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1df421476a
1. platform_op -- used by dom0 kernel to perform actions on the
hardware platform (e.g., MTRR access, microcode update, platform
quirks, ...)
2. domctl -- used by management tools to control a specified domain
3. sysctl -- used by management tools for system-wide actions
Benefits include more sensible factoring of actions to
hypercalls. Also allows tool compatibility to be tracked separately
from the dom0 kernel. The assumption is that it will be easier to
replace libxenctrl, libxenguest and Xen as a matched set if the
dom0 kernel does not need to be replaced too (e.g., because that
would require vendor revalidation).
From here on we hope to maintain dom0 kernel compatibility. This
promise is not extended to tool compatibility beyond the existing
guarantee that compatibility will not be broken within a three-level
stable release [3.0.2, 3.0.3, etc.].
Signed-off-by: Keir Fraser <keir@xensource.com>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/******************************************************************************
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* xc_sedf.c
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*
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* API for manipulating parameters of the Simple EDF scheduler.
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*
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* changes by Stephan Diestelhorst
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* based on code
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* by Mark Williamson, Copyright (c) 2004 Intel Research Cambridge.
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*/
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#include "xc_private.h"
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int xc_sedf_domain_set(
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int xc_handle,
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uint32_t domid,
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uint64_t period,
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uint64_t slice,
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uint64_t latency,
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uint16_t extratime,
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uint16_t weight)
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{
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DECLARE_DOMCTL;
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struct xen_domctl_sched_sedf *p = &domctl.u.scheduler_op.u.sedf;
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domctl.cmd = XEN_DOMCTL_scheduler_op;
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domctl.domain = (domid_t)domid;
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domctl.u.scheduler_op.sched_id = XEN_SCHEDULER_SEDF;
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domctl.u.scheduler_op.cmd = XEN_DOMCTL_SCHEDOP_putinfo;
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p->period = period;
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p->slice = slice;
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p->latency = latency;
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p->extratime = extratime;
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p->weight = weight;
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return do_domctl(xc_handle, &domctl);
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}
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int xc_sedf_domain_get(
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int xc_handle,
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uint32_t domid,
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uint64_t *period,
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uint64_t *slice,
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uint64_t *latency,
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uint16_t *extratime,
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uint16_t *weight)
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{
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DECLARE_DOMCTL;
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int ret;
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struct xen_domctl_sched_sedf *p = &domctl.u.scheduler_op.u.sedf;
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domctl.cmd = XEN_DOMCTL_scheduler_op;
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domctl.domain = (domid_t)domid;
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domctl.u.scheduler_op.sched_id = XEN_SCHEDULER_SEDF;
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domctl.u.scheduler_op.cmd = XEN_DOMCTL_SCHEDOP_getinfo;
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ret = do_domctl(xc_handle, &domctl);
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*period = p->period;
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*slice = p->slice;
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*latency = p->latency;
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*extratime = p->extratime;
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*weight = p->weight;
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return ret;
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}
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