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c07ebbc9
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c07ebbc9
编写于
9月 29, 2019
作者:
B
Bernard Xiong
提交者:
GitHub
9月 29, 2019
浏览文件
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差异文件
Merge pull request #3111 from BernardXiong/spin_lock
Add spin lock API in Kernel
上级
88ad2398
71311b73
变更
10
隐藏空白更改
内联
并排
Showing
10 changed file
with
152 addition
and
13 deletion
+152
-13
include/rtdef.h
include/rtdef.h
+1
-0
include/rthw.h
include/rthw.h
+6
-0
include/rtthread.h
include/rtthread.h
+21
-0
libcpu/arm/cortex-a/cpu.c
libcpu/arm/cortex-a/cpu.c
+6
-0
libcpu/risc-v/k210/cpuport_smp.c
libcpu/risc-v/k210/cpuport_smp.c
+5
-0
src/Kconfig
src/Kconfig
+4
-4
src/SConscript
src/SConscript
+3
-0
src/cpu.c
src/cpu.c
+95
-4
src/scheduler.c
src/scheduler.c
+10
-5
src/thread.c
src/thread.c
+1
-0
未找到文件。
include/rtdef.h
浏览文件 @
c07ebbc9
...
...
@@ -577,6 +577,7 @@ struct rt_thread
rt_uint16_t
scheduler_lock_nest
;
/**< scheduler lock count */
rt_uint16_t
cpus_lock_nest
;
/**< cpus lock count */
rt_uint16_t
critical_lock_nest
;
/**< critical lock count */
#endif
/*RT_USING_SMP*/
/* priority */
...
...
include/rthw.h
浏览文件 @
c07ebbc9
...
...
@@ -143,6 +143,12 @@ typedef union {
}
tickets
;
}
rt_hw_spinlock_t
;
struct
rt_spinlock
{
rt_hw_spinlock_t
lock
;
};
void
rt_hw_spin_lock_init
(
rt_hw_spinlock_t
*
lock
);
void
rt_hw_spin_lock
(
rt_hw_spinlock_t
*
lock
);
void
rt_hw_spin_unlock
(
rt_hw_spinlock_t
*
lock
);
...
...
include/rtthread.h
浏览文件 @
c07ebbc9
...
...
@@ -391,6 +391,27 @@ rt_err_t rt_mq_recv(rt_mq_t mq,
rt_err_t
rt_mq_control
(
rt_mq_t
mq
,
int
cmd
,
void
*
arg
);
#endif
/*
* spinlock
*/
#ifdef RT_USING_SMP
struct
rt_spinlock
;
void
rt_spin_lock_init
(
struct
rt_spinlock
*
lock
);
void
rt_spin_lock
(
struct
rt_spinlock
*
lock
);
void
rt_spin_unlock
(
struct
rt_spinlock
*
lock
);
rt_base_t
rt_spin_lock_irqsave
(
struct
rt_spinlock
*
lock
);
void
rt_spin_unlock_irqrestore
(
struct
rt_spinlock
*
lock
,
rt_base_t
level
);
#else
#define rt_spin_lock_init(lock)
/* nothing */
#define rt_spin_lock(lock) rt_enter_critical()
#define rt_spin_unlock(lock) rt_exit_critical()
#define rt_spin_lock_irqsave(lock) rt_hw_interrupt_disable()
#define rt_spin_unlock_irqrestore(lock, level) rt_hw_interrupt_enable(level)
#endif
/**@}*/
#ifdef RT_USING_DEVICE
...
...
libcpu/arm/cortex-a/cpu.c
浏览文件 @
c07ebbc9
...
...
@@ -14,6 +14,7 @@
#include <board.h>
#ifdef RT_USING_SMP
int
rt_hw_cpu_id
(
void
)
{
int
cpu_id
;
...
...
@@ -25,6 +26,11 @@ int rt_hw_cpu_id(void)
return
cpu_id
;
};
void
rt_hw_spin_lock_init
(
rt_hw_spinlock_t
*
lock
)
{
lock
->
slock
=
0
;
}
void
rt_hw_spin_lock
(
rt_hw_spinlock_t
*
lock
)
{
unsigned
long
tmp
;
...
