iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/drivers/clk
History
Derek Basehore ede7785847 clk: Remove global clk traversal on fetch parent index 
It's not required to traverse the entire clk tree when the parents array
contains a NULL value. We already have the parent clk_core pointer, so
we can just compare the parent->name and parent_names[i] pointers.

This can be a substantial power improvement in cases where the parent
clk isn't known and that clk is never registered, because a mux having
an unregistered parent name may traverse the clk tree on every
clk_set_rate() call in clk_mux_determine_rate_flags(). This can happen
hundreds of times a second for CPU clks.

This patch is the combination of reverting commit 470b5e2f97cf ("clk:
simplify clk_fetch_parent_index() function") and optimizing the
resulting code to never call __clk_lookup() because we already have the
clk_core pointer we're looking for. That optimization went unnoticed
even after commit da0f0b2c3ad2 ("clk: Correct lookup logic in
clk_fetch_parent_index()") tried to optimize this path.

Signed-off-by: Derek Basehore <dbasehore@chromium.org>
[sboyd@kernel.org: More description in commit text]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-01-24 11:13:28 -08:00
..
actions
clk: actions: Add Actions Semi S900 SoC Reset Management Unit support
2018-10-16 14:41:53 -07:00
at91
Merge branches 'clk-actions-reset', 'clk-imx7-init-critical', 'clk-mmp2-ids' and 'clk-at91-pmc-rework' into clk-next
2018-10-18 15:43:48 -07:00
axis
…
axs10x
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
bcm
Merge branches 'clk-managed-registration', 'clk-spdx', 'clk-remove-basic' and 'clk-ops-const' into clk-next
2018-12-14 13:33:44 -08:00
berlin
This time we have a good set of changes to the core framework that do some
2018-06-09 12:06:24 -07:00
davinci
clk: davinci: kill davinci_clk_reset_assert/deassert()
2018-10-02 08:54:14 -07:00
h8300
clk: h8300: Remove usage of CLK_IS_BASIC
2018-12-10 14:43:21 -08:00
hisilicon
clk: hisilicon: Remove usage of CLK_IS_BASIC
2018-12-10 14:43:21 -08:00
imgtec
clk: boston: unregister clks on failure in clk_boston_setup()
2018-11-08 10:14:41 -08:00
imx
clk: imx: fix potential NULL dereference in imx8qxp_lpcg_clk_probe()
2019-01-09 10:34:54 -08:00
ingenic
clk: Add Ingenic jz4725b CGU driver
2018-10-16 15:19:48 -07:00
keystone
Merge branch 'clk-k3-tisci' into clk-next
2018-10-18 15:40:10 -07:00
loongson1
clk: Loongson1: Remove usage of CLK_IS_BASIC
2018-12-10 14:44:08 -08:00
mediatek
clk: mediatek: fix the PCIe MAC clock parent
2018-12-05 12:30:30 -08:00
meson
Merge branch 'clk-fixes' into clk-next
2018-12-14 13:42:08 -08:00
microchip
…
mmp
Revert "clk: mmp2: add SP clock"
2019-01-24 10:55:32 -08:00
mvebu
clk: mvebu: Off by one bugs in cp110_of_clk_get()
2018-12-03 09:54:48 -08:00
mxs
clk: mxs: make clk_ops const
2017-11-01 23:25:43 -07:00
nxp
clk: lpc32xx: Set name of regmap_config
2018-03-19 14:35:16 -07:00
pistachio
clk: pistachio: constify clk_ops structures
2018-11-06 09:41:49 -08:00
pxa
clk: pxa: constify clk_ops structures
2018-11-06 09:41:57 -08:00
qcom
clk: qcom: Select QCOM_GDSC with MSM_GCC_8998
2019-01-11 10:39:15 -08:00
renesas
Merge branch 'clk-of' into clk-next
2018-12-14 14:02:55 -08:00
rockchip
clk: rockchip: add clock-id to gate of ACODEC for rk3328
2018-11-26 14:22:12 +01:00
samsung
clk: samsung: s3c2410: Remove usage of CLK_IS_BASIC
2018-12-10 14:44:08 -08:00
sirf
We have two changes to the core framework this time around. The first being a
2017-11-17 20:04:24 -08:00
socfpga
clk: socfpga: stratix10: fix naming convention for the fixed-clocks
2019-01-15 12:58:38 -08:00
spear
clk: spear: fix WDT clock definition on SPEAr600
2018-04-06 13:45:34 -07:00
sprd
clk: sprd: add RTC gate for SC9860
2018-03-16 15:53:30 -07:00
st
clk: st: Remove usage of CLK_IS_BASIC
2018-12-10 14:43:20 -08:00
sunxi
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
sunxi-ng
clk: sunxi-ng: a64: Allow parent change for VE clock
2018-12-10 11:19:26 -08:00
tegra
clk: tegra: dfll: Fix a potential Oop in remove()
2019-01-09 10:35:37 -08:00
ti
clk: Use of_node_name_eq for node name comparisons
2018-12-14 13:52:41 -08:00
uniphier
clk: uniphier: add clock frequency support for SPI
2018-07-25 16:26:18 -07:00
ux500
clk: Use of_node_name_eq for node name comparisons
2018-12-14 13:52:41 -08:00
versatile
clk: versatile: sp810: Remove usage of CLK_IS_BASIC
2018-12-10 14:44:05 -08:00
x86
clk: x86: Stop marking clocks as CLK_IS_CRITICAL
2018-09-17 18:47:58 -07:00
zte
clk: move clock common macros out from vendor directories
2017-12-21 15:00:38 -08:00
zynq
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
zynqmp
clk: zynqmp: Fix memory allocation in zynqmp_clk_setup
