ARM: rpc: use legacy_timer_tick

rpc is the only user of the timer_tick() function now, and can
just call the newly added generic version instead.

Reviewed-by: Linus Walleij <[email protected]

ARM: rpc: use legacy_timer_tick

rpc is the only user of the timer_tick() function now, and can
just call the newly added generic version instead.

Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

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ARM/time: Replace <linux/clk-provider.h> by <linux/of_clk.h>

The ARM time code is not a clock provider, and just needs to call
of_clk_init().

Hence it can include <linux/of_clk.h> instead of <linux

ARM/time: Replace <linux/clk-provider.h> by <linux/of_clk.h>

The ARM time code is not a clock provider, and just needs to call
of_clk_init().

Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Stephen Boyd <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

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ARM: 8938/1: kernel: initialize broadcast hrtimer based clock event device

On platforms implementing CPU power management, the CPUidle subsystem
can allow CPUs to enter idle states where local timer

ARM: 8938/1: kernel: initialize broadcast hrtimer based clock event device

On platforms implementing CPU power management, the CPUidle subsystem
can allow CPUs to enter idle states where local timers logic is lost on power
down. To keep the software timers functional the kernel relies on an
always-on broadcast timer to be present in the platform to relay the
interrupt signalling the timer expiries.

For platforms implementing CPU core gating that do not implement an always-on
HW timer or implement it in a broken way, this patch adds code to initialize
the kernel hrtimer based clock event device upon boot (which can be chosen as
tick broadcast device by the kernel).
It relies on a dynamically chosen CPU to be always powered-up. This CPU then
relays the timer interrupt to CPUs in deep-idle states through its HW local
timer device.

Having a CPU always-on has implications on power management platform
capabilities and makes CPUidle suboptimal, since at least a CPU is kept
always in a shallow idle state by the kernel to relay timer interrupts,
but at least leaves the kernel with a functional system with some working
power management capabilities.

The hrtimer based clock event device is unconditionally registered, but
has the lowest possible rating such that any broadcast-capable HW clock
event device present will be chosen in preference as the tick broadcast
device.

Signed-off-by: Benjamin Gaignard <[email protected]>
Signed-off-by: Russell King <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Enrico Weigelt <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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ARM/time: Remove read_boot_clock64()

read_boot_clock64() is deleted, and replaced with
read_persistent_wall_and_boot_offset().

The default implementation of read_persistent_wall_and_boot_offset()
p

ARM/time: Remove read_boot_clock64()

read_boot_clock64() is deleted, and replaced with
read_persistent_wall_and_boot_offset().

The default implementation of read_persistent_wall_and_boot_offset()
provides a better fallback than the current stubs for read_boot_clock64()
that arm has with no users, so remove the old code.

Signed-off-by: Pavel Tatashin <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]

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treewide/trivial: Remove ';;$' typo noise

On lkml suggestions were made to split up such trivial typo fixes into per subsystem
patches:

--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boo

treewide/trivial: Remove ';;$' typo noise

On lkml suggestions were made to split up such trivial typo fixes into per subsystem
patches:

--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -439,7 +439,7 @@ setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height)
struct efi_uga_draw_protocol *uga = NULL, *first_uga;
efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID;
unsigned long nr_ugas;
- u32 *handles = (u32 *)uga_handle;;
+ u32 *handles = (u32 *)uga_handle;
efi_status_t status = EFI_INVALID_PARAMETER;
int i;

This patch is the result of the following script:

$ sed -i 's/;;$/;/g' $(git grep -E ';;$' | grep "\.[ch]:" | grep -vwE 'for|ia64' | cut -d: -f1 | sort | uniq)

... followed by manual review to make sure it's all good.

Splitting this up is just crazy talk, let's get over with this and just do it.

Reported-by: Pavel Machek <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>

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clocksource/drivers: Rename clocksource_probe to timer_probe

The function name is now renamed to 'timer_probe' for consistency with
the CLOCKSOURCE_OF_DECLARE => TIMER_OF_DECLARE change.

Signed-off

clocksource/drivers: Rename clocksource_probe to timer_probe

The function name is now renamed to 'timer_probe' for consistency with
the CLOCKSOURCE_OF_DECLARE => TIMER_OF_DECLARE change.

Signed-off-by: Daniel Lezcano <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>

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clocksource: cosmetic: Drop OF 'dependency' from symbols

Seeing the 'of' characters in a symbol that is being called from
ACPI seems to freak out people. So let's do a bit of pointless
renaming so t

clocksource: cosmetic: Drop OF 'dependency' from symbols

Seeing the 'of' characters in a symbol that is being called from
ACPI seems to freak out people. So let's do a bit of pointless
renaming so that these folks do feel at home.

Signed-off-by: Marc Zyngier <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Reviewed-by: Hanjun Guo <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Tested-by: Hanjun Guo <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

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ARM, clocksource/drivers: Provide read_boot_clock64() and read_persistent_clock64() and use them

As part of addressing "y2038 problem" for in-kernel uses, this
patch converts read_boot_clock() to re

ARM, clocksource/drivers: Provide read_boot_clock64() and read_persistent_clock64() and use them

As part of addressing "y2038 problem" for in-kernel uses, this
patch converts read_boot_clock() to read_boot_clock64() and
read_persistent_clock() to read_persistent_clock64() using
timespec64 by converting clock_access_fn to use timespec64.

