pm_runtime_put() has the similar effect. To be honest, I'm lost there. pm_runtime_put() calls __pm_runtime_idle(RPM_GET_PUT | RPM_ASYNC), while pm_runtime_put_autosuspend() calls __pm_runtime_suspend(RPM_GET_PUT | RPM_ASYNC | RPM_AUTO). > > Moreover, it's similar for pm_runtime_mark_last_busy(), it's called > during rpm_resume() too, for example. So why bother about having > "mark_last_busy" in the new name too. > > That said, my suggestion is simply "pm_runtime_put_suspend". Can we do even better, and make pm_runtime_put() to handle autosuspend automatically when autosuspend is enabled ? > If you don't like it, I will certainly not object to your current > approach, even if I think it leads to unnecessary churns. > > [...] > > Kind regards > Uffe
On Tue, Oct 8, 2024 at 12:35 AM Ulf Hansson <ulf.hansson@linaro.org> wrote: > > On Tue, 8 Oct 2024 at 00:25, Laurent Pinchart > <laurent.pinchart@ideasonboard.com> wrote: > > > > Hi Ulf, > > > > On Tue, Oct 08, 2024 at 12:08:24AM +0200, Ulf Hansson wrote: > > > On Mon, 7 Oct 2024 at 20:49, Laurent Pinchart wrote: > > > > On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > > > > > On Fri, 4 Oct 2024 at 11:41, Sakari Ailus wrote: > > > > > > > > > > > > Hello everyone, > > > > > > > > > > > > This set will switch the users of pm_runtime_put_autosuspend() to > > > > > > __pm_runtime_put_autosuspend() while the former will soon be re-purposed > > > > > > to include a call to pm_runtime_mark_last_busy(). The two are almost > > > > > > always used together, apart from bugs which are likely common. Going > > > > > > forward, most new users should be using pm_runtime_put_autosuspend(). > > > > > > > > > > > > Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > > > > > > I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > > > > > > and pm_runtime_mark_last_busy(). > > > > > > > > > > That sounds like it could cause a lot of churns. > > > > > > > > > > Why not add a new helper function that does the > > > > > pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > > > > > things? Then we can start moving users over to this new interface, > > > > > rather than having this intermediate step? > > > > > > > > I think the API would be nicer if we used the shortest and simplest > > > > function names for the most common use cases. Following > > > > pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that > > > > most common use case. That's why I like Sakari's approach of repurposing > > > > pm_runtime_put_autosuspend(), and introducing > > > > __pm_runtime_put_autosuspend() for the odd cases where > > > > pm_runtime_mark_last_busy() shouldn't be called. > > > > > > Okay, so the reason for this approach is because we couldn't find a > > > short and descriptive name that could be used in favor of > > > pm_runtime_put_autosuspend(). Let me throw some ideas at it and maybe > > > you like it - or not. :-) > > > > I like the idea at least :-) > > > > > I don't know what options you guys discussed, but to me the entire > > > "autosuspend"-suffix isn't really that necessary in my opinion. There > > > are more ways than calling pm_runtime_put_autosuspend() that triggers > > > us to use the RPM_AUTO flag for rpm_suspend(). For example, just > > > calling pm_runtime_put() has the similar effect. > > > > To be honest, I'm lost there. pm_runtime_put() calls > > __pm_runtime_idle(RPM_GET_PUT | RPM_ASYNC), while > > pm_runtime_put_autosuspend() calls __pm_runtime_suspend(RPM_GET_PUT | > > RPM_ASYNC | RPM_AUTO). > > __pm_runtime_idle() ends up calling rpm_idle(), which may call > rpm_suspend() - if it succeeds to idle the device. In that case, it > tags on the RPM_AUTO flag in the call to rpm_suspend(). Quite similar > to what is happening when calling pm_runtime_put_autosuspend(). Right. For almost everybody, except for a small bunch of drivers that actually have a .runtime_idle() callback, pm_runtime_put() is literally equivalent to pm_runtime_put_autosuspend(). So really the question is why anyone who doesn't provide a .runtime_idle() callback bothers with using this special pm_runtime_put_autosuspend() thing, which really means "do a runtime_put(), but skip my .runtime_idle() callback". > > > > > > > > Moreover, it's similar for pm_runtime_mark_last_busy(), it's called > > > during rpm_resume() too, for example. So why bother about having > > > "mark_last_busy" in the new name too. > > > > > > That said, my suggestion is simply "pm_runtime_put_suspend". > > > > Can we do even better, and make pm_runtime_put() to handle autosuspend > > automatically when autosuspend is enabled ? > > As stated above, this is already the case. What really is needed appears to be a combination of pm_runtime_mark_last_busy() with pm_runtime_put(). Granted, pm_runtime_put() could do the pm_runtime_mark_last_busy() thing automatically if autosuspend is enabled and the only consequence of it might be delaying a suspend of the device until its autosuspend timer expires, which should not be a problem in the vast majority of cases.
