void set_vcpu_migration_delay_func(int argc, char *argv[])
{
struct xen_sysctl_credit_schedule sparam;
int value;
fprintf(stderr, "WARNING: using xenpm for this purpose is deprecated."
" Check out `xl sched-credit -s -m DELAY'\n");
if ( argc != 1 || (value = atoi(argv[0])) < 0 ) {
fprintf(stderr, "Missing or invalid argument(s)\n");
exit(EINVAL);
}
if ( xc_sched_credit_params_get(xc_handle, 0, &sparam) < 0 ) {
fprintf(stderr, "getting Credit scheduler parameters failed\n");
exit(EINVAL);
}
sparam.vcpu_migr_delay_us = value;
if ( !xc_sched_credit_params_set(xc_handle, 0, &sparam) )
printf("set vcpu migration delay to %d us succeeded\n", value);
else
fprintf(stderr, "set vcpu migration delay failed (%d - %s)\n",
errno, strerror(errno));
}
int libxl_sched_credit_params_set(libxl_ctx *ctx, uint32_t poolid,
libxl_sched_credit_params *scinfo)
{
struct xen_sysctl_credit_schedule sparam;
int r, rc;
GC_INIT(ctx);
if (scinfo->tslice_ms < XEN_SYSCTL_CSCHED_TSLICE_MIN
|| scinfo->tslice_ms > XEN_SYSCTL_CSCHED_TSLICE_MAX) {
LOG(ERROR, "Time slice out of range, valid range is from %d to %d",
XEN_SYSCTL_CSCHED_TSLICE_MIN, XEN_SYSCTL_CSCHED_TSLICE_MAX);
rc = ERROR_INVAL;
goto out;
}
rc = sched_ratelimit_check(gc, scinfo->ratelimit_us);
if (rc) {
goto out;
}
if (scinfo->ratelimit_us > scinfo->tslice_ms*1000) {
LOG(ERROR, "Ratelimit cannot be greater than timeslice");
rc = ERROR_INVAL;
goto out;
}
sparam.tslice_ms = scinfo->tslice_ms;
sparam.ratelimit_us = scinfo->ratelimit_us;
r = xc_sched_credit_params_set(ctx->xch, poolid, &sparam);
if ( r < 0 ) {
LOGE(ERROR, "Setting Credit scheduler parameters");
rc = ERROR_FAIL;
goto out;
}
scinfo->tslice_ms = sparam.tslice_ms;
scinfo->ratelimit_us = sparam.ratelimit_us;
rc = 0;
out:
GC_FREE;
return rc;
}