Signed-off-by: Xunlei Pang <[email protected]>
Signed-off-by: John Stultz <[email protected]>
Acked-by: Thierry Reding <[email protected]> (for tegra part)
Cc: Russell King <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

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ARM: 8072/1: time: Make use of arm_get_current_stackframe

Make use of the arm_get_current_stackframe api so that
the frame pointer is correctly referenced in THUMB2 mode

Signed-off-by: Nikolay Bori

ARM: 8072/1: time: Make use of arm_get_current_stackframe

Make use of the arm_get_current_stackframe api so that
the frame pointer is correctly referenced in THUMB2 mode

Signed-off-by: Nikolay Borisov <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Russell King <[email protected]>

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ARM: call of_clk_init from default time_init handler

Most DT ARM machs require common clock providers initialized before timers.
Currently, arch/arm machs use .init_time to call of_clk_init right be

ARM: call of_clk_init from default time_init handler

Most DT ARM machs require common clock providers initialized before timers.
Currently, arch/arm machs use .init_time to call of_clk_init right before
clocksource_of_init. This prevents to remove that callback and use the default
one instead.

This patch adds a call to of_clk_init() to the default .init_time callback
for COMMON_CLK enabled machs to allow to remove custom callbacks where applicable.
While at it, also reorder includes alphabetically.

Signed-off-by: Sebastian Hesselbarth <[email protected]>

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sched_clock: Make ARM's sched_clock generic for all architectures

Nothing about the sched_clock implementation in the ARM port is
specific to the architecture. Generalize the code so that other
arch

sched_clock: Make ARM's sched_clock generic for all architectures

Nothing about the sched_clock implementation in the ARM port is
specific to the architecture. Generalize the code so that other
architectures can use it by selecting GENERIC_SCHED_CLOCK.

Signed-off-by: Stephen Boyd <[email protected]>
[jstultz: Merge minor collisions with other patches in my tree]
Signed-off-by: John Stultz <[email protected]>

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ARM: make machine_desc->init_time default to clocksource_of_init

Originally from a default machine descriptor patch from Arnd, pull out
just the default call to clocksource_of_init part. This is nee

ARM: make machine_desc->init_time default to clocksource_of_init

Originally from a default machine descriptor patch from Arnd, pull out
just the default call to clocksource_of_init part. This is needed so that
platforms can simply remove .init_time calls as they are converted to use
clocksource_of_init.

Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Nicolas Pitre <[email protected]>
Acked-by: Olof Johansson <[email protected]>
Signed-off-by: Rob Herring <[email protected]>

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ARM: delete struct sys_timer

Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.

This w

ARM: delete struct sys_timer

Now that the only field in struct sys_timer is .init, delete the struct,
and replace the machine descriptor .timer field with the initialization
function itself.

This will enable moving timer drivers into drivers/clocksource without
having to place a public prototype of each struct sys_timer object into
include/linux; the intent is to create a single of_clocksource_init()
function that determines which timer driver to initialize by scanning
the device dtree, much like the proposed irqchip_init() at:
http://www.spinics.net/lists/arm-kernel/msg203686.html

Includes mach-omap2 fixes from Igor Grinberg.

Tested-by: Robert Jarzmik <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>

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ARM: remove struct sys_timer suspend and resume fields

These fields duplicate e.g. struct clock_event_device's suspend and
resume fields, so remove them now that nothing is using them. The aim
is to

ARM: remove struct sys_timer suspend and resume fields

These fields duplicate e.g. struct clock_event_device's suspend and
resume fields, so remove them now that nothing is using them. The aim
is to remove all fields from struct sys_timer except .init, then replace
the ARM machine descriptor's .timer field with a .init_time function
instead, and delete struct sys_timer.

Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>

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ARM: set arch_gettimeoffset directly

remove ARM's struct sys_timer .offset function pointer, and instead
directly set the arch_gettimeoffset function pointer when the timer
driver is initialized. Th

ARM: set arch_gettimeoffset directly

remove ARM's struct sys_timer .offset function pointer, and instead
directly set the arch_gettimeoffset function pointer when the timer
driver is initialized. This requires multiplying all function results
by 1000, since the removed arm_gettimeoffset() did this. Also,
s/unsigned long/u32/ just to make the function prototypes exactly
match that of arch_gettimeoffset.

