I found this structure in kernel.h and an example of a function that uses it but I just want to make sure I understand. Does the sysinfo function simply fill up a sysinfo struct with the appropriate data like I'd expect or does it need to have any additional actions taken to set it up? Presumably I could just include the appropriate headers and do this in sched.c to set the tunables based on the current situation: struct sysinfo s_info; sysinfo(&s_info); This was the original example from http://www.linuxvalley.it/encyclopedia/ldp/manpage/man2/intro.2.php: EXAMPLE function #include <stdio.h> #include <linux/unistd.h> /* for _syscallX macros/related stuff */ #include <linux/kernel.h> /* for struct sysinfo */ _syscall1(int, sysinfo, struct sysinfo *, info); /* Note: if you copy directly from the nroff source, remember to REMOVE the extra backslashes in the printf statement. */ int main(void) { struct sysinfo s_info; int error; error = sysinfo(&s_info); printf("code error = %d\n", error); printf("Uptime = %ds\nLoad: 1 min %d / 5 min %d / 15 min %d\n" "RAM: total %d / free %d / shared %d\n" "Memory in buffers = %d\nSwap: total %d / free %d\n" "Number of processes = %d\n", s_info.uptime, s_info.loads[0], s_info.loads[1], s_info.loads[2], s_info.totalram, s_info.freeram, s_info.sharedram, s_info.bufferram, s_info.totalswap, s_info.freeswap, s_info.procs); return(0); } ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
