sched_setaffinity on ia64

set and get a thread's CPU affinity mask

sys_sched_setaffinity(pid_t pid, unsigned int len, unsigned long *user_mask_ptr)
number1231 (0x4cf)
abicommon
entry pointsys_sched_setaffinity
sinceLinux 5.0 or earlier (5.0 is the first release scanned for ia64)
man pagesched_setaffinity(2)
sourceelixir.bootlin.com

Registers

registervalue
r151231, the syscall number
out0pid_t pid
out1unsigned int len
out2unsigned long *user_mask_ptr
r8the return value

Then run break 0x100000 to enter the kernel.

The kernel uses r10 to signal an error.

The pipe call returns file descriptors in r8 and r9.

This architecture was removed from the Linux kernel in Linux 6.7. The newest release with a syscall table here is Linux 6.6. 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/ia64/sched_setaffinity?kernel=all