Summary:
Use atomic_cmpxchg to ensure that in multithreaded situations, if someone releases the buffer, it can be applied for in time. And use atomic_ulong to save free_bitmap
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
If the current platform does not require a large PATH_MAX size support and toolchain supports alloca(),
we could turn off this option to improve performance.
Signed-off-by: chao an <anchao@lixiang.com>
Modify the kernel to use only atomic_xx and atomic64_xx interfaces,
avoiding the use of sizeof or typeof to determine the type of
atomic operations, thereby simplifying the kernel's atomic
interface operations.
Signed-off-by: zhangyuan29 <zhangyuan29@xiaomi.com>
We could call backtrace from mm module and access to kasan protected mm_node.backtrace field. Disable kasan check for backtrace_format.
Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
This patch fixed userspace headers conflict. Architecture-related definition and API should not be exposed to users.
Signed-off-by: ouyangxiangzhen <ouyangxiangzhen@xiaomi.com>
In circbuf_get_read/writeptr, when circbuf is full, off == pos, and
*size = off - pos = 0. So add circbuf_is_full() condition to return
correct *size.
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
Follow the elf format, correct the memory region flag description:
Executable 0x1, Writable 0x2, Readable 0x4
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
In order to directly read the version information of the current file from elf or bin files, memory files, etc., for easy debugging and one-to-one correspondence.
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
nuttx\libs\libc\misc\lib_bitmap.c(1,1): warning C4819: The file contains a character that cannot
be represented in the current code page (936).
Signed-off-by: chenxiaoyi <chenxiaoyi@xiaomi.com>
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
[263/1096] Building C object libs/libc/CMakeFiles/c.dir/misc/lib_pathbuffer.c.obj
ctc W574: ["libs/libc/misc/lib_pathbuffer.c" 144/3] 'return' with an expression in function returning void
Signed-off-by: chao an <anchao@lixiang.com>
and move common math funtions to math32.h:
div_round_up
div_round_closest
is_power_of_2
roundup_pow_of_two
rounddown_pow_of_two
Signed-off-by: lipengfei28 <lipengfei28@xiaomi.com>
Using the ts/tick conversion functions provided in clock.h
Do this caused we want speed up the time calculation, so change:
clock_time2ticks, clock_ticks2time, clock_timespec_add,
clock_timespec_compare, clock_timespec_subtract... to MACRO
Signed-off-by: ligd <liguiding1@xiaomi.com>
The standard describes trylock as follows, trylock should never cause the system to stop running:
The pthread_mutex_trylock() function shall be equivalent to
pthread_mutex_lock(), except that if the mutex object referenced by
mutex is currently locked (by any thread, including the current thread),
the call shall return immediately.
https://linux.die.net/man/3/pthread_mutex_trylock
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
Summary:
If we disable LIB_PATHBUFFER_MALLOC, that when the path buffer is insufficient, NULL is returned to avoid applying for a buffer from the heap.
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
Summary:
Since there is a default definition for CONFIG_SMP_NCPUS in sys/types.h, we can remove #ifdef and return CONFIG_SMP_NCPUS directly.
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
Summary:
1.Remove the macro definition of getnproc in sysinfo
2.New get_nprocs_conf and get_nprocs interfaces, return CONFIG_SMP_NCPUS, return 1 when not defined
Signed-off-by: chenrun1 <chenrun1@xiaomi.com>
