1 | /****************************************************************************** |
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2 | * tools/xenmon/setmask.c |
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3 | * |
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4 | * Simple utility for getting/setting the event mask |
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5 | * |
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6 | * Copyright (C) 2005 by Hewlett-Packard, Palo Alto and Fort Collins |
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7 | * |
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8 | * Authors: Lucy Cherkasova, lucy.cherkasova.hp.com |
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9 | * Rob Gardner, rob.gardner@hp.com |
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10 | * Diwaker Gupta, diwaker.gupta@hp.com |
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11 | * Date: August, 2005 |
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12 | * |
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13 | * This program is free software; you can redistribute it and/or modify |
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14 | * it under the terms of the GNU General Public License as published by |
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15 | * the Free Software Foundation; under version 2 of the License. |
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16 | * |
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17 | * This program is distributed in the hope that it will be useful, |
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18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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20 | * GNU General Public License for more details. |
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21 | * |
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22 | * You should have received a copy of the GNU General Public License |
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23 | * along with this program; if not, write to the Free Software |
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24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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25 | */ |
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26 | |
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27 | #include <stdlib.h> |
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28 | #include <stdio.h> |
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29 | #include <sys/types.h> |
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30 | #include <fcntl.h> |
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31 | #include <unistd.h> |
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32 | #include <errno.h> |
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33 | #include <getopt.h> |
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34 | #include <xenctrl.h> |
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35 | #include <xen/xen.h> |
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36 | typedef struct { int counter; } atomic_t; |
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37 | #include <xen/trace.h> |
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38 | |
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39 | #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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40 | |
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41 | int main(int argc, char * argv[]) |
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42 | { |
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43 | struct xen_sysctl sysctl; |
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44 | int ret; |
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45 | |
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46 | int xc_handle = xc_interface_open(); |
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47 | sysctl.cmd = XEN_SYSCTL_tbuf_op; |
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48 | sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION; |
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49 | sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_get_info; |
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50 | ret = xc_sysctl(xc_handle, &sysctl); |
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51 | if ( ret != 0 ) |
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52 | { |
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53 | perror("Failure to get event mask from Xen"); |
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54 | exit(1); |
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55 | } |
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56 | else |
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57 | { |
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58 | printf("Current event mask: 0x%.8x\n", sysctl.u.tbuf_op.evt_mask); |
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59 | } |
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60 | |
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61 | sysctl.cmd = XEN_SYSCTL_tbuf_op; |
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62 | sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION; |
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63 | sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_set_evt_mask; |
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64 | sysctl.u.tbuf_op.evt_mask = XENMON; |
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65 | |
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66 | ret = xc_sysctl(xc_handle, &sysctl); |
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67 | printf("Setting mask to 0x%.8x\n", sysctl.u.tbuf_op.evt_mask); |
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68 | if ( ret != 0 ) |
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69 | { |
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70 | perror("Failure to get scheduler ID from Xen"); |
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71 | exit(1); |
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72 | } |
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73 | |
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74 | sysctl.cmd = XEN_SYSCTL_tbuf_op; |
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75 | sysctl.interface_version = XEN_SYSCTL_INTERFACE_VERSION; |
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76 | sysctl.u.tbuf_op.cmd = XEN_SYSCTL_TBUFOP_get_info; |
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77 | ret = xc_sysctl(xc_handle, &sysctl); |
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78 | if ( ret != 0 ) |
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79 | { |
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80 | perror("Failure to get event mask from Xen"); |
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81 | exit(1); |
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82 | } |
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83 | else |
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84 | { |
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85 | printf("Current event mask: 0x%.8x\n", sysctl.u.tbuf_op.evt_mask); |
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86 | } |
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87 | xc_interface_close(xc_handle); |
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88 | return 0; |
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89 | } |
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