Hello, On Mon, Oct 07, 2024 at 09:49:24PM +0300, Laurent Pinchart wrote: > On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > > On Fri, 4 Oct 2024 at 11:41, Sakari Ailus <sakari.ailus@linux.intel.com> wrote: > > > > > > Hello everyone, > > > > > > This set will switch the users of pm_runtime_put_autosuspend() to > > > __pm_runtime_put_autosuspend() while the former will soon be re-purposed > > > to include a call to pm_runtime_mark_last_busy(). The two are almost > > > always used together, apart from bugs which are likely common. Going > > > forward, most new users should be using pm_runtime_put_autosuspend(). > > > > > > Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > > > I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > > > and pm_runtime_mark_last_busy(). > > > > That sounds like it could cause a lot of churns. > > > > Why not add a new helper function that does the > > pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > > things? Then we can start moving users over to this new interface, > > rather than having this intermediate step? > > I think the API would be nicer if we used the shortest and simplest > function names for the most common use cases. Following > pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that > most common use case. That's why I like Sakari's approach of repurposing > pm_runtime_put_autosuspend(), and introducing > __pm_runtime_put_autosuspend() for the odd cases where > pm_runtime_mark_last_busy() shouldn't be called. That's ok for me. However this patch series isn't the optimal path to there because most drivers (i.e. those that already today do pm_runtime_mark_last_busy() in combination with pm_runtime_put_autosuspend()) have to be patched twice. The saner route is: Only convert the drivers with a sole pm_runtime_put_autosuspend() (i.e. without pm_runtime_mark_last_busy()) to __pm_runtime_put_autosuspend(). Then add the mark_last_busy() bits to pm_runtime_put_autosuspend() and then drop the explicit calls to pm_runtime_mark_last_busy() before pm_runtime_put_autosuspend(). (Note this doesn't take into account Rafael's position that pm_runtime_put() might be the saner option. My argument applies for that conversion analogously.) Best regards Uwe
On Tue, Oct 8, 2024 at 8:24 PM Rafael J. Wysocki <rafael@kernel.org> wrote: > > On Tue, Oct 8, 2024 at 12:35 AM Ulf Hansson <ulf.hansson@linaro.org> wrote: > > > > On Tue, 8 Oct 2024 at 00:25, Laurent Pinchart > > <laurent.pinchart@ideasonboard.com> wrote: > > > > > > Hi Ulf, > > > > > > On Tue, Oct 08, 2024 at 12:08:24AM +0200, Ulf Hansson wrote: > > > > On Mon, 7 Oct 2024 at 20:49, Laurent Pinchart wrote: > > > > > On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > > > > > > On Fri, 4 Oct 2024 at 11:41, Sakari Ailus wrote: > > > > > > > > > > > > > > Hello everyone, > > > > > > > > > > > > > > This set will switch the users of pm_runtime_put_autosuspend() to > > > > > > > __pm_runtime_put_autosuspend() while the former will soon be re-purposed > > > > > > > to include a call to pm_runtime_mark_last_busy(). The two are almost > > > > > > > always used together, apart from bugs which are likely common. Going > > > > > > > forward, most new users should be using pm_runtime_put_autosuspend(). > > > > > > > > > > > > > > Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > > > > > > > I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > > > > > > > and pm_runtime_mark_last_busy(). > > > > > > > > > > > > That sounds like it could cause a lot of churns. > > > > > > > > > > > > Why not add a new helper function that does the > > > > > > pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > > > > > > things? Then we can start moving users over to this new interface, > > > > > > rather than having this intermediate step? > > > > > > > > > > I think the API would be nicer if we used the shortest and simplest > > > > > function names for the most common use cases. Following > > > > > pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that > > > > > most common use case. That's why I like Sakari's approach of repurposing > > > > > pm_runtime_put_autosuspend(), and introducing > > > > > __pm_runtime_put_autosuspend() for the odd cases where > > > > > pm_runtime_mark_last_busy() shouldn't be called. > > > > > > > > Okay, so the reason for this approach is because we couldn't find a > > > > short and descriptive name that