bf6b3a95ff
The function handler should be unregistered when the plugin is unloaded otherwise it'll try to access invalid memory. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1389839478-5887-13-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "event-parse.h"
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#define __HYPERVISOR_set_trap_table 0
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#define __HYPERVISOR_mmu_update 1
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#define __HYPERVISOR_set_gdt 2
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#define __HYPERVISOR_stack_switch 3
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#define __HYPERVISOR_set_callbacks 4
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#define __HYPERVISOR_fpu_taskswitch 5
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#define __HYPERVISOR_sched_op_compat 6
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#define __HYPERVISOR_dom0_op 7
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#define __HYPERVISOR_set_debugreg 8
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#define __HYPERVISOR_get_debugreg 9
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#define __HYPERVISOR_update_descriptor 10
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#define __HYPERVISOR_memory_op 12
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#define __HYPERVISOR_multicall 13
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#define __HYPERVISOR_update_va_mapping 14
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#define __HYPERVISOR_set_timer_op 15
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#define __HYPERVISOR_event_channel_op_compat 16
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#define __HYPERVISOR_xen_version 17
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#define __HYPERVISOR_console_io 18
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#define __HYPERVISOR_physdev_op_compat 19
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#define __HYPERVISOR_grant_table_op 20
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#define __HYPERVISOR_vm_assist 21
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#define __HYPERVISOR_update_va_mapping_otherdomain 22
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#define __HYPERVISOR_iret 23 /* x86 only */
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#define __HYPERVISOR_vcpu_op 24
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#define __HYPERVISOR_set_segment_base 25 /* x86/64 only */
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#define __HYPERVISOR_mmuext_op 26
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#define __HYPERVISOR_acm_op 27
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#define __HYPERVISOR_nmi_op 28
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#define __HYPERVISOR_sched_op 29
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#define __HYPERVISOR_callback_op 30
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#define __HYPERVISOR_xenoprof_op 31
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#define __HYPERVISOR_event_channel_op 32
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#define __HYPERVISOR_physdev_op 33
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#define __HYPERVISOR_hvm_op 34
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#define __HYPERVISOR_tmem_op 38
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/* Architecture-specific hypercall definitions. */
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#define __HYPERVISOR_arch_0 48
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#define __HYPERVISOR_arch_1 49
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#define __HYPERVISOR_arch_2 50
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#define __HYPERVISOR_arch_3 51
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#define __HYPERVISOR_arch_4 52
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#define __HYPERVISOR_arch_5 53
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#define __HYPERVISOR_arch_6 54
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#define __HYPERVISOR_arch_7 55
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#define N(x) [__HYPERVISOR_##x] = "("#x")"
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static const char *xen_hypercall_names[] = {
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N(set_trap_table),
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N(mmu_update),
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N(set_gdt),
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N(stack_switch),
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N(set_callbacks),
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N(fpu_taskswitch),
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N(sched_op_compat),
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N(dom0_op),
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N(set_debugreg),
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N(get_debugreg),
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N(update_descriptor),
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N(memory_op),
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N(multicall),
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N(update_va_mapping),
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N(set_timer_op),
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N(event_channel_op_compat),
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N(xen_version),
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N(console_io),
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N(physdev_op_compat),
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N(grant_table_op),
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N(vm_assist),
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N(update_va_mapping_otherdomain),
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N(iret),
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N(vcpu_op),
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N(set_segment_base),
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N(mmuext_op),
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N(acm_op),
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N(nmi_op),
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N(sched_op),
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N(callback_op),
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N(xenoprof_op),
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N(event_channel_op),
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N(physdev_op),
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N(hvm_op),
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/* Architecture-specific hypercall definitions. */
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N(arch_0),
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N(arch_1),
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N(arch_2),
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N(arch_3),
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N(arch_4),
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N(arch_5),
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N(arch_6),
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N(arch_7),
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};
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#undef N
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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static const char *xen_hypercall_name(unsigned op)
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{
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if (op < ARRAY_SIZE(xen_hypercall_names) &&
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xen_hypercall_names[op] != NULL)
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return xen_hypercall_names[op];
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return "";
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}
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unsigned long long process_xen_hypercall_name(struct trace_seq *s,
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unsigned long long *args)
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{
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unsigned int op = args[0];
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trace_seq_printf(s, "%s", xen_hypercall_name(op));
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return 0;
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}
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int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
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{
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pevent_register_print_function(pevent,
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process_xen_hypercall_name,
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PEVENT_FUNC_ARG_STRING,
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"xen_hypercall_name",
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PEVENT_FUNC_ARG_INT,
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PEVENT_FUNC_ARG_VOID);
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return 0;
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}
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void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
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{
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pevent_unregister_print_function(pevent, process_xen_hypercall_name,
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"xen_hypercall_name");
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}
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