nuttx/libs/libc/sched/Make.defs

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############################################################################
# libs/libc/sched/Make.defs
#
# SPDX-License-Identifier: Apache-2.0
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
# Add the sched C files to the build
CSRCS += sched_getprioritymax.c sched_getprioritymin.c
CSRCS += task_cancelpt.c task_setcancelstate.c task_setcanceltype.c
CSRCS += task_testcancel.c task_gettid.c
sched/clock: support using CLOCKFD to call clock_getres This patch extends CLOCKFD support to clock_getres(), allowing applications to query the resolution of PTP clocks through file descriptors using the standard POSIX clock API. Key changes include: 1. Move clock_getres() from libc to kernel: - Relocated from libs/libc/sched/clock_getres.c to sched/clock/ - Enables direct kernel-level file descriptor handling - Maintains POSIX compliance while adding CLOCKFD support 2. CLOCKFD support in clock_getres(): - Detects CLOCKFD-encoded clockids using CLOCKFD_TO_FD() check - Extracts file descriptor from clockid parameter - Validates file descriptor through fs_getfilep() - Issues PTP_CLOCK_GETRES ioctl to query clock resolution 3. PTP clock resolution query: - Retrieves resolution from PTP clock device via ioctl - Returns nanosecond-precision timing resolution - Enables applications to determine clock accuracy capabilities - Falls back to standard clock resolution for non-CLOCKFD clockids 4. Error handling: - Returns EINVAL for invalid CLOCKFD file descriptors - Properly manages file reference counting with fs_putfilep() - Maintains backward compatibility with existing clock types 5. Build system updates: - Updated libs/libc/sched/CMakeLists.txt and Make.defs - Updated sched/clock/CMakeLists.txt to include clock_getres.c - Ensures proper compilation in kernel context Usage example: int fd = open("/dev/ptp0", O_RDONLY); struct timespec res; clock_getres(CLOCKFD(fd), &res); /* Query PTP clock resolution */ printf("Resolution: %ld.%09ld sec\n", res.tv_sec, res.tv_nsec); close(fd); This completes the basic POSIX clock API support for dynamic PTP clocks, providing applications with comprehensive clock information access. Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2025-03-20 22:46:44 +08:00
CSRCS += clock_getcpuclockid.c
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ifeq ($(CONFIG_SMP),y)
CSRCS += sched_cpucount.c
endif
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CSRCS += sched_dumpstack.c sched_backtrace.c
endif
ifneq ($(CONFIG_BUILD_KERNEL),y)
CSRCS += task_startup.c
endif # CONFIG_BUILD_KERNEL
# Add the sched directory to the build
DEPPATH += --dep-path sched
VPATH += :sched