Adding xen plugin.

Signed-off-by: Jiri Olsa <jo...@redhat.com>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: David Ahern <dsah...@gmail.com>
---
 tools/lib/traceevent/Makefile     |   2 +-
 tools/lib/traceevent/plugin_xen.c | 132 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 133 insertions(+), 1 deletion(-)
 create mode 100644 tools/lib/traceevent/plugin_xen.c

diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index c926d09..268ac9c 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -209,7 +209,7 @@ PEVENT_LIB_OBJS = event-parse.o event-plugin.o trace-seq.o 
parse-filter.o parse-
 PEVENT_LIB_OBJS += kbuffer-parse.o
 
 PLUGIN_OBJS = plugin_jbd2.o plugin_blk.o plugin_hrtimer.o plugin_kmem.o 
plugin_kvm.o \
-       plugin_mac80211.o plugin_sched_switch.o plugin_function.o
+       plugin_mac80211.o plugin_sched_switch.o plugin_function.o plugin_xen.o
 
 PLUGINS := $(PLUGIN_OBJS:.o=.so)
 
diff --git a/tools/lib/traceevent/plugin_xen.c 
b/tools/lib/traceevent/plugin_xen.c
new file mode 100644
index 0000000..b2f689f
--- /dev/null
+++ b/tools/lib/traceevent/plugin_xen.c
@@ -0,0 +1,132 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "event-parse.h"
+
+#define __HYPERVISOR_set_trap_table        0
+#define __HYPERVISOR_mmu_update            1
+#define __HYPERVISOR_set_gdt               2
+#define __HYPERVISOR_stack_switch          3
+#define __HYPERVISOR_set_callbacks         4
+#define __HYPERVISOR_fpu_taskswitch        5
+#define __HYPERVISOR_sched_op_compat       6
+#define __HYPERVISOR_dom0_op               7
+#define __HYPERVISOR_set_debugreg          8
+#define __HYPERVISOR_get_debugreg          9
+#define __HYPERVISOR_update_descriptor    10
+#define __HYPERVISOR_memory_op            12
+#define __HYPERVISOR_multicall            13
+#define __HYPERVISOR_update_va_mapping    14
+#define __HYPERVISOR_set_timer_op         15
+#define __HYPERVISOR_event_channel_op_compat 16
+#define __HYPERVISOR_xen_version          17
+#define __HYPERVISOR_console_io           18
+#define __HYPERVISOR_physdev_op_compat    19
+#define __HYPERVISOR_grant_table_op       20
+#define __HYPERVISOR_vm_assist            21
+#define __HYPERVISOR_update_va_mapping_otherdomain 22
+#define __HYPERVISOR_iret                 23 /* x86 only */
+#define __HYPERVISOR_vcpu_op              24
+#define __HYPERVISOR_set_segment_base     25 /* x86/64 only */
+#define __HYPERVISOR_mmuext_op            26
+#define __HYPERVISOR_acm_op               27
+#define __HYPERVISOR_nmi_op               28
+#define __HYPERVISOR_sched_op             29
+#define __HYPERVISOR_callback_op          30
+#define __HYPERVISOR_xenoprof_op          31
+#define __HYPERVISOR_event_channel_op     32
+#define __HYPERVISOR_physdev_op           33
+#define __HYPERVISOR_hvm_op               34
+#define __HYPERVISOR_tmem_op              38
+
+/* Architecture-specific hypercall definitions. */
+#define __HYPERVISOR_arch_0               48
+#define __HYPERVISOR_arch_1               49
+#define __HYPERVISOR_arch_2               50
+#define __HYPERVISOR_arch_3               51
+#define __HYPERVISOR_arch_4               52
+#define __HYPERVISOR_arch_5               53
+#define __HYPERVISOR_arch_6               54
+#define __HYPERVISOR_arch_7               55
+
+#define N(x)   [__HYPERVISOR_##x] = "("#x")"
+static const char *xen_hypercall_names[] = {
+       N(set_trap_table),
+       N(mmu_update),
+       N(set_gdt),
+       N(stack_switch),
+       N(set_callbacks),
+       N(fpu_taskswitch),
+       N(sched_op_compat),
+       N(dom0_op),
+       N(set_debugreg),
+       N(get_debugreg),
+       N(update_descriptor),
+       N(memory_op),
+       N(multicall),
+       N(update_va_mapping),
+       N(set_timer_op),
+       N(event_channel_op_compat),
+       N(xen_version),
+       N(console_io),
+       N(physdev_op_compat),
+       N(grant_table_op),
+       N(vm_assist),
+       N(update_va_mapping_otherdomain),
+       N(iret),
+       N(vcpu_op),
+       N(set_segment_base),
+       N(mmuext_op),
+       N(acm_op),
+       N(nmi_op),
+       N(sched_op),
+       N(callback_op),
+       N(xenoprof_op),
+       N(event_channel_op),
+       N(physdev_op),
+       N(hvm_op),
+
+/* Architecture-specific hypercall definitions. */
+       N(arch_0),
+       N(arch_1),
+       N(arch_2),
+       N(arch_3),
+       N(arch_4),
+       N(arch_5),
+       N(arch_6),
+       N(arch_7),
+};
+#undef N
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+static const char *xen_hypercall_name(unsigned op)
+{
+       if (op < ARRAY_SIZE(xen_hypercall_names) &&
+           xen_hypercall_names[op] != NULL)
+               return xen_hypercall_names[op];
+
+       return "";
+}
+
+unsigned long long process_xen_hypercall_name(struct trace_seq *s,
+                                             unsigned long long *args)
+{
+       unsigned int op = args[0];
+
+       trace_seq_printf(s, "%s", xen_hypercall_name(op));
+
+       return 0;
+}
+
+int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
+{
+       pevent_register_print_function(pevent,
+                                      process_xen_hypercall_name,
+                                      PEVENT_FUNC_ARG_STRING,
+                                      "xen_hypercall_name",
+                                      PEVENT_FUNC_ARG_INT,
+                                      PEVENT_FUNC_ARG_VOID);
+
+       return 0;
+}
-- 
1.7.11.7

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