bbe5e1e6eb
Namespaced the generated headers with `zephyr` to prevent potential conflict with other headers. Introduce a temporary Kconfig `LEGACY_GENERATED_INCLUDE_PATH` that is enabled by default. This allows the developers to continue the use of the old include paths for the time being until it is deprecated and eventually removed. The Kconfig will generate a build-time warning message, similar to the `CONFIG_TIMER_RANDOM_GENERATOR`. Updated the includes path of in-tree sources accordingly. Most of the changes here are scripted, check the PR for more info. Signed-off-by: Yong Cong Sin <ycsin@meta.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/drivers/timer/system_timer.h>
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#include <zephyr/sys_clock.h>
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#include <kernel_arch_interface.h>
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void z_impl_k_busy_wait(uint32_t usec_to_wait)
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{
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SYS_PORT_TRACING_FUNC_ENTER(k_thread, busy_wait, usec_to_wait);
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if (usec_to_wait == 0U) {
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SYS_PORT_TRACING_FUNC_EXIT(k_thread, busy_wait, usec_to_wait);
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return;
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}
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#if defined(CONFIG_ARCH_HAS_CUSTOM_BUSY_WAIT)
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arch_busy_wait(usec_to_wait);
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#elif defined(CONFIG_SYS_CLOCK_EXISTS)
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uint32_t start_cycles = k_cycle_get_32();
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uint32_t cycles_to_wait = k_us_to_cyc_ceil32(usec_to_wait);
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for (;;) {
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uint32_t current_cycles = k_cycle_get_32();
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/* this handles the rollover on an unsigned 32-bit value */
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if ((current_cycles - start_cycles) >= cycles_to_wait) {
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break;
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}
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}
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#else
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/*
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* Crude busy loop for the purpose of being able to configure out
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* system timer support.
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*/
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unsigned int loops_per_usec = CONFIG_BUSYWAIT_CPU_LOOPS_PER_USEC;
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unsigned int loops = loops_per_usec * usec_to_wait;
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while (loops-- > 0) {
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arch_nop();
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}
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#endif
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SYS_PORT_TRACING_FUNC_EXIT(k_thread, busy_wait, usec_to_wait);
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}
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#ifdef CONFIG_USERSPACE
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static inline void z_vrfy_k_busy_wait(uint32_t usec_to_wait)
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{
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z_impl_k_busy_wait(usec_to_wait);
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}
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#include <zephyr/syscalls/k_busy_wait_mrsh.c>
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#endif /* CONFIG_USERSPACE */
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