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authorAlexander Yarygin <yarygin@linux.vnet.ibm.com>2014-07-03 10:29:07 -0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-07-16 16:57:33 -0400
commit3be8e2a0a53c3179a44a933614f6a893da0b5c19 (patch)
tree7f2ebeed37634cfcf46244e80ad1c1c90642e389 /tools/perf/arch
parent54c801ff71ba9c9ae41871e226b9d846ff9c6bab (diff)
perf kvm: Add stat support on s390
On s390, the vmexit event has a tree-like structure: between exit_event_begin and exit_event_end several other events may happen and with each of them refining the previous ones. This patch adds a decoder for such events to the generic code and also the files <asm/kvm_perf.h> and kvm-stat.c for s390. Commands 'perf kvm stat record', 'report' and 'live' are supported. Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1404397747-20939-5-git-send-email-yarygin@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
-rw-r--r--tools/perf/arch/s390/Makefile2
-rw-r--r--tools/perf/arch/s390/util/kvm-stat.c105
2 files changed, 107 insertions, 0 deletions
diff --git a/tools/perf/arch/s390/Makefile b/tools/perf/arch/s390/Makefile
index 744e629797be..798ac7379c5f 100644
--- a/tools/perf/arch/s390/Makefile
+++ b/tools/perf/arch/s390/Makefile
@@ -3,3 +3,5 @@ PERF_HAVE_DWARF_REGS := 1
3LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o 3LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
4endif 4endif
5LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o 5LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o
6HAVE_KVM_STAT_SUPPORT := 1
7LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/kvm-stat.o
diff --git a/tools/perf/arch/s390/util/kvm-stat.c b/tools/perf/arch/s390/util/kvm-stat.c
new file mode 100644
index 000000000000..a5dbc07ec9dc
--- /dev/null
+++ b/tools/perf/arch/s390/util/kvm-stat.c
@@ -0,0 +1,105 @@
1/*
2 * Arch specific functions for perf kvm stat.
3 *
4 * Copyright 2014 IBM Corp.
5 * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License (version 2 only)
9 * as published by the Free Software Foundation.
10 */
11
12#include "../../util/kvm-stat.h"
13#include <asm/kvm_perf.h>
14
15define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
16define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
17define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
18define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
19define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);
20
21static void event_icpt_insn_get_key(struct perf_evsel *evsel,
22 struct perf_sample *sample,
23 struct event_key *key)
24{
25 unsigned long insn;
26
27 insn = perf_evsel__intval(evsel, sample, "instruction");
28 key->key = icpt_insn_decoder(insn);
29 key->exit_reasons = sie_icpt_insn_codes;
30}
31
32static void event_sigp_get_key(struct perf_evsel *evsel,
33