could be used in favor of > > > > pm_runtime_put_autosuspend(). Let me throw some ideas at it and maybe > > > > you like it - or not. :-) > > > > > > I like the idea at least :-) > > > > > > > I don't know what options you guys discussed, but to me the entire > > > > "autosuspend"-suffix isn't really that necessary in my opinion. There > > > > are more ways than calling pm_runtime_put_autosuspend() that triggers > > > > us to use the RPM_AUTO flag for rpm_suspend(). For example, just > > > > calling pm_runtime_put() has the similar effect. > > > > > > To be honest, I'm lost there. pm_runtime_put() calls > > > __pm_runtime_idle(RPM_GET_PUT | RPM_ASYNC), while > > > pm_runtime_put_autosuspend() calls __pm_runtime_suspend(RPM_GET_PUT | > > > RPM_ASYNC | RPM_AUTO). > > > > __pm_runtime_idle() ends up calling rpm_idle(), which may call > > rpm_suspend() - if it succeeds to idle the device. In that case, it > > tags on the RPM_AUTO flag in the call to rpm_suspend(). Quite similar > > to what is happening when calling pm_runtime_put_autosuspend(). > > Right. > > For almost everybody, except for a small bunch of drivers that > actually have a .runtime_idle() callback, pm_runtime_put() is > literally equivalent to pm_runtime_put_autosuspend(). > > So really the question is why anyone who doesn't provide a > .runtime_idle() callback bothers with using this special > pm_runtime_put_autosuspend() thing, which really means "do a > runtime_put(), but skip my .runtime_idle() callback". > > > > > > > > > > > > Moreover, it's similar for pm_runtime_mark_last_busy(), it's called > > > > during rpm_resume() too, for example. So why bother about having > > > > "mark_last_busy" in the new name too. > > > > > > > > That said, my suggestion is simply "pm_runtime_put_suspend". > > > > > > Can we do even better, and make pm_runtime_put() to handle autosuspend > > > automatically when autosuspend is enabled ? > > > > As stated above, this is already the case. > > What really is needed appears to be a combination of > pm_runtime_mark_last_busy() with pm_runtime_put(). > > Granted, pm_runtime_put() could do the pm_runtime_mark_last_busy() > thing automatically if autosuspend is enabled and the only consequence > of it might be delaying a suspend of the device until its autosuspend > timer expires, which should not be a problem in the vast majority of > cases. That said, it is likely better to avoid surprising the current users of pm_runtime_put() and define something like static inline void pm_runtime_touch_and_put(struct device *dev) { pm_runtime_mark_last_busy(dev); pm_runtime_put(dev); }
On Tue, 8 Oct 2024 at 20:25, Rafael J. Wysocki <rafael@kernel.org> wrote: > > On Tue, Oct 8, 2024 at 12:35 AM Ulf Hansson <ulf.hansson@linaro.org> wrote: > > > > On Tue, 8 Oct 2024 at 00:25, Laurent Pinchart > > <laurent.pinchart@ideasonboard.com> wrote: > > > > > > Hi Ulf, > > > > > > On Tue, Oct 08, 2024 at 12:08:24AM +0200, Ulf Hansson wrote: > > > > On Mon, 7 Oct 2024 at 20:49, Laurent Pinchart wrote: > > > > > On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > > > > > > On Fri, 4 Oct 2024 at 11:41, Sakari Ailus wrote: > > > > > > > > > > > > > > Hello everyone, > > > > > > > > > > > > > > This set will switch the users of pm_runtime_put_autosuspend() to > > > > > > > __pm_runtime_put_autosuspend() while the former will soon be re-purposed > > > > > > > to include a call to pm_runtime_mark_last_busy(). The two are almost > > > > > > > always used together, apart from bugs which are likely common. Going > > > > > > > forward, most new users should be using pm_runtime_put_autosuspend(). > > > > > > > > > > > > > > Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > > > > > > > I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > > > > > > > and pm_runtime_mark_last_busy(). > > > > > > > > > > > > That sounds like it could cause a lot of churns. > > > > > > > > > > > > Why not add a new helper function that does the > > > > > > pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > > > > > > things? Then we can start moving users over to this new interface, > > > > > > rather than having this intermediate step? > > > > > > > > > > I think the API would be nicer if we used the shortest and simplest > > > > > function names for the most common use cases. Following > > > > > pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that > > > > > most