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kfraser@localhost.localdomain
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>
90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
/******************************************************************************
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* tools/xenmon/setmask.c
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*
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* Simple utility for getting/setting the event mask
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*
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* Copyright (C) 2005 by Hewlett-Packard, Palo Alto and Fort Collins
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*
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* Authors: Lucy Cherkasova, lucy.cherkasova.hp.com
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* Rob Gardner, rob.gardner@hp.com
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* Diwaker Gupta, diwaker.gupta@hp.com
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* Date: August, 2005
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; under version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <getopt.h>
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#include <xenctrl.h>
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#include <xen/xen.h>
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typedef struct { int counter; } atomic_t;
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#include <xen/trace.h>
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#define XENMON (TRC_SCHED_DOM_ADD | TRC_SCHED_DOM_REM | TRC_SCHED_SWITCH_INFPREV | TRC_SCHED_SWITCH_INFNEXT | TRC_SCHED_BLOCK | TRC_SCHED_SLEEP | TRC_SCHED_WAKE | TRC_MEM_PAGE_GRANT_TRANSFER)
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int main(int argc, char * argv[])
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{
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struct xen_sysctl sysctl;
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int ret;
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int xc_handle = xc_interface_open();
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sysctl.cmd = XEN_SYSCTL_tbuf_op;
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sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION;
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sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_get_info;
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ret = xc_sysctl(xc_handle, &sysctl);
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if ( ret != 0 )
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{
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perror("Failure to get event mask from Xen");
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exit(1);
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}
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else
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{
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printf("Current event mask: 0x%.8x\n", sysctl.u.tbuf_op.evt_mask);
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}
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sysctl.cmd = XEN_SYSCTL_tbuf_op;
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sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION;
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sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_set_evt_mask;
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sysctl.u.tbuf_op.evt_mask = XENMON;
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ret = xc_sysctl(xc_handle, &sysctl);
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printf("Setting mask to 0x%.8x\n", sysctl.u.tbuf_op.evt_mask);
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if ( ret != 0 )
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{
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perror("Failure to get scheduler ID from Xen");
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exit(1);
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}
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sysctl.cmd = XEN_SYSCTL_tbuf_op;
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sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION;
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sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_get_info;
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ret = xc_sysctl(xc_handle, &sysctl);
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if ( ret != 0 )
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{
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perror("Failure to get event mask from Xen");
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exit(1);
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}
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else
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{
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printf("Current event mask: 0x%.8x\n", sysctl.u.tbuf_op.evt_mask);
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}
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xc_interface_close(xc_handle);
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return 0;
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}
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