2019-01-09 10:37:01 -08:00
clk-asm9260.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-aspeed.c
The new and exciting feature this time around is in the clk core.
2018-08-15 21:41:21 -07:00
clk-axi-clkgen.c
clk: axi-clkgen: Round closest in round_rate() and recalc_rate()
2017-12-21 18:07:53 -08:00
clk-axm5516.c
clk: axm5516: Remove usage of CLK_IS_BASIC
2018-12-10 14:43:21 -08:00
clk-bd718x7.c
clk: bd718x7: Initial support for ROHM bd71837/bd71847 PMIC clock
2018-12-10 12:44:03 -08:00
clk-bulk.c
clk: Tag clk core files with SPDX
2018-12-11 09:57:47 -08:00
clk-cdce706.c
…
clk-cdce925.c
Merge branches 'clk-dt-name', 'clk-ti-of-node' and 'clk-sa' into clk-next
2018-10-18 15:33:52 -07:00
clk-clps711x.c
treewide: Use struct_size() for kmalloc()-family
2018-06-06 11:15:43 -07:00
clk-composite.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-conf.c
clk: Tag clk core files with SPDX
2018-12-11 09:57:47 -08:00
clk-cs2000-cp.c
clk: cs2000-cp: convert to SPDX identifiers
2018-08-02 13:55:00 -07:00
clk-devres.c
clk: Tag clk core files with SPDX
2018-12-11 09:57:47 -08:00
clk-divider.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-efm32gg.c
treewide: Use struct_size() for kmalloc()-family
2018-06-06 11:15:43 -07:00
clk-fixed-factor.c
Merge branch 'clk-fixes' into clk-next
2018-12-14 13:42:08 -08:00
clk-fixed-rate.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-fractional-divider.c
Merge branches 'clk-imx7ulp', 'clk-imx6-fixes', 'clk-imx-fixes', 'clk-imx8qxp' and 'clk-imx8mq' into clk-next
2018-12-14 13:34:47 -08:00
clk-gate.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-gemini.c
treewide: Use struct_size() for kmalloc()-family
2018-06-06 11:15:43 -07:00
clk-gpio.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-hi655x.c
clk: clk-hi655x: Free of_provider at remove
2018-12-05 09:20:29 -08:00
clk-highbank.c
…
clk-hsdk-pll.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-max9485.c
clk: Add driver for MAX9485
2018-07-06 13:44:06 -07:00
clk-max77686.c
clk: max77686: constify clk_ops structure
2018-11-06 09:41:29 -08:00
clk-moxart.c
clk: Convert to using %pOF instead of full_name
2017-07-21 15:49:54 -07:00
clk-multiplier.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-mux.c
clk: Tag basic clk types with SPDX
2018-12-11 09:57:48 -08:00
clk-nomadik.c
clk: nomadik: Change to use DEFINE_SHOW_ATTRIBUTE macro
2018-11-28 14:13:18 -08:00
clk-npcm7xx.c
This time it looks like a quieter release cycle in the clk tree. I guess that's
2018-10-31 11:08:30 -07:00
clk-nspire.c
…
clk-oxnas.c
clk: oxnas: Add OX820 Gate clocks
2016-10-23 10:18:45 -07:00
clk-palmas.c
clk: palmas: constify clk_ops structure
2018-11-06 09:41:44 -08:00
clk-pwm.c
…
clk-qoriq.c
clk: qoriq: add more chips support
2018-11-08 10:29:44 -08:00
clk-rk808.c
clk: rk808: use managed version of of_provider registration
2018-12-05 09:20:35 -08:00
clk-s2mps11.c
clk: s2mps11: constify clk_ops structure
2018-11-06 09:42:12 -08:00
clk-scmi.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-scpi.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-si514.c
clk-si514, clk-si544: Implement prepare/unprepare/is_prepared operations
2018-06-29 10:59:40 -07:00
clk-si544.c
clk-si514, clk-si544: Implement prepare/unprepare/is_prepared operations
2018-06-29 10:59:40 -07:00
clk-si570.c
…
clk-si5351.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-si5351.h
…
clk-stm32f4.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-stm32h7.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-stm32mp1.c
clk: stm32mp1: drop pointless static qualifier in stm32_register_hw_clk()
2018-11-29 23:12:35 -08:00
clk-tango4.c
clk: Convert to using %pOFn instead of device_node.name
2018-08-30 09:50:20 -07:00
clk-twl6040.c
clk: clk-twl6040: Free of_provider at remove
2018-12-05 09:20:43 -08:00
clk-u300.c
clk: clk-u300: Fix a typo in two comment lines
2017-11-13 17:39:43 -08:00
clk-versaclock5.c
clk: vc5: Abort clock configuration without upstream clock
2019-01-09 10:53:58 -08:00
clk-vt8500.c
…
clk-wm831x.c
clk: make clk_init_data const
2017-11-01 23:25:51 -07:00
clk-xgene.c
clk: clk-xgene: Adjust six checks for null pointers
2017-11-13 17:40:03 -08:00
clk.c
clk: Remove global clk traversal on fetch parent index
2019-01-24 11:13:28 -08:00
clk.h
clk: Tag clk core files with SPDX
2018-12-11 09:57:47 -08:00
clkdev.c
ARM: 8778/1: clkdev: don't call __of_clk_get_by_name() unnecessarily from clk_get()
2018-08-13 16:27:52 +01:00
Kconfig
clk: imx: Remove Kconfig duplicate include
2019-01-09 10:43:41 -08:00
Makefile
Merge branches 'clk-imx7ulp', 'clk-imx6-fixes', 'clk-imx-fixes', 'clk-imx8qxp' and 'clk-imx8mq' into clk-next
2018-12-14 13:34:47 -08:00