...
libcpu/risc-v/k210/cpuport_smp.c
浏览文件 @
c07ebbc9
...
...
@@ -25,6 +25,11 @@ int rt_hw_cpu_id(void)
return
read_csr
(
mhartid
);
}
void
rt_hw_spin_lock_init
(
rt_hw_spinlock_t
*
lock
)
{
((
spinlock_t
*
)
lock
)
->
lock
=
0
;
}
void
rt_hw_spin_lock
(
rt_hw_spinlock_t
*
lock
)
{
spinlock_lock
((
spinlock_t
*
)
lock
);
...
...
src/Kconfig
浏览文件 @
c07ebbc9
...
...
@@ -20,7 +20,7 @@ config RT_USING_ARCH_DATA_TYPE
config RT_USING_SMP
bool "Enable SMP(Symmetric multiprocessing)"
default n
help
help
This option should be selected by machines which have an SMP-
capable CPU.
The only effect of this option is to make the SMP-related
...
...
@@ -28,10 +28,10 @@ config RT_USING_SMP
config RT_CPUS_NR
int "Number of CPUs"
default 2
depends on RT_USING_SMP
default 2
depends on RT_USING_SMP
help
Number of CPUs in the system
Number of CPUs in the system
config RT_ALIGN_SIZE
int "Alignment size for CPU architecture data access"
...
...
src/SConscript
浏览文件 @
c07ebbc9
...
...
@@ -26,6 +26,9 @@ if GetDepend('RT_USING_MEMHEAP') == False:
if
GetDepend
(
'RT_USING_DEVICE'
)
==
False
:
SrcRemove
(
src
,
[
'device.c'
])
if
GetDepend
(
'RT_USING_SMP'
)
==
False
:
SrcRemove
(
src
,
[
'cpu.c'
])
group
=
DefineGroup
(
'Kernel'
,
src
,
depend
=
[
''
],
CPPPATH
=
CPPPATH
)
Return
(
'group'
)
src/cpu.c
浏览文件 @
c07ebbc9
...
...
@@ -7,15 +7,106 @@
* Date Author Notes
* 2018-10-30 Bernard The first version
*/
#include <rtthread.h>
#include <rthw.h>
#include <rtthread.h>
#ifdef RT_USING_SMP
static
struct
rt_cpu
rt_cpus
[
RT_CPUS_NR
];
rt_hw_spinlock_t
_cpus_lock
;
/*
* disable scheduler
*/
static
void
rt_preempt_disable
(
void
)
{
register
rt_base_t
level
;
struct
rt_thread
*
current_thread
;
/* disable interrupt */
level
=
rt_hw_local_irq_disable
();
current_thread
=
rt_thread_self
();
if
(
!
current_thread
)
{
rt_hw_local_irq_enable
(
level
);
return
;
}
/* lock scheduler for local cpu */
current_thread
->
scheduler_lock_nest
++
;
/* enable interrupt */
rt_hw_local_irq_enable
(
level
);
}
/*
* enable scheduler
*/
static
void
rt_preempt_enable
(
void
)
{
register
rt_base_t
level
;
struct
rt_thread
*
current_thread
;
/* disable interrupt */
level
=
rt_hw_local_irq_disable
();
current_thread
=
rt_thread_self
();
if
(
!
current_thread
)
{
rt_hw_local_irq_enable
(
level
);
return
;
}
/* unlock scheduler for local cpu */
current_thread
->
scheduler_lock_nest
--
;
rt_schedule
();
/* enable interrupt */
rt_hw_local_irq_enable
(
level
);
}
void
rt_spin_lock_init
(
struct
rt_spinlock
*
lock
)
{
rt_hw_spin_lock_init
(
&
lock
->
lock
);
}
RTM_EXPORT
(
rt_spin_lock_init
)
void
rt_spin_lock
(
struct
rt_spinlock
*
lock
)
{
rt_preempt_disable
();
rt_hw_spin_lock
(
&
lock
->
lock
);
}
RTM_EXPORT
(
rt_spin_lock
)
void
rt_spin_unlock
(
struct
rt_spinlock
*
lock
)
{
rt_hw_spin_unlock
(
&
lock
->
lock
);
rt_preempt_enable
();
}
RTM_EXPORT
(
rt_spin_unlock
)
rt_base_t
rt_spin_lock_irqsave
(
struct
rt_spinlock
*
lock
)
{
unsigned
long
level
;
rt_preempt_disable
();
level
=
rt_hw_local_irq_disable
();
rt_hw_spin_lock
(
&
lock
->
lock
);
return
level
;
}
RTM_EXPORT
(
rt_spin_lock_irqsave
)
void
rt_spin_unlock_irqrestore
(
struct
rt_spinlock
*
lock
,
rt_base_t
level
)
{
rt_hw_spin_unlock
(
&
lock
->
lock
);
rt_hw_local_irq_enable
(
level
);
rt_preempt_enable
();
}
RTM_EXPORT
(
rt_spin_unlock_irqrestore
)
/**
* This fucntion will return current cpu.