common use case. That's why I like Sakari's approach of repurposing > > > > > pm_runtime_put_autosuspend(), and introducing > > > > > __pm_runtime_put_autosuspend() for the odd cases where > > > > > pm_runtime_mark_last_busy() shouldn't be called. > > > > > > > > Okay, so the reason for this approach is because we couldn't find a > > > > short and descriptive name that could be used in favor of > > > > pm_runtime_put_autosuspend(). Let me throw some ideas at it and maybe > > > > you like it - or not. :-) > > > > > > I like the idea at least :-) > > > > > > > I don't know what options you guys discussed, but to me the entire > > > > "autosuspend"-suffix isn't really that necessary in my opinion. There > > > > are more ways than calling pm_runtime_put_autosuspend() that triggers > > > > us to use the RPM_AUTO flag for rpm_suspend(). For example, just > > > > calling pm_runtime_put() has the similar effect. > > > > > > To be honest, I'm lost there. pm_runtime_put() calls > > > __pm_runtime_idle(RPM_GET_PUT | RPM_ASYNC), while > > > pm_runtime_put_autosuspend() calls __pm_runtime_suspend(RPM_GET_PUT | > > > RPM_ASYNC | RPM_AUTO). > > > > __pm_runtime_idle() ends up calling rpm_idle(), which may call > > rpm_suspend() - if it succeeds to idle the device. In that case, it > > tags on the RPM_AUTO flag in the call to rpm_suspend(). Quite similar > > to what is happening when calling pm_runtime_put_autosuspend(). > > Right. > > For almost everybody, except for a small bunch of drivers that > actually have a .runtime_idle() callback, pm_runtime_put() is > literally equivalent to pm_runtime_put_autosuspend(). > > So really the question is why anyone who doesn't provide a > .runtime_idle() callback bothers with using this special > pm_runtime_put_autosuspend() thing, which really means "do a > runtime_put(), but skip my .runtime_idle() callback". My guess is that it's in most cases a legacy pattern that is being followed. Also note that rpm_idle() didn't "always" tag on the RPM_AUTO flag, even if it's quite a while ago (2013) since we added it. Unless there is some actual optimization involved, as it also allows us to skip calling rpm_idle() and go directly for rpm_suspend(). > > > > > > > > > > > > Moreover, it's similar for pm_runtime_mark_last_busy(), it's called > > > > during rpm_resume() too, for example. So why bother about having > > > > "mark_last_busy" in the new name too. > > > > > > > > That said, my suggestion is simply "pm_runtime_put_suspend". > > > > > > Can we do even better, and make pm_runtime_put() to handle autosuspend > > > automatically when autosuspend is enabled ? > > > > As stated above, this is already the case. > > What really is needed appears to be a combination of > pm_runtime_mark_last_busy() with pm_runtime_put(). This makes sense to me too, but I don't think we should limit it to this. Making pm_runtime_put_autosuspend (or if the name "pm_runtime_put_suspend" is better?) to do the similar thing, is probably a good idea too. At least in my opinion. > > Granted, pm_runtime_put() could do the pm_runtime_mark_last_busy() > thing automatically if autosuspend is enabled and the only consequence > of it might be delaying a suspend of the device until its autosuspend > timer expires, which should not be a problem in the vast majority of > cases. Right. I guess we should expect the *sync* variants to be used, if the timer really needs to be overridden. Kind regards Uffe
On 08/10/2024 7:24 pm, Rafael J. Wysocki wrote: > On Tue, Oct 8, 2024 at 12:35 AM Ulf Hansson <ulf.hansson@linaro.org> wrote: >> >> On Tue, 8 Oct 2024 at 00:25, Laurent Pinchart >> <laurent.pinchart@ideasonboard.com> wrote: >>> >>> Hi Ulf, >>> >>> On Tue, Oct 08, 2024 at 12:08:24AM +0200, Ulf Hansson wrote: >>>> On Mon, 7 Oct 2024 at 20:49, Laurent Pinchart wrote: >>>>> On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: >>>>>> On Fri, 4 Oct 2024 at 11:41, Sakari Ailus wrote: >>>>>>> >>>>>>> Hello everyone, >>>>>>> >>>>>>> This set will switch the users of pm_runtime_put_autosuspend() to >>>>>>> __pm_runtime_put_autosuspend() while the former will soon be re-purposed >>>>>>> to include a call to pm_runtime_mark_last_busy(). The two are almost >>>>>>> always used together, apart from bugs which are likely common. Going >>>>>>> forward, most new users should be using pm_runtime_put_autosuspend(). >>>>>>> >>>>>>> Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, >>>>>>> I'll