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sched: export sched_getcpu API in AMP mode

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Some app with same code runs on different cores in AMP mode,
need known physical core id on which the function is called.

Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
This commit is contained in:
fangxinyong 2024-06-13 08:02:48 +08:00 committed by Xiang Xiao
parent 56495bc9ce
commit 76508d42a9
6 changed files with 9 additions and 15 deletions
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3
include/sched.h
View file

@ -235,6 +235,7 @@ void task_testcancel(void);
/* Task Scheduling Interfaces (based on POSIX APIs) */
int sched_getcpu(void);
int sched_setparam(pid_t pid, FAR const struct sched_param *param);
int sched_getparam(pid_t pid, FAR struct sched_param *param);
int sched_setscheduler(pid_t pid, int policy,
@ -252,12 +253,10 @@ int sched_setaffinity(pid_t pid, size_t cpusetsize,
FAR const cpu_set_t *mask);
int sched_getaffinity(pid_t pid, size_t cpusetsize, FAR cpu_set_t *mask);
int sched_cpucount(FAR const cpu_set_t *set);
int sched_getcpu(void);
#else
# define sched_setaffinity(p, c, m) 0
# define sched_getaffinity(p, c, m) (*(m) |= (1 << 0), 0)
# define sched_cpucount(s) 1
# define sched_getcpu() 0
#endif /* CONFIG_SMP */
/* Task Switching Interfaces (non-standard) */

2
include/sys/syscall_lookup.h
View file

@ -36,6 +36,7 @@ SYSCALL_LOOKUP(prctl, 2)
SYSCALL_LOOKUP(getppid, 0)
#endif
SYSCALL_LOOKUP(sched_getcpu, 0)
SYSCALL_LOOKUP(sched_getparam, 2)
SYSCALL_LOOKUP(sched_getscheduler, 1)
SYSCALL_LOOKUP(sched_lock, 0)
@ -53,7 +54,6 @@ SYSCALL_LOOKUP(nxsched_get_stackinfo, 2)
#ifdef CONFIG_SMP
SYSCALL_LOOKUP(sched_getaffinity, 3)
SYSCALL_LOOKUP(sched_getcpu, 0)
SYSCALL_LOOKUP(sched_setaffinity, 3)
#endif

11
sched/sched/CMakeLists.txt
View file

@ -44,6 +44,7 @@ set(SRCS
sched_lockcount.c
sched_idletask.c
sched_self.c
sched_getcpu.c
sched_get_stackinfo.c
sched_get_tls.c
sched_sysinfo.c
@ -55,14 +56,8 @@ if(CONFIG_PRIORITY_INHERITANCE)
endif()
if(CONFIG_SMP)
list(
APPEND
SRCS
sched_cpuselect.c
sched_getcpu.c
sched_getaffinity.c
sched_setaffinity.c
sched_process_delivered.c)
list(APPEND SRCS sched_cpuselect.c sched_getaffinity.c sched_setaffinity.c
sched_process_delivered.c)
endif()
if(CONFIG_SIG_SIGSTOP_ACTION)

4
sched/sched/Make.defs
View file

@ -30,14 +30,14 @@ CSRCS += sched_setscheduler.c sched_getscheduler.c
CSRCS += sched_yield.c sched_rrgetinterval.c sched_foreach.c
CSRCS += sched_lock.c sched_unlock.c sched_lockcount.c
CSRCS += sched_idletask.c sched_self.c sched_get_stackinfo.c sched_get_tls.c
CSRCS += sched_sysinfo.c sched_reprioritizertr.c sched_get_stateinfo.c
CSRCS += sched_sysinfo.c sched_reprioritizertr.c sched_get_stateinfo.c sched_getcpu.c
ifeq ($(CONFIG_PRIORITY_INHERITANCE),y)
CSRCS += sched_reprioritize.c
endif
ifeq ($(CONFIG_SMP),y)
CSRCS += sched_cpuselect.c sched_getcpu.c sched_process_delivered.c
CSRCS += sched_cpuselect.c sched_process_delivered.c
CSRCS += sched_getaffinity.c sched_setaffinity.c
endif

2
sched/sched/sched_getcpu.c
View file

@ -63,5 +63,5 @@
int sched_getcpu(void)
{
return this_cpu(); /* Does not fail */
return up_cpu_index(); /* Does not fail */
}

2
syscall/syscall.csv
View file

@ -136,7 +136,7 @@
"rmmod","nuttx/module.h","defined(CONFIG_MODULE)","int","FAR void *"
"sched_backtrace","sched.h","defined(CONFIG_SCHED_BACKTRACE)","int","pid_t","FAR void **","int","int"
"sched_getaffinity","sched.h","defined(CONFIG_SMP)","int","pid_t","size_t","FAR cpu_set_t *"
"sched_getcpu","sched.h","defined(CONFIG_SMP)","int"
"sched_getcpu","sched.h","","int"
"sched_getparam","sched.h","","int","pid_t","FAR struct sched_param *"
"sched_getscheduler","sched.h","","int","pid_t"
"sched_lock","sched.h","","int"

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