This file is part of systemd.
Copyright 2010 Lennart Poettering
+ Copyright 2012 Holger Hans Peter Freyther
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
}
c->cpu_sched_policy = x;
+ /* Moving to or from real-time policy? We need to adjust the priority */
+ c->cpu_sched_priority = CLAMP(c->cpu_sched_priority, sched_get_priority_min(x), sched_get_priority_max(x));
c->cpu_sched_set = true;
return 0;
void *userdata) {
ExecContext *c = data;
- int i;
+ int i, min, max;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
- /* On Linux RR/FIFO have the same range */
- if (safe_atoi(rvalue, &i) < 0 || i < sched_get_priority_min(SCHED_RR) || i > sched_get_priority_max(SCHED_RR)) {
+ if (safe_atoi(rvalue, &i) < 0) {
log_error("[%s:%u] Failed to parse CPU scheduling priority, ignoring: %s", filename, line, rvalue);
return 0;
}
+
+ /* On Linux RR/FIFO range from 1 to 99 and OTHER/BATCH may only be 0 */
+ min = sched_get_priority_min(c->cpu_sched_policy);
+ max = sched_get_priority_max(c->cpu_sched_policy);
+
+ if (i < min || i > max) {
+ log_error("[%s:%u] CPU scheduling priority is out of range, ignoring: %s", filename, line, rvalue);
+ return 0;
+ }
+
c->cpu_sched_priority = i;
c->cpu_sched_set = true;