kernel/lib/bitmap.c, branch linux-5.14.y

Merge tag 'gpio-updates-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

2021-07-05T18:48:14Z

Pull gpio updates from Bartosz Golaszewski: "One new driver, support for new models in existing ones, dt-bindings conversions for several modules and improvements all over the place. Summary: - new driver for the IDT 79RC3243x GPIO controller - device tree bindings coversion to YAML for the following drivers: gpio-rk3328-grf, gpio-omap, gpio-davinci, gpio-zynq, gpio-stp, gpio-pcf857x - cleanup of probe functions in many drivers from Alexandru Ardelean, mostly dropping unnecessary calls to platform_set_drvdata() and removing error messages where none are needed (handled by the subsystem already) - several improvements to the core gpiolib and the sysfs interface code from Andy Shevchenko - conversion of the gpio-xilinx driver to using the bitmap API + improvements of suspend/resume handling + minor tweaks - convert the gpio-stmpe to using devres helpers exclusively in probe for improved robustness - updates for the generic gpio-regmap driver - updates for the gpio-dwapb driver - support for a new model in gpio-pca953x - cleanups in gpio-tegra186, gpio-104-idio-16, gpio-mxs & gpio-xgene - slight code refactoring of the gpio-zynq driver - documentation fixes from Mauro Carvalho Chehab - a bunch of minor tweaks and improvements all over the place" * tag 'gpio-updates-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (57 commits) docs: driver-api: gpio: using-gpio.rst: avoid using ReST :doc:`foo` markup dt-bindings: gpio: pcf857x: Convert to json-schema gpio: mxs: Prefer unsigned int to bare use of unsigned dt-bindings: gpio: stp: convert to json-schema dt-bindings: gpio: zynq: convert bindings to YAML dt-bindings: gpio: gpio-davinci: Convert to json-schema gpio: pca953x: Add support for the On Semi pca9655 gpio: gpio-xilinx: update on suspend and resume calls gpio: zynq: Check return value of irq_get_irq_data gpio: zynq: Check return value of pm_runtime_get_sync gpio: zynq: use module_platform_driver to simplify the code gpio: idt3243x: Fix return value check in idt_gpio_probe() MAINTAINERS: update ti,omap-gpio.yaml reference dt-bindings: gpio: Add devicetree binding for IDT 79RC32434 GPIO controller gpio: Add support for IDT 79RC3243x GPIO controller gpio: regmap: move drvdata to config data gpio-dwapb: Drop unused headers and sort the rest gpio: gpio-regmap: Use devm_add_action_or_reset() gpio: dwapb: Switch to use fwnode_irq_get() gpio: dwapb: Drop redundant check in dwapb_irq_set_type() ...

bitmap: Make bitmap_remap() and bitmap_bitremap() available to users

2021-05-12T11:52:21Z

Currently the bitmap_remap() and bitmap_bitremap() are available only for CONFIG_NUMA=y case, while some users may benefit out of it and being independent to NUMA code. Make them available to users by moving out of ifdeffery and exporting for modules. Signed-off-by: Andy Shevchenko Tested-by: Neeli Srinivas Acked-by: Yury Norov Signed-off-by: Bartosz Golaszewski

bitmap_parse: Support 'all' semantics

2021-05-10T22:38:20Z

RCU code supports an 'all' group as a special case when parsing rcu_nocbs parameter. This patch moves the 'all' support to the core bitmap_parse code, so that all bitmap users can enjoy this extension. Moving 'all' parsing to a bitmap_parse level also allows users to pass patterns together with 'all' in regular group:pattern format, for example, "rcu_nocbs=all:1/2" would offload all the even-numbered CPUs regardless of the number of CPUs on the system. Reviewed-by: Andy Shevchenko Signed-off-by: Yury Norov Signed-off-by: Paul E. McKenney

