tools/lib/traceevent/plugin_xen.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include "event-parse.h"
   6
   7 #define __HYPERVISOR_set_trap_table                     0
   8 #define __HYPERVISOR_mmu_update                         1
   9 #define __HYPERVISOR_set_gdt                            2
  10 #define __HYPERVISOR_stack_switch                       3
  11 #define __HYPERVISOR_set_callbacks                      4
  12 #define __HYPERVISOR_fpu_taskswitch                     5
  13 #define __HYPERVISOR_sched_op_compat                    6
  14 #define __HYPERVISOR_dom0_op                            7
  15 #define __HYPERVISOR_set_debugreg                       8
  16 #define __HYPERVISOR_get_debugreg                       9
  17 #define __HYPERVISOR_update_descriptor                  10
  18 #define __HYPERVISOR_memory_op                          12
  19 #define __HYPERVISOR_multicall                          13
  20 #define __HYPERVISOR_update_va_mapping                  14
  21 #define __HYPERVISOR_set_timer_op                       15
  22 #define __HYPERVISOR_event_channel_op_compat            16
  23 #define __HYPERVISOR_xen_version                        17
  24 #define __HYPERVISOR_console_io                         18
  25 #define __HYPERVISOR_physdev_op_compat                  19
  26 #define __HYPERVISOR_grant_table_op                     20
  27 #define __HYPERVISOR_vm_assist                          21
  28 #define __HYPERVISOR_update_va_mapping_otherdomain      22
  29 #define __HYPERVISOR_iret                               23 /* x86 only */
  30 #define __HYPERVISOR_vcpu_op                            24
  31 #define __HYPERVISOR_set_segment_base                   25 /* x86/64 only */
  32 #define __HYPERVISOR_mmuext_op                          26
  33 #define __HYPERVISOR_acm_op                             27
  34 #define __HYPERVISOR_nmi_op                             28
  35 #define __HYPERVISOR_sched_op                           29
  36 #define __HYPERVISOR_callback_op                        30
  37 #define __HYPERVISOR_xenoprof_op                        31
  38 #define __HYPERVISOR_event_channel_op                   32
  39 #define __HYPERVISOR_physdev_op                         33
  40 #define __HYPERVISOR_hvm_op                             34
  41 #define __HYPERVISOR_tmem_op                            38
  42
  43 /* Architecture-specific hypercall definitions. */
  44 #define __HYPERVISOR_arch_0                             48
  45 #define __HYPERVISOR_arch_1                             49
  46 #define __HYPERVISOR_arch_2                             50
  47 #define __HYPERVISOR_arch_3                             51
  48 #define __HYPERVISOR_arch_4                             52
  49 #define __HYPERVISOR_arch_5                             53
  50 #define __HYPERVISOR_arch_6                             54
  51 #define __HYPERVISOR_arch_7                             55
  52
  53 #define N(x)    [__HYPERVISOR_##x] = "("#x")"
  54 static const char *xen_hypercall_names[] = {
  55         N(set_trap_table),
  56         N(mmu_update),
  57         N(set_gdt),
  58         N(stack_switch),
  59         N(set_callbacks),
  60         N(fpu_taskswitch),
  61         N(sched_op_compat),
  62         N(dom0_op),
  63         N(set_debugreg),
  64         N(get_debugreg),
  65         N(update_descriptor),
  66         N(memory_op),
  67         N(multicall),
  68         N(update_va_mapping),
  69         N(set_timer_op),
  70         N(event_channel_op_compat),
  71         N(xen_version),
  72         N(console_io),
  73         N(physdev_op_compat),
  74         N(grant_table_op),
  75         N(vm_assist),
  76         N(update_va_mapping_otherdomain),
  77         N(iret),
  78         N(vcpu_op),
  79         N(set_segment_base),
  80         N(mmuext_op),
  81         N(acm_op),
  82         N(nmi_op),
  83         N(sched_op),
  84         N(callback_op),
  85         N(xenoprof_op),
  86         N(event_channel_op),
  87         N(physdev_op),
  88         N(hvm_op),
  89
  90 /* Architecture-specific hypercall definitions. */
  91         N(arch_0),
  92         N(arch_1),
  93         N(arch_2),
  94         N(arch_3),
  95         N(arch_4),
  96         N(arch_5),
  97         N(arch_6),
  98         N(arch_7),
  99 };
 100 #undef N
 101
 102 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 103
 104 static const char *xen_hypercall_name(unsigned op)
 105 {
 106         if (op < ARRAY_SIZE(xen_hypercall_names) &&
 107             xen_hypercall_names[op] != NULL)
 108                 return xen_hypercall_names[op];
 109
 110         return "";
 111 }
 112
 113 unsigned long long process_xen_hypercall_name(struct trace_seq *s,
 114                                               unsigned long long *args)
 115 {
 116         unsigned int op = args[0];
 117
 118         trace_seq_printf(s, "%s", xen_hypercall_name(op));
 119         return 0;
 120 }
 121
 122 int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
 123 {
 124         pevent_register_print_function(pevent,
 125                                        process_xen_hypercall_name,
 126                                        PEVENT_FUNC_ARG_STRING,
 127                                        "xen_hypercall_name",
 128                                        PEVENT_FUNC_ARG_INT,
 129                                        PEVENT_FUNC_ARG_VOID);
 130         return 0;
 131 }
 132
 133 void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
 134 {
 135         pevent_unregister_print_function(pevent, process_xen_hypercall_name,
 136                                          "xen_hypercall_name");
 137 }