post another set to merge the calls to __pm_runtime_put_autosuspend() >>>>>>> and pm_runtime_mark_last_busy(). >>>>>> >>>>>> That sounds like it could cause a lot of churns. >>>>>> >>>>>> Why not add a new helper function that does the >>>>>> pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() >>>>>> things? Then we can start moving users over to this new interface, >>>>>> rather than having this intermediate step? >>>>> >>>>> I think the API would be nicer if we used the shortest and simplest >>>>> function names for the most common use cases. Following >>>>> pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that >>>>> most common use case. That's why I like Sakari's approach of repurposing >>>>> pm_runtime_put_autosuspend(), and introducing >>>>> __pm_runtime_put_autosuspend() for the odd cases where >>>>> pm_runtime_mark_last_busy() shouldn't be called. >>>> >>>> Okay, so the reason for this approach is because we couldn't find a >>>> short and descriptive name that could be used in favor of >>>> pm_runtime_put_autosuspend(). Let me throw some ideas at it and maybe >>>> you like it - or not. :-) >>> >>> I like the idea at least :-) >>> >>>> I don't know what options you guys discussed, but to me the entire >>>> "autosuspend"-suffix isn't really that necessary in my opinion. There >>>> are more ways than calling pm_runtime_put_autosuspend() that triggers >>>> us to use the RPM_AUTO flag for rpm_suspend(). For example, just >>>> calling pm_runtime_put() has the similar effect. >>> >>> To be honest, I'm lost there. pm_runtime_put() calls >>> __pm_runtime_idle(RPM_GET_PUT | RPM_ASYNC), while >>> pm_runtime_put_autosuspend() calls __pm_runtime_suspend(RPM_GET_PUT | >>> RPM_ASYNC | RPM_AUTO). >> >> __pm_runtime_idle() ends up calling rpm_idle(), which may call >> rpm_suspend() - if it succeeds to idle the device. In that case, it >> tags on the RPM_AUTO flag in the call to rpm_suspend(). Quite similar >> to what is happening when calling pm_runtime_put_autosuspend(). > > Right. > > For almost everybody, except for a small bunch of drivers that > actually have a .runtime_idle() callback, pm_runtime_put() is > literally equivalent to pm_runtime_put_autosuspend(). > > So really the question is why anyone who doesn't provide a > .runtime_idle() callback bothers with using this special > pm_runtime_put_autosuspend() thing, Because they are following the documentation? It says: "Drivers should call pm_runtime_mark_last_busy() to update this field after carrying out I/O, typically just before calling pm_runtime_put_autosuspend()." and "In order to use autosuspend, subsystems or drivers must call pm_runtime_use_autosuspend() (...), and thereafter they should use the various `*_autosuspend()` helper functions instead of the non# autosuspend counterparts" So the documentation says I should be using pm_runtime_put_autosuspend() instead of pm_runtime_put(). Seems unfair to criticise people for following the documentation.
On Wed, Oct 9, 2024 at 2:48 PM Richard Fitzgerald <rf@opensource.cirrus.com> wrote: > > On 08/10/2024 7:24 pm, Rafael J. Wysocki wrote: > > On Tue, Oct 8, 2024 at 12:35 AM Ulf Hansson <ulf.hansson@linaro.org> wrote: > >> > >> On Tue, 8 Oct 2024 at 00:25, Laurent Pinchart > >> <laurent.pinchart@ideasonboard.com> wrote: > >>> > >>> Hi Ulf, > >>> > >>> On Tue, Oct 08, 2024 at 12:08:24AM +0200, Ulf Hansson wrote: > >>>> On Mon, 7 Oct 2024 at 20:49, Laurent Pinchart wrote: > >>>>> On Fri, Oct 04, 2024 at 04:38:36PM +0200, Ulf Hansson wrote: > >>>>>> On Fri, 4 Oct 2024 at 11:41, Sakari Ailus wrote: > >>>>>>> > >>>>>>> Hello everyone, > >>>>>>> > >>>>>>> This set will switch the users of pm_runtime_put_autosuspend() to > >>>>>>> __pm_runtime_put_autosuspend() while the former will soon be re-purposed > >>>>>>> to include a call to pm_runtime_mark_last_busy(). The two are almost > >>>>>>> always used together, apart from bugs which are likely common. Going > >>>>>>> forward, most new users should be using pm_runtime_put_autosuspend(). > >>>>>>> > >>>>>>> Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, > >>>>>>> I'll post another set to merge the calls to __pm_runtime_put_autosuspend() > >>>>>>> and pm_runtime_mark_last_busy(). > >>>>>> > >>>>>> That sounds like it could cause a lot of churns. > >>>>>> > >>>>>> Why not add a new helper function that does the > >>>>>> pm_runtime_put_autosuspend() and the pm_runtime_mark_last_busy() > >>>>>> things? Then we can start moving users over to this new interface, > >>>>>> rather than having this intermediate step? > >>>>> > >>>>> I think the API would be nicer if we used the shortest and simplest > >>>>> function names for the most common use cases. Following > >>>>> pm_runtime_put_autosuspend() with pm_runtime_mark_last_busy() is that > >>>>> most common use case. That's why I like Sakari's approach of repurposing > >>>>> pm_runtime_put_autosuspend(), and introducing > >>>>> __pm_runtime_put_autosuspend() for the odd cases where > >>>>> pm_runtime_mark_last_busy() shouldn't be called. > >>>> > >>>> Okay, so the reason for this approach is because we couldn't find a > >>>> short and descriptive name that could be used in favor of > >>>> pm_runtime_put_autosuspend(). Let me throw some ideas at it and maybe > >>>> you like it - or not. :-) > >>> > >>> I like the idea at least :-) > >>> > >>>> I don't know what options you guys discussed, but to me the entire > >>>> "autosuspend"-suffix isn't really that necessary in my opinion. There > >>>> are more ways than calling pm_runtime_put_autosuspend() that triggers > >>>> us to use the RPM_AUTO flag for rpm_suspend(). For example, just > >>>> calling pm_runtime_put() has the similar effect. > >>> > >>> To be honest, I'm lost there. pm_runtime_put() calls > >>> __pm_runtime_idle(RPM_GET_PUT | RPM_ASYNC), while > >>> pm_runtime_put_autosuspend() calls __pm_runtime_suspend(RPM_GET_PUT | > >>> RPM_ASYNC | RPM_AUTO). > >> > >> __pm_runtime_idle() ends up calling rpm_idle(), which may call > >> rpm_suspend() - if it succeeds to idle the device. In that case, it > >> tags on the RPM_AUTO flag in the call to rpm_suspend(). Quite similar > >> to what is happening when calling pm_runtime_put_autosuspend(). > > > > Right. > > > > For almost everybody, except for a small bunch of drivers that > > actually have a .runtime_idle() callback, pm_runtime_put() is > > literally equivalent to pm_runtime_put_autosuspend(). > > > > So really the question is why anyone who doesn't provide a > > .runtime_idle() callback bothers with using this special > > pm_runtime_put_autosuspend() thing, > > Because they are following the documentation? It says: > > "Drivers should call pm_runtime_mark_last_busy() to update this field > after carrying out I/O, typically just before calling > pm_runtime_put_autosuspend()." > > and > > "In order to use autosuspend, subsystems or drivers must call > pm_runtime_use_autosuspend() (...), and thereafter they should use the > various `*_autosuspend()` helper functions instead of the non# > autosuspend counterparts" > > So the documentation says I should be using pm_runtime_put_autosuspend() > instead of pm_runtime_put(). > > Seems unfair to criticise people for following the documentation. I'm not criticising anyone, just wondering why they do what they do. "Because it is documented this way" is a fair answer, but it doesn't invalidate the observation that the difference between pm_runtime_put_autosuspend() and pm_runtime_put() boils down to the cases when the .runtime_idle() callback is present (which are few and far between so to speak). Moreover, there are call sites using pm_runtime_*() functions even though they may not know whether or not autosuspend is enabled for the target devices, so the advice given in the documentation cannot be universally followed regardless. This thread is about the way to go, generally speaking, and what I'm saying is effectively that replacing pm_runtime_put_autosuspend() with pm_runtime_put() almost everywhere (if not just everywhere) would be fine with me. I also think that the current users of pm_runtime_put_autosuspend() that is not immediately preceded by pm_runtime_mark_last_busy() can be readily switched over to using pm_runtime_put() instead of it and then pm_runtime_put_autosuspend() can be made call pm_runtime_mark_last_busy(), so the latter can be removed from the code using the former. Note that this last step does not require tree-wide changes, because calling pm_runtime_mark_last_busy() twice in a row for the same device is not a problem. Of course, the documentation needs to be updated in accordance with the code changes, which didn't happen when previous changes were made to pm_runtime_put() and that likely is why it does not reflect the current code.
