chao an 87f134cfaa sched/sleep: replace all Signal-based sleep implement to Scheduled sleep ... Nuttx currently has 2 types of sleep interfaces: 1. Signal-scheduled sleep: nxsig_sleep() / nxsig_usleep() / nxsig_nanosleep() Weaknesses: a. Signal-dependent: The signal-scheduled sleep method is bound to the signal framework, while some driver sleep operations do not depend on signals. b. Timespec conversion: Signal-scheduled sleep involves timespec conversion, which has a significant impact on performance. 2. Busy sleep: up_mdelay() / up_udelay() Weaknesses: a. Does not actively trigger scheduling, occupy the CPU loading. 3. New interfaces: Scheduled sleep: nxsched_sleep() / nxsched_usleep() / nxsched_msleep() / nxsched_ticksleep() Strengths: a. Does not depend on the signal framework. b. Tick-based, without additional computational overhead. Currently, the Nuttx driver framework extensively uses nxsig_* interfaces. However, the driver does not need to rely on signals or timespec conversion. Therefore, a new set of APIs is added to reduce dependencies on other modules. (This PR also aims to make signals optional, further reducing the code size of Nuttx.) Signed-off-by: chao an <anchao.archer@bytedance.com>		2025-10-17 14:05:02 +08:00
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adb.c
cdcacm.c	drivers/usbdev/cdcacm: Add a mutex around driver initialize / uninitialize	2025-10-11 00:47:02 +08:00
cdcacm.h
cdcacm_desc.c
cdcecm.c
cdcecm.h
cdcncm.c
CMakeLists.txt
composite.c
composite.h
composite_desc.c
dfu.c
Kconfig
Make.defs
mtp.c
pl2303.c
rndis.c
rndis_std.h
usbdev_desc.c
usbdev_fs.c
usbdev_fs.h
usbdev_req.c
usbdev_strings.c
usbdev_trace.c
usbdev_trprintf.c
usbmsc.c
usbmsc.h
usbmsc_desc.c
usbmsc_scsi.c	sched/sleep: replace all Signal-based sleep implement to Scheduled sleep	2025-10-17 14:05:02 +08:00