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emellor@leeni.uk.xensource.com
a22292f2bb
Valgrind cannot see when a hypercall has initialised entries in a data structure, so appropriate memsets have been placed before using dom0_op_t, privcmd_hypercall_t, and a couple of miscellaneous blocks passed into this layer. This initialises the block so that valgrind considers it to be valid, but the data therein will be immediately overwritten by the hypercall, all being well. These changes are semantically neutral if -DVALGRIND is not set. Signed-off-by: Ewan Mellor <ewan@xensource.com>
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/******************************************************************************
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* xc_bvtsched.c
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*
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* API for manipulating parameters of the Borrowed Virtual Time scheduler.
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*
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* Copyright (c) 2003, K A Fraser.
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*/
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#include "xc_private.h"
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int xc_bvtsched_global_set(int xc_handle,
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unsigned long ctx_allow)
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{
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DECLARE_DOM0_OP;
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op.cmd = DOM0_SCHEDCTL;
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op.u.schedctl.sched_id = SCHED_BVT;
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op.u.schedctl.direction = SCHED_INFO_PUT;
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op.u.schedctl.u.bvt.ctx_allow = ctx_allow;
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return do_dom0_op(xc_handle, &op);
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}
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int xc_bvtsched_global_get(int xc_handle,
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unsigned long *ctx_allow)
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{
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DECLARE_DOM0_OP;
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int ret;
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op.cmd = DOM0_SCHEDCTL;
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op.u.schedctl.sched_id = SCHED_BVT;
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op.u.schedctl.direction = SCHED_INFO_GET;
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ret = do_dom0_op(xc_handle, &op);
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*ctx_allow = op.u.schedctl.u.bvt.ctx_allow;
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return ret;
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}
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int xc_bvtsched_domain_set(int xc_handle,
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uint32_t domid,
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uint32_t mcuadv,
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int warpback,
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int32_t warpvalue,
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long long warpl,
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long long warpu)
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{
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DECLARE_DOM0_OP;
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struct bvt_adjdom *bvtadj = &op.u.adjustdom.u.bvt;
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op.cmd = DOM0_ADJUSTDOM;
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op.u.adjustdom.domain = (domid_t)domid;
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op.u.adjustdom.sched_id = SCHED_BVT;
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op.u.adjustdom.direction = SCHED_INFO_PUT;
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bvtadj->mcu_adv = mcuadv;
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bvtadj->warpback = warpback;
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bvtadj->warpvalue = warpvalue;
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bvtadj->warpl = warpl;
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bvtadj->warpu = warpu;
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return do_dom0_op(xc_handle, &op);
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}
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int xc_bvtsched_domain_get(int xc_handle,
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uint32_t domid,
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uint32_t *mcuadv,
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int *warpback,
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int32_t *warpvalue,
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long long *warpl,
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long long *warpu)
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{
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DECLARE_DOM0_OP;
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int ret;
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struct bvt_adjdom *adjptr = &op.u.adjustdom.u.bvt;
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op.cmd = DOM0_ADJUSTDOM;
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op.u.adjustdom.domain = (domid_t)domid;
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op.u.adjustdom.sched_id = SCHED_BVT;
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op.u.adjustdom.direction = SCHED_INFO_GET;
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ret = do_dom0_op(xc_handle, &op);
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*mcuadv = adjptr->mcu_adv;
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*warpback = adjptr->warpback;
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*warpvalue = adjptr->warpvalue;
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*warpl = adjptr->warpl;
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*warpu = adjptr->warpu;
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return ret;
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}
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