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<sched.h>: Add sched_getcpu() and cpu_set_t

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This adds the cpu_set_t type definition and related functions
and macros used to handle CPU thread affinity.

  sched_getcpu()
  sched_setaffinity()
  sched_getaffinity()

Change-Id: If382ecafde8926341a88478062b275553645065b
This commit is contained in:
David 'Digit' Turner
2010-12-03 18:04:01 +01:00
parent 6481b91520
commit 72e6fd4242
22 changed files with 585 additions and 2 deletions
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5
libc/include/sys/linux-syscalls.h
View File

@@ -120,6 +120,8 @@
#define __NR_sched_get_priority_max (__NR_SYSCALL_BASE + 159)
#define __NR_sched_get_priority_min (__NR_SYSCALL_BASE + 160)
#define __NR_sched_rr_get_interval (__NR_SYSCALL_BASE + 161)
#define __NR_sched_setaffinity (__NR_SYSCALL_BASE + 241)
#define __NR_sched_getaffinity (__NR_SYSCALL_BASE + 242)
#define __NR_uname (__NR_SYSCALL_BASE + 122)
#define __NR_wait4 (__NR_SYSCALL_BASE + 114)
#define __NR_umask (__NR_SYSCALL_BASE + 60)
@@ -174,6 +176,7 @@
#define __NR_getsockopt (__NR_SYSCALL_BASE + 295)
#define __NR_sendmsg (__NR_SYSCALL_BASE + 296)
#define __NR_recvmsg (__NR_SYSCALL_BASE + 297)
#define __NR_getcpu (__NR_SYSCALL_BASE + 345)
#define __NR_ioprio_set (__NR_SYSCALL_BASE + 314)
#define __NR_ioprio_get (__NR_SYSCALL_BASE + 315)
#define __NR_epoll_create (__NR_SYSCALL_BASE + 250)
@@ -218,6 +221,7 @@
#define __NR_timer_delete (__NR_SYSCALL_BASE + 263)
#define __NR_utimes (__NR_SYSCALL_BASE + 271)
#define __NR_socketcall (__NR_SYSCALL_BASE + 102)
#define __NR_getcpu (__NR_SYSCALL_BASE + 318)
#define __NR_ioprio_set (__NR_SYSCALL_BASE + 289)
#define __NR_ioprio_get (__NR_SYSCALL_BASE + 290)
#define __NR_epoll_create (__NR_SYSCALL_BASE + 254)
@@ -276,6 +280,7 @@
#define __NR_socketcall (__NR_SYSCALL_BASE + 102)
#define __NR_socketcall (__NR_SYSCALL_BASE + 102)
#define __NR___socketcall (__NR_SYSCALL_BASE + 102)
#define __NR_getcpu (__NR_SYSCALL_BASE + 318)
#define __NR_ioprio_set (__NR_SYSCALL_BASE + 288)
#define __NR_ioprio_get (__NR_SYSCALL_BASE + 289)
#define __NR_epoll_create (__NR_SYSCALL_BASE + 254)

6
libc/include/sys/linux-unistd.h
View File

@@ -53,7 +53,7 @@ int acct (const char* filepath);
ssize_t read (int, void*, size_t);
ssize_t write (int, const void*, size_t);
ssize_t __pread64 (int, void *, size_t, off_t, off_t);
ssize_t __pwrite64 (int, const void *, size_t, off_t, off_t);
ssize_t __pwrite64 (int, void *, size_t, off_t, off_t);
int __open (const char*, int, mode_t);
int __openat (int, const char*, int, mode_t);
int close (int);
@@ -183,6 +183,9 @@ int sched_getparam (pid_t pid, struct sched_param *param);
int sched_get_priority_max (int policy);
int sched_get_priority_min (int policy);
int sched_rr_get_interval (pid_t pid, struct timespec *interval);
int sched_setaffinity (pid_t pid, size_t setsize, const cpu_set_t* set);
int __sched_getaffinity (pid_t pid, size_t setsize, cpu_set_t* set);
int __getcpu (unsigned *cpu, unsigned *node, void *unused);
int ioprio_set (int which, int who, int ioprio);
int ioprio_get (int which, int who);
int uname (struct utsname *);
@@ -205,7 +208,6 @@ int poll (struct pollfd *, unsigned int, long);
int eventfd (unsigned int, int);
int __set_tls (void*);
int cacheflush (long start, long end, long flags);
int eventfd (int count, int flags);
#ifdef __cplusplus
}
#endif