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>
This PR will still allow basic shell operations such as cd/ls/pwd to be used even when the environment is disabled.
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>
`puts("");` did not print a newline. The standard
behavior is to print a newline even if the string
is empty.
Signed-off-by: liamHowatt <liamjmh0@gmail.com>
reason:
1: spin_lock_init and spin_initialize have similar functionalities.
2: spin_lock and spin_unlock should be called in matching pairs.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
If the pointer is not set to zero, it will erroneously point to itself, resulting in an erroneous loop pointing
Signed-off-by: wangchen <wangchen41@xiaomi.com>
reason:
new implementation does not requires the use of enter_critical_section,
so the source code needs to be moved to user space
This reverts commit d189a86a35.
syslog_putc() have a lot of duplicate logic with syslog_write().
remove syslog_putc() and reuse syslog_write() to simplify syslog printing.
Signed-off-by: chao an <anchao@lixiang.com>
reason:
When entering an exception or interrupt, there are two sets of registers:
one is the "running regs", which we need to save,
and the other is the "ready to running regs", which we may soon use.
For consistency in logic, we can always store the "running regs" in the regs field of g_running_tasks,
otherwise it may lead to errors in the storage location of the "running regs."
When we need to access the "running regs," we should uniformly retrieve them from the regs field of g_running_tasks.
As the next step, we will rename the set_current_regs/up_current_regs functions
for each architecture to more appropriate names, solely for the purpose of identifying interrupts.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
reason:
We decouple semcount from business logic by using an independent counting variable,
which allows us to remove critical sections in many cases.
Signed-off-by: hujun5 <hujun5@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>
Some armv7-m-based SoCs do not work with atomic instructions,
even though armv7-m supports them.
To avoid using atomic instructions generated by gcc,
CONFIG_LIBC_ARCH_ATOMIC is newly introduced with which
arch_atomic.c is linked explicitly.
However, the function names need to be changed to avoid
build errors, since the functions described in stdatomic.h
are gcc built-in and inlined when the code is compiled.
About libcxx with CONFIG_LIBC_ARCH_ATOMIC, it still
does not work. It is also needed to call nx_atomic_ ver
instead of __atomic ver in
libcxx/include/__atomic/cxx_atomic_lmpl.h.
Signed-off-by: Takuya Miyasita <Takuya.Miyashita@sony.com>
Some armv7-m-based SoCs do not work with atomic instructions,
even though armv7-m supports them.
To avoid using atomic instructions generated by gcc,
CONFIG_LIBC_ARCH_ATOMIC is newly introduced with which
arch_atomic.c is linked explicitly.
However, the function names need to be changed to avoid
build errors, since the functions described in stdatomic.h
are gcc built-in and inlined when the code is compiled.
Signed-off-by: Takuya Miyasita <Takuya.Miyashita@sony.com>
1. Calling CLEAN on these folders did not have any effect
2. bin,kbin will be created during the context construction process
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
reason:
The old implementation of the SMP call, even when using the "no wait" parameter,
could still result in waiting, if invoking it within a critical section
may lead to deadlocks. Therefore, in order to implement a truly asynchronous SMP
call strategy, we have added nxsched_smp_call_async.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Some chips have different memory addressing spaces for the same
region. This is true, for instance, for ESP32-S3: the same memory
region can be accessed using the data bus or the data bus using
different address ranges. The instruction bus, however, requires
word-aligned access. That being said, it is recommended to use the
data bus while copying sections to the text heap to avoid any
illegal access using the instruction bus address which will be
later used to run the program.
Fixes psock_socket: ERROR: socket address family unsupported: 2
When using the minimal CONFIG_NET configuration typically used for
SocketCAN
Update net/inet/inet.h
Co-authored-by: Xiang Xiao <xiaoxiang781216@gmail.com>
Update net/inet/inet.h
Co-authored-by: Xiang Xiao <xiaoxiang781216@gmail.com>