*/
...
...
@@ -42,7 +133,7 @@ rt_base_t rt_cpus_lock(void)
pcpu
=
rt_cpu_self
();
if
(
pcpu
->
current_thread
!=
RT_NULL
)
{
register
rt_u
int16
_t
lock_nest
=
pcpu
->
current_thread
->
cpus_lock_nest
;
register
rt_u
base
_t
lock_nest
=
pcpu
->
current_thread
->
cpus_lock_nest
;
pcpu
->
current_thread
->
cpus_lock_nest
++
;
if
(
lock_nest
==
0
)
...
...
src/scheduler.c
浏览文件 @
c07ebbc9
...
...
@@ -83,7 +83,7 @@ static void _rt_scheduler_stack_check(struct rt_thread *thread)
RT_ASSERT
(
thread
!=
RT_NULL
);
#if defined(ARCH_CPU_STACK_GROWS_UPWARD)
if
(
*
((
rt_uint8_t
*
)((
rt_ubase_t
)
thread
->
stack_addr
+
thread
->
stack_size
-
1
))
!=
'#'
||
if
(
*
((
rt_uint8_t
*
)((
rt_ubase_t
)
thread
->
stack_addr
+
thread
->
stack_size
-
1
))
!=
'#'
||
#else
if
(
*
((
rt_uint8_t
*
)
thread
->
stack_addr
)
!=
'#'
||
#endif
...
...
@@ -840,11 +840,14 @@ void rt_enter_critical(void)
*/
/* lock scheduler for all cpus */
if
(
current_thread
->
scheduler_lock_nest
==
!!
current_thread
->
cpus_lock_nest
)
if
(
current_thread
->
critical_lock_nest
==
0
)
{
rt_hw_spin_lock
(
&
_rt_critical_lock
);
}
/* critical for local cpu */
current_thread
->
critical_lock_nest
++
;
/* lock scheduler for local cpu */
current_thread
->
scheduler_lock_nest
++
;
...
...
@@ -892,7 +895,9 @@ void rt_exit_critical(void)
current_thread
->
scheduler_lock_nest
--
;
if
(
current_thread
->
scheduler_lock_nest
==
!!
current_thread
->
cpus_lock_nest
)
current_thread
->
critical_lock_nest
--
;
if
(
current_thread
->
critical_lock_nest
==
0
)
{
rt_hw_spin_unlock
(
&
_rt_critical_lock
);
}
...
...
@@ -951,9 +956,9 @@ rt_uint16_t rt_critical_level(void)
#ifdef RT_USING_SMP
struct
rt_thread
*
current_thread
=
rt_cpu_self
()
->
current_thread
;
return
current_thread
->
scheduler
_lock_nest
;
return
current_thread
->
critical
_lock_nest
;
#else
return
rt_scheduler_lock_nest
;
return
rt_scheduler_lock_nest
;
#endif
/*RT_USING_SMP*/
}
RTM_EXPORT
(
rt_critical_level
);
...
...
src/thread.c
浏览文件 @
c07ebbc9
...
...
@@ -172,6 +172,7 @@ static rt_err_t _rt_thread_init(struct rt_thread *thread,
/* lock init */
thread
->
scheduler_lock_nest
=
0
;
thread
->
cpus_lock_nest
=
0
;
thread
->
critical_lock_nest
=
0
;
#endif
/*RT_USING_SMP*/
/* initialize cleanup function and user data */
...
...
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