Xiang Xiao

Implement spinlock on top of atomic api and remove up_testset

2

See the discussion here: https://github.com/apache/incubator-nuttx/pull/6283

Replace all place which use semaphore as lock with mutex wrapper

4

See the discussion: https://github.com/apache/incubator-nuttx/pull/5070 and https://www.mail-archive.com/[email protected]/msg07312.html

## Summary it's easy to handle \n or \r\n ending correctly, so let's reduce the possible option to one(EOL_IS_CR). ## Impact ## Testing

## Summary ## Impact defconfig with DEFAULT_SMALL ## Testing Pass CI

fs: Add model field to geometry and mtd_geometry_s

6

## Summary The model is very useful to track the device info. The upcoming patch will addd model info driver by driver. ## Impact New field ## Testing

libc/pthread: return EBUSY when barrier is in use

12

## Summary specified here: https://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_barrier_destroy.html ## Impact More confirm to the standard. ## Testing

Remove the buffer argument from loc_getenv

7

1.Avoid to allocate the big buffer on the caller stack 2.The temporary buffer is only used on cygwin

by switching to free_wait_list_head directly

The final result should be same as before