0bcdae2c62
Platforms that support IPIs allow them to be broadcast via the new arch_sched_broadcast_ipi() routine (replacing arch_sched_ipi()). Those that also allow IPIs to be directed to specific CPUs may use arch_sched_directed_ipi() to do so. As the kernel has the capability to track which CPUs may need an IPI (see CONFIG_IPI_OPTIMIZE), this commit updates the signalling of tracked IPIs to use the directed version if supported; otherwise they continue to use the broadcast version. Platforms that allow directed IPIs may see a significant reduction in the number of IPI related ISRs when CONFIG_IPI_OPTIMIZE is enabled and the number of CPUs increases. These platforms can be identified by the Kconfig option CONFIG_ARCH_HAS_DIRECTED_IPIS. Signed-off-by: Peter Mitsis <peter.mitsis@intel.com>
91 lines
2.0 KiB
C
91 lines
2.0 KiB
C
/*
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* Copyright (c) 2014-2016 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Private kernel definitions
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*
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* This file contains private kernel structures definitions and various
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* other definitions for the ARCv2 processor architecture.
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*
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* This file is also included by assembly language files which must #define
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* _ASMLANGUAGE before including this header file. Note that kernel
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* assembly source files obtains structure offset values via "absolute
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* symbols" in the offsets.o module.
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*/
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#ifndef ZEPHYR_ARCH_ARC_INCLUDE_KERNEL_ARCH_FUNC_H_
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#define ZEPHYR_ARCH_ARC_INCLUDE_KERNEL_ARCH_FUNC_H_
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#if !defined(_ASMLANGUAGE)
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#include <kernel_arch_data.h>
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#include <v2/irq.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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static ALWAYS_INLINE void arch_kernel_init(void)
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{
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z_irq_setup();
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}
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/**
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*
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* @brief Indicates the interrupt number of the highest priority
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* active interrupt
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*
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* @return IRQ number
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*/
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static ALWAYS_INLINE int Z_INTERRUPT_CAUSE(void)
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{
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uint32_t irq_num = z_arc_v2_aux_reg_read(_ARC_V2_ICAUSE);
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return irq_num;
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}
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static inline bool arch_is_in_isr(void)
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{
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return z_arc_v2_irq_unit_is_in_isr();
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}
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extern void z_thread_entry_wrapper(void);
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extern void z_user_thread_entry_wrapper(void);
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extern void z_arc_userspace_enter(k_thread_entry_t user_entry, void *p1,
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void *p2, void *p3, uint32_t stack, uint32_t size,
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struct k_thread *thread);
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extern void z_arc_fatal_error(unsigned int reason, const struct arch_esf *esf);
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extern void z_arc_switch(void *switch_to, void **switched_from);
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static inline void arch_switch(void *switch_to, void **switched_from)
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{
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z_arc_switch(switch_to, switched_from);
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}
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#if !defined(CONFIG_MULTITHREADING)
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extern FUNC_NORETURN void z_arc_switch_to_main_no_multithreading(
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k_thread_entry_t main_func, void *p1, void *p2, void *p3);
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#define ARCH_SWITCH_TO_MAIN_NO_MULTITHREADING \
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z_arc_switch_to_main_no_multithreading
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#endif /* !CONFIG_MULTITHREADING */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ASMLANGUAGE */
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#endif /* ZEPHYR_ARCH_ARC_INCLUDE_KERNEL_ARCH_FUNC_H_ */
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