kernel/linux.git/drivers/clocksource/arm_arch_timer.c, branch v6.18.21

clocksource/drivers/arm_arch_timer_mmio: Switch over to standalone driver

2025-09-23T10:31:50+00:00

Remove all the MMIO support from the per-CPU timer driver, and switch over to the standalove driver. Signed-off-by: Marc Zyngier Signed-off-by: Daniel Lezcano Tested-by: Sudeep Holla Reviewed-by: Sudeep Holla Link: https://lore.kernel.org/r/20250814154622.10193-4-maz@kernel.org

time/timecounter: Fix the lie that struct cyclecounter is const

2025-07-01T13:38:25+00:00

In both the read callback for struct cyclecounter, and in struct timecounter, struct cyclecounter is declared as a const pointer. Unfortunatly, a number of users of this pointer treat it as a non-const pointer as it is burried in a larger structure that is heavily modified by the callback function when accessed. This lie had been hidden by the fact that container_of() "casts away" a const attribute of a pointer without any compiler warning happening at all. Fix this all up by removing the const attribute in the needed places so that everyone can see that the structure really isn't const, but can, and is, modified by the users of it. Signed-off-by: Greg Kroah-Hartman Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/2025070124-backyard-hurt-783a@gregkh

arm64: Modify _midr_range() functions to read MIDR/REVIDR internally

2025-02-26T21:29:44+00:00

These changes lay the groundwork for adding support for guest kernels, allowing them to leverage target CPU implementations provided by the VMM. No functional changes intended. Suggested-by: Oliver Upton Reviewed-by: Sebastian Ott Reviewed-by: Cornelia Huck Signed-off-by: Shameer Kolothum Acked-by: Catalin Marinas Link: https://lore.kernel.org/r/20250221140229.12588-2-shameerali.kolothum.thodi@huawei.com Signed-off-by: Oliver Upton

clocksource/drivers/arm_arch_timer: Use of_property_present() for non-boolean properties

2024-11-13T12:49:33+00:00

The use of of_property_read_bool() for non-boolean properties is deprecated in favor of of_property_present() when testing for property presence. Signed-off-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20241104190505.272805-2-robh@kernel.org Signed-off-by: Daniel Lezcano

clocksource/drivers/arm_arch_timer: Remove clockevents shutdown call on offlining

2024-10-31T09:41:42+00:00

The clockevents core already detached and unregistered it at this stage. Signed-off-by: Frederic Weisbecker Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20241029125451.54574-6-frederic@kernel.org

clocksource/drivers/arm_arch_timer: Using for_each_available_child_of_node_scoped()

2024-09-06T12:49:20+00:00

for_each_available_child_of_node_scoped() can put the device_node automatically. So, using it to make the code logic more simple and remove the device_node clean up code. Signed-off-by: Zhang Zekun Link: https://lore.kernel.org/r/20240807074655.52157-1-zhangzekun11@huawei.com Signed-off-by: Daniel Lezcano

clocksource/drivers/arm_arch_timer: Remove unnecessary ‘0’ values from irq

2024-07-12T14:07:05+00:00

The irq variable is initialized whatever the code path, it is poinless to initialize when declaring it. Signed-off-by: Li kunyu Link: https://lore.kernel.org/r/20240705040729.21961-1-kunyu@nfschina.com Signed-off-by: Daniel Lezcano

clocksource/drivers/arm_arch_timer: Mark hisi_161010101_oem_info const

2024-05-10T08:43:21+00:00

This isn't modified at runtime. Mark it const so it can move to read-only data. Cc: dann frazier Cc: Hanjun Guo Cc: Marc Zyngier Cc: Mark Rutland Signed-off-by: Stephen Boyd Reviewed-by: Hanjun Guo Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20240502233447.420888-1-swboyd@chromium.org

treewide: Remove system_counterval_t.cs, which is never read

2024-02-07T16:05:21+00:00

The clocksource pointer in struct system_counterval_t is not evaluated any more. Remove the code setting the member, and the member itself. Signed-off-by: Peter Hilber Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20240201010453.2212371-8-peter.hilber@opensynergy.com

ptp/kvm, arm_arch_timer: Set system_counterval_t.cs_id to constant

2024-02-07T16:05:21+00:00

Identify the clocksources used by ptp_kvm by setting the clocksource ID enum constants. This avoids dereferencing struct clocksource. Once the system_counterval_t.cs member will be removed, this will also avoid the need to obtain clocksource pointers from kvm_arch_ptp_get_crosststamp(). The clocksource IDs are associated to timestamps requested from the KVM hypervisor, so the proper clocksource ID is known at the ptp_kvm request site. While at it, also make the ptp_kvm_get_time_fn() 'ret' variable type int as that's what the function return value is. Signed-off-by: Peter Hilber Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20240201010453.2212371-6-peter.hilber@opensynergy.com