In ./fs/inode directory, the variable name FAR struct inode *node is named inconsistently, with some using node and others using inode. To facilitate understanding, we will standardize the naming to FAR struct inode *inode.
Signed-off-by: cuiziwei <cuiziwei@xiaomi.com>
/home/neo/projects/vela/nuttx/fs/vfs/fs_dup2.c: In function 'file_dup3':
/home/neo/projects/vela/nuttx/fs/inode/inode.h:73:35: error: implicit declaration of function '_SCHED_GETTID' [-Werror=implicit-function-declaration]
73 | int n = sched_backtrace(_SCHED_GETTID(), \
| ^~~~~~~~~~~~~
/home/neo/projects/vela/nuttx/fs/vfs/fs_dup2.c:177:3: note: in expansion of macro 'FS_ADD_BACKTRACE'
177 | FS_ADD_BACKTRACE(filep2);
Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
Summary:
When the device reboot through reboot_notify to notify the task fsync time, if there is a task in the exit process, there may be priority robbed off the phenomenon, and at this time the group->tg_filelist crefs has been 0, resulting in the ASSERT
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
Example:
When executing "df -h" on Core A to view mount information, this
process will traverse inode nodes, thereby holding the inode_lock.
Since the inode type of the mount point may be rpmsgfs, it will fetch statfs
information from another Core B.
Meanwhile, rcS on Core B needs to obtain file information from Core A,
which will be achieved by fetching stat information through rpmsgfs.
When this message arrives at Core A, a deadlock can occur between Core A's
rptun ap and nsh task.
However, both of these places involve read operations only, thus a reader-writer lock
can be utilized to prevent such a deadlock.
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
Summary:
1.Add configuration to allocate memory from the specified section
2.Replace all memory operations (kmm_) in the vfs with
fs_heap_. When FS_HEAPSIZE > 0, memory is requested for the file system by specifying a configured heap location. By default (i.e. FS_HEAPSIZE=0) fs_heap_ is equivalent to kmm_
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
Summary:
1.Modified the i_crefs from int16_t to atomic_int
2.Modified the i_crefs add, delete, read, and initialize interfaces to atomic operations
The purpose of this change is to avoid deadlock in cross-core scenarios, where A Core blocks B Core’s request for a write operation to A Core when A Core requests a read operation to B Core.
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
Summary:
1.Added msync callback in struct mm_map_entry_s
2.Added msync API in fs_msync.c
3.Added static msync_rammap for rammap.
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
sched implementation not depends on macro abstraction, so revert below commit:
This reverts commit 4e62d0005a
This reverts commit 0f0c370520
This reverts commit ad0efd04ee
Signed-off-by: chao an <anchao@lixiang.com>
Pre-allocated files to avoid allocator access during thread creation
phase, For functional safety requirements, increase
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK could also avoid allocator access
caused by the file descriptor exceeding the limit.
For Task Termination, the time consumption will be reduced ~3us (Tricore TC397 300MHZ):
10.65(us) -> 7.35(us)
NOTE:
This commit will not waste of extra heap, just pre-allocates the list of files for task_group.
Signed-off-by: chao an <anchao@lixiang.com>
The task files should consult the "spawn action" and "O_CLOEXEC flags"
to determine further whether the file should be duplicated.
This PR will further optimize file list duplicating to avoid the performance
regression caused by additional file operations.
Signed-off-by: chao an <anchao@xiaomi.com>
VELAPLATFO-18473
refs:
https://man7.org/linux/man-pages/man2/fcntl.2.html
If the FD_CLOEXEC bit is set, the file descriptor will automatically
be closed during a successful execve(2).
(If the execve(2) fails, the file descriptor is left open.)
modify:
1. Ensure that the child task copies all fds of the parent task,
including those with O_CLOEXE.
2. Make sure spawn_file_action is executed under fd with O_CLOEXEC,
otherwise it will fail.
3. When a new task is activated or exec is called, close all fds
with O_CLOEXEC flags.
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
chenrun1