Cc: Russell King <[email protected]>
Cc: Andrew Victor <[email protected]>
Cc: Nicolas Ferre <[email protected]>
Cc: Jean-Christophe Plagniol-Villard <[email protected]>
Cc: Hartley Sweeten <[email protected]>
Cc: Ryan Mallon <[email protected]>
Cc: Ben Dooks <[email protected]>
Cc: Kukjin Kim <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>

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time: convert arch_gettimeoffset to a pointer

Currently, whenever CONFIG_ARCH_USES_GETTIMEOFFSET is enabled, each
arch core provides a single implementation of arch_gettimeoffset(). In
many cases, d

time: convert arch_gettimeoffset to a pointer

Currently, whenever CONFIG_ARCH_USES_GETTIMEOFFSET is enabled, each
arch core provides a single implementation of arch_gettimeoffset(). In
many cases, different sub-architectures, different machines, or
different timer providers exist, and so the arch ends up implementing
arch_gettimeoffset() as a call-through-pointer anyway. Examples are
ARM, Cris, M68K, and it's arguable that the remaining architectures,
M32R and Blackfin, should be doing this anyway.

Modify arch_gettimeoffset so that it itself is a function pointer, which
the arch initializes. This will allow later changes to move the
initialization of this function into individual machine support or timer
drivers. This is particularly useful for code in drivers/clocksource
which should rely on an arch-independant mechanism to register their
implementation of arch_gettimeoffset().

This patch also converts the Cris architecture to set arch_gettimeoffset
directly to the final implementation in time_init(), because Cris already
had separate time_init() functions per sub-architecture. M68K and ARM
are converted to set arch_gettimeoffset to the final implementation in
later patches, because they already have function pointers in place for
this purpose.

Cc: Russell King <[email protected]>
Cc: Mike Frysinger <[email protected]>
Cc: Mikael Starvik <[email protected]>
Cc: Hirokazu Takata <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Acked-by: Jesper Nilsson <[email protected]>
Acked-by: John Stultz <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>

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ARM: use new LEDS CPU trigger stub to replace old one

Cc: Linus Walleij <[email protected]>
Signed-off-by: Bryan Wu <[email protected]>

ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level

At the moment, read_persistent_clock is implemented at the
platform level, which makes it impossible to compile these
platfor

ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level

At the moment, read_persistent_clock is implemented at the
platform level, which makes it impossible to compile these
platforms in a single kernel.

Implement these two functions at the architecture level, and
provide a thin registration interface for both read_boot_clock
and read_persistent_clock. The two affected platforms (OMAP and
Tegra) are converted at the same time.

Reported-by: Jeff Ohlstein <[email protected]>
Tested-by: Stephen Warren <[email protected]>
Tested-by: Tony Lindgren <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Signed-off-by: Russell King <[email protected]>

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ARM: Make the sched_clock framework mandatory

All sched_clock() providers have been converted to the sched_clock
framework, which also provides a jiffy based implementation for
the platforms that do

ARM: Make the sched_clock framework mandatory

All sched_clock() providers have been converted to the sched_clock
framework, which also provides a jiffy based implementation for
the platforms that do not provide a counter.

It is now possible to make the sched_clock framework mandatory,
effectively preventing new platforms to add new sched_clock()
functions, which would be detrimental to the single zImage work.

Acked-by: Nicolas Pitre <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>

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ARM: remove mc146818rtc.h from time.c

mc146818rtc.h is not needed in time.c, so remove it.

Signed-off-by: Rob Herring <[email protected]>

arm: convert core files from module.h to export.h

Many of the core ARM kernel files are not modules, but just
including module.h for exporting symbols. Now these files can
use the lighter footprint

arm: convert core files from module.h to export.h

Many of the core ARM kernel files are not modules, but just
including module.h for exporting symbols. Now these files can
use the lighter footprint export.h for this role.

There are probably lots more, but ARM files of mach-* and plat-*
don't get coverage via a simple yesconfig build. They will have
to be cleaned up and tested via using their respective configs.

Signed-off-by: Paul Gortmaker <[email protected]>

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ARM: export rtc_lock for nvram driver

The rtc_lock is used by both the nvram and rtc drivers, so
we need to export it if at least one of the two is built,
not just for the rtc driver.

Signed-off-by

ARM: export rtc_lock for nvram driver

The rtc_lock is used by both the nvram and rtc drivers, so
we need to export it if at least one of the two is built,
not just for the rtc driver.

Signed-off-by: Arnd Bergmann <[email protected]>

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ARM: Use struct syscore_ops instead of sysdevs for PM in common code

Convert some ARM architecture's common code to using
struct syscore_ops objects for power management instead of sysdev
classes an

ARM: Use struct syscore_ops instead of sysdevs for PM in common code

Convert some ARM architecture's common code to using
struct syscore_ops objects for power management instead of sysdev
classes and sysdevs.

This simplifies the code and reduces the kernel's memory footprint.
It also is necessary for removing sysdevs from the kernel entirely in
the future.

Signed-off-by: Rafael J. Wysocki <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>

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arm: Switch from do_timer() to xtime_update()

xtime_update takes the xtime_lock itself.

Signed-off-by: Torben Hohn <[email protected]>
Cc: Russell King <[email protected]>
Cc: Peter Zijlstra <pet

arm: Switch from do_timer() to xtime_update()

xtime_update takes the xtime_lock itself.

Signed-off-by: Torben Hohn <[email protected]>
Cc: Russell King <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
LKML-Reference: <20110127145920.23248.75541.stgit@localhost>
Signed-off-by: Thomas Gleixner <[email protected]>

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