3cd86a58f7
Pull arm64 updates from Catalin Marinas:
"The bulk is in-kernel pointer authentication, activity monitors and
lots of asm symbol annotations. I also queued the sys_mremap() patch
commenting the asymmetry in the address untagging.
Summary:
- In-kernel Pointer Authentication support (previously only offered
to user space).
- ARM Activity Monitors (AMU) extension support allowing better CPU
utilisation numbers for the scheduler (frequency invariance).
- Memory hot-remove support for arm64.
- Lots of asm annotations (SYM_*) in preparation for the in-kernel
Branch Target Identification (BTI) support.
- arm64 perf updates: ARMv8.5-PMU 64-bit counters, refactoring the
PMU init callbacks, support for new DT compatibles.
- IPv6 header checksum optimisation.
- Fixes: SDEI (software delegated exception interface) double-lock on
hibernate with shared events.
- Minor clean-ups and refactoring: cpu_ops accessor,
cpu_do_switch_mm() converted to C, cpufeature finalisation helper.
- sys_mremap() comment explaining the asymmetric address untagging
behaviour"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (81 commits)
mm/mremap: Add comment explaining the untagging behaviour of mremap()
arm64: head: Convert install_el2_stub to SYM_INNER_LABEL
arm64: Introduce get_cpu_ops() helper function
arm64: Rename cpu_read_ops() to init_cpu_ops()
arm64: Declare ACPI parking protocol CPU operation if needed
arm64: move kimage_vaddr to .rodata
arm64: use mov_q instead of literal ldr
arm64: Kconfig: verify binutils support for ARM64_PTR_AUTH
lkdtm: arm64: test kernel pointer authentication
arm64: compile the kernel with ptrauth return address signing
kconfig: Add support for 'as-option'
arm64: suspend: restore the kernel ptrauth keys
arm64: __show_regs: strip PAC from lr in printk
arm64: unwind: strip PAC from kernel addresses
arm64: mask PAC bits of __builtin_return_address
arm64: initialize ptrauth keys for kernel booting task
arm64: initialize and switch ptrauth kernel keys
arm64: enable ptrauth earlier
arm64: cpufeature: handle conflicts based on capability
arm64: cpufeature: Move cpu capability helpers inside C file
...
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_TOPOLOGY_H
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#define __ASM_TOPOLOGY_H
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#include <linux/cpumask.h>
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#ifdef CONFIG_NUMA
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struct pci_bus;
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int pcibus_to_node(struct pci_bus *bus);
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#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
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cpu_all_mask : \
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cpumask_of_node(pcibus_to_node(bus)))
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#endif /* CONFIG_NUMA */
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#include <linux/arch_topology.h>
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#ifdef CONFIG_ARM64_AMU_EXTN
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/*
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* Replace task scheduler's default counter-based
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* frequency-invariance scale factor setting.
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*/
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void topology_scale_freq_tick(void);
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#define arch_scale_freq_tick topology_scale_freq_tick
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#endif /* CONFIG_ARM64_AMU_EXTN */
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/* Replace task scheduler's default frequency-invariant accounting */
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#define arch_scale_freq_capacity topology_get_freq_scale
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/* Replace task scheduler's default cpu-invariant accounting */
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#define arch_scale_cpu_capacity topology_get_cpu_scale
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/* Enable topology flag updates */
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#define arch_update_cpu_topology topology_update_cpu_topology
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/* Replace task scheduler's default thermal pressure retrieve API */
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#define arch_scale_thermal_pressure topology_get_thermal_pressure
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#include <asm-generic/topology.h>
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#endif /* _ASM_ARM_TOPOLOGY_H */
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