Merge tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

2021-05-05T19:39:29Z

Pull gpio updates from Bartosz Golaszewski: - new driver for the Realtek Otto GPIO controller - ACPI support for gpio-mpc8xxx - edge event support for gpio-sch (+ Kconfig fixes) - Kconfig improvements in gpio-ich - fixes to older issues in gpio-mockup - ACPI quirk for ignoring EC wakeups on Dell Venue 10 Pro 5055 - improve the GPIO aggregator code by using more generic interfaces instead of reimplementing them in the driver - convert the DT bindings for gpio-74x164 to yaml - documentation improvements - a slew of other minor fixes and improvements to GPIO drivers * tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (34 commits) dt-bindings: gpio: add YAML description for rockchip,gpio-bank gpio: mxs: remove useless function dt-bindings: gpio: fairchild,74hc595: Convert to json-schema gpio: it87: remove unused code gpio: 104-dio-48e: Fix coding style issues gpio: mpc8xxx: Add ACPI support gpio: ich: Switch to be dependent on LPC_ICH gpio: sch: Drop MFD_CORE selection gpio: sch: depends on LPC_SCH gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055 gpio: sch: Hook into ACPI GPE handler to catch GPIO edge events gpio: sch: Add edge event support gpio: aggregator: Replace custom get_arg() with a generic next_arg() lib/cmdline: Export next_arg() for being used in modules gpio: omap: Use device_get_match_data() helper gpio: Add Realtek Otto GPIO support dt-bindings: gpio: Binding for Realtek Otto GPIO docs: kernel-parameters: Add gpio_mockup_named_lines docs: kernel-parameters: Move gpio-mockup for alphabetic order lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc() ...

lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc()

2021-05-05T14:07:39Z

Provide managed variants of bitmap_alloc() and bitmap_zalloc(). Signed-off-by: Bartosz Golaszewski Reviewed-by: Andy Shevchenko

lib: bitmap: order includes alphabetically

2021-05-05T14:07:39Z

For better readability and maintenance: order the includes in bitmap source files alphabetically. Signed-off-by: Bartosz Golaszewski Reviewed-by: Andy Shevchenko

lib: bitmap: support "N" as an alias for size of bitmap

2021-03-08T22:16:58Z

While this is done for all bitmaps, the original use case in mind was for CPU masks and cpulist_parse() as described below. It seems that a common configuration is to use the 1st couple cores for housekeeping tasks. This tends to leave the remaining ones to form a pool of similarly configured cores to take on the real workload of interest to the user. So on machine A - with 32 cores, it could be 0-3 for "system" and then 4-31 being used in boot args like nohz_full=, or rcu_nocbs= as part of setting up the worker pool of CPUs. But then newer machine B is added, and it has 48 cores, and so while the 0-3 part remains unchanged, the pool setup cpu list becomes 4-47. Multiple deployment becomes easier when we can just simply replace 31 and 47 with "N" and let the system substitute in the actual number at boot; a number that it knows better than we do. Cc: Yury Norov Cc: Peter Zijlstra Cc: "Paul E. McKenney" Cc: Rasmus Villemoes Cc: Andy Shevchenko Suggested-by: Yury Norov # move it from CPU code Acked-by: Yury Norov Signed-off-by: Paul Gortmaker Signed-off-by: Paul E. McKenney

lib: bitmap: move ERANGE check from set_region to check_region

2021-03-08T22:16:58Z

It makes sense to do all the checks in check_region() and not 1/2 in check_region and 1/2 in set_region. Since set_region is called immediately after check_region, the net effect on runtime is zero, but it gets rid of an if (...) return... Cc: Yury Norov Cc: Rasmus Villemoes Cc: Andy Shevchenko Acked-by: Yury Norov Reviewed-by: Andy Shevchenko Signed-off-by: Paul Gortmaker Signed-off-by: Paul E. McKenney

lib: bitmap: fold nbits into region struct

2021-03-08T22:16:58Z

This will reduce parameter passing and enable using nbits as part of future dynamic region parameter parsing. Cc: Yury Norov Cc: Rasmus Villemoes Cc: Andy Shevchenko Suggested-by: Yury Norov Acked-by: Yury Norov Reviewed-by: Andy Shevchenko Signed-off-by: Paul Gortmaker Signed-off-by: Paul E. McKenney

lib: bitmap: delete duplicated words

2020-10-16T18:11:19Z

Drop the repeated word "an". Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Link: https://lkml.kernel.org/r/20200823040424.25760-1-rdunlap@infradead.org Signed-off-by: Linus Torvalds