sched_setaffinity on metag

set and get a thread's CPU affinity mask

sys_sched_setaffinity(pid_t pid, unsigned int len, unsigned long *user_mask_ptr)
number122 (0x7a)
abicommon
entry pointsys_sched_setaffinity
sinceLinux 3.9 or earlier (3.9 is the first release scanned for metag)
man pagesched_setaffinity(2)
sourceelixir.bootlin.com

Registers

registervalue
D1Re0122, the syscall number
D1Ar1pid_t pid
D0Ar2unsigned int len
D1Ar3unsigned long *user_mask_ptr
D0Re0the return value

Then run SWITCH #0x440001 to enter the kernel.

Values wider than one register are packed into consecutive arguments.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/metag/sched_setaffinity?kernel=all