Hello everyone, This set will switch the users of pm_runtime_put_autosuspend() to __pm_runtime_put_autosuspend() while the former will soon be re-purposed to include a call to pm_runtime_mark_last_busy(). The two are almost always used together, apart from bugs which are likely common. Going forward, most new users should be using pm_runtime_put_autosuspend(). Once this conversion is done and pm_runtime_put_autosuspend() re-purposed, I'll post another set to merge the calls to __pm_runtime_put_autosuspend() and pm_runtime_mark_last_busy(). The diff in these patches have been generated using the following Coccinelle script (besides a manual change in drivers/iio/magnetometer/af8133j.c): ----------8<------------------- @@ expression E1; @@ - pm_runtime_put_autosuspend(E1) + __pm_runtime_put_autosuspend(E1) ----------8<------------------- These patches are on top of today's linux-next (i.e. next-20241004). Sakari Ailus (51): accel/ivpu: Switch to __pm_runtime_put_autosuspend() bluetooth: Switch to __pm_runtime_put_autosuspend() bus: sunxi-rsb: Switch to __pm_runtime_put_autosuspend() hwrng: Switch to __pm_runtime_put_autosuspend() clk: Switch to __pm_runtime_put_autosuspend() crypto: Switch to __pm_runtime_put_autosuspend() dmaengine: Switch to __pm_runtime_put_autosuspend() gpio: Switch to __pm_runtime_put_autosuspend() drm/amd: Switch to __pm_runtime_put_autosuspend() drm/nouveau: Switch to __pm_runtime_put_autosuspend() drm/radeon: Switch to __pm_runtime_put_autosuspend() drm/panfrost: Switch to __pm_runtime_put_autosuspend() drivers: drm: Switch to __pm_runtime_put_autosuspend() HSI: omap_ssi_port: Switch to __pm_runtime_put_autosuspend() stm class: Switch to __pm_runtime_put_autosuspend() i2c: Switch to __pm_runtime_put_autosuspend() i3c: master: svc: Switch to __pm_runtime_put_autosuspend() i3c: dw: Switch to __pm_runtime_put_autosuspend() iio: Switch to __pm_runtime_put_autosuspend() Input: omap4-keypad: Switch to __pm_runtime_put_autosuspend() Input: cs40l50: Switch to __pm_runtime_put_autosuspend() iommu/arm-smmu: Switch to __pm_runtime_put_autosuspend() irqchip/imx-irqsteer: Switch to __pm_runtime_put_autosuspend() mailbox: mtk-cmdq-mailbox: Switch to __pm_runtime_put_autosuspend() media: Switch to __pm_runtime_put_autosuspend() mfd: Switch to __pm_runtime_put_autosuspend() mei: Switch to __pm_runtime_put_autosuspend() mmc: Switch to __pm_runtime_put_autosuspend() mtd: rawnand: gpmi: Switch to __pm_runtime_put_autosuspend() net: Switch to __pm_runtime_put_autosuspend() nfc: trf7970a: Switch to __pm_runtime_put_autosuspend() PCI/portdrv: Switch to __pm_runtime_put_autosuspend() phy: motorola: phy-mapphone-mdm6600: Switch to __pm_runtime_put_autosuspend() phy: ti: phy-twl4030-usb: Switch to __pm_runtime_put_autosuspend() power: Switch to __pm_runtime_put_autosuspend() pwm: img: Switch to __pm_runtime_put_autosuspend() regulator: stm32-vrefbuf: Switch to __pm_runtime_put_autosuspend() remoteproc: omap: Switch to __pm_runtime_put_autosuspend() slimbus: Switch to __pm_runtime_put_autosuspend() soundwire: Switch to __pm_runtime_put_autosuspend() spi: Switch to __pm_runtime_put_autosuspend() staging: Switch to __pm_runtime_put_autosuspend() thunderbolt: Switch to __pm_runtime_put_autosuspend() serial: Switch to __pm_runtime_put_autosuspend() usb: Switch to __pm_runtime_put_autosuspend() w1: omap-hdq: Switch to __pm_runtime_put_autosuspend() staging: greybus: Switch to __pm_runtime_put_autosuspend() ALSA: hda: Switch to __pm_runtime_put_autosuspend() ASoC: Switch to __pm_runtime_put_autosuspend() ALSA: intel_hdmi: Switch to __pm_runtime_put_autosuspend() soc: apple: mailbox: Switch to __pm_runtime_put_autosuspend() drivers/accel/ivpu/ivpu_drv.c | 2 +- drivers/accel/ivpu/ivpu_pm.c | 8 +- drivers/bluetooth/btmtksdio.c | 2 +- drivers/bluetooth/hci_bcm.c | 6 +- drivers/bluetooth/hci_h5.c | 4 +- drivers/bluetooth/hci_intel.c | 6 +- drivers/bus/sunxi-rsb.c | 4 +- drivers/char/hw_random/cctrng.c | 2 +- drivers/char/hw_random/omap3-rom-rng.c | 2 +- drivers/clk/imx/clk-imx8qxp-lpcg.c | 2 +- drivers/clk/imx/clk-scu.c | 2 +- drivers/clk/qcom/lpassaudiocc-sc7280.c | 4 +- drivers/clk/qcom/lpasscorecc-sc7180.c | 4 +- drivers/crypto/ccree/cc_pm.c | 2 +- drivers/crypto/hisilicon/qm.c | 2 +- drivers/crypto/omap-aes-gcm.c | 2 +- drivers/crypto/omap-aes.c | 2 +- drivers/crypto/omap-des.c | 2 +- drivers/crypto/omap-sham.c | 2 +- drivers/crypto/rockchip/rk3288_crypto_ahash.c | 2 +- .../crypto/rockchip/rk3288_crypto_skcipher.c | 2 +- drivers/crypto/stm32/stm32-crc32.c | 4 +- drivers/crypto/stm32/stm32-cryp.c | 2 +- drivers/crypto/stm32/stm32-hash.c | 2 +- drivers/dma/at_xdmac.c | 24 +-- drivers/dma/pl330.c | 14 +- drivers/dma/qcom/bam_dma.c | 10 +- drivers/dma/qcom/hidma.c | 18 +- drivers/dma/qcom/hidma_dbg.c | 2 +- drivers/dma/qcom/hidma_mgmt.c | 4 +- drivers/dma/ste_dma40.c | 16 +- drivers/dma/ti/cppi41.c | 10 +- drivers/dma/xilinx/zynqmp_dma.c | 2 +- drivers/gpio/gpio-arizona.c | 10 +- drivers/gpio/gpio-mxc.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 2 +- .../gpu/drm/amd/amdgpu/amdgpu_connectors.c | 16 +- drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 120 ++++++------ drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 +- drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 6 +- drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 4 +- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 +- drivers/gpu/drm/amd/amdgpu/amdgpu_rap.c | 4 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +- .../gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 4 +- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 4 +- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 178 +++++++++--------- .../drm/bridge/analogix/analogix_dp_core.c | 2 +- drivers/gpu/drm/bridge/analogix/anx7625.c | 4 +- drivers/gpu/drm/bridge/parade-ps8640.c | 4 +- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 14 +- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 12 +- drivers/gpu/drm/exynos/exynos_drm_fimc.c | 4 +- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 4 +- drivers/gpu/drm/exynos/exynos_drm_gsc.c | 6 +- drivers/gpu/drm/exynos/exynos_drm_rotator.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_scaler.c | 2 +- drivers/gpu/drm/i915/intel_runtime_pm.c | 4 +- drivers/gpu/drm/imx/dcss/dcss-crtc.c | 2 +- drivers/gpu/drm/lima/lima_sched.c | 2 +- drivers/gpu/drm/msm/adreno/adreno_device.c | 2 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- drivers/gpu/drm/msm/msm_gpu.c | 2 +- drivers/gpu/drm/msm/msm_iommu.c | 4 +- drivers/gpu/drm/msm/msm_submitqueue.c | 2 +- drivers/gpu/drm/nouveau/dispnv50/disp.c | 10 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 4 +- drivers/gpu/drm/nouveau/nouveau_debugfs.c | 8 +- drivers/gpu/drm/nouveau/nouveau_display.c | 4 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 10 +- drivers/gpu/drm/nouveau/nouveau_gem.c | 10 +- drivers/gpu/drm/panel/panel-edp.c | 8 +- .../gpu/drm/panel/panel-samsung-atna33xc20.c | 6 +- drivers/gpu/drm/panel/panel-simple.c | 6 +- drivers/gpu/drm/panfrost/panfrost_job.c | 4 +- drivers/gpu/drm/panfrost/panfrost_mmu.c | 4 +- drivers/gpu/drm/panfrost/panfrost_perfcnt.c | 4 +- drivers/gpu/drm/panthor/panthor_device.c | 2 +- drivers/gpu/drm/panthor/panthor_sched.c | 6 +- drivers/gpu/drm/radeon/radeon_acpi.c | 2 +- drivers/gpu/drm/radeon/radeon_connectors.c | 20 +- drivers/gpu/drm/radeon/radeon_display.c | 6 +- drivers/gpu/drm/radeon/radeon_drv.c | 4 +- drivers/gpu/drm/radeon/radeon_fbdev.c | 4 +- drivers/gpu/drm/radeon/radeon_kms.c | 10 +- drivers/gpu/drm/tegra/submit.c | 2 +- drivers/gpu/drm/tidss/tidss_drv.c | 2 +- drivers/gpu/drm/vc4/vc4_v3d.c | 2 +- drivers/hsi/controllers/omap_ssi_port.c | 42 ++--- drivers/hwtracing/stm/core.c | 8 +- drivers/i2c/busses/i2c-amd-mp2-pci.c | 2 +- drivers/i2c/busses/i2c-amd-mp2.h | 2 +- drivers/i2c/busses/i2c-at91-master.c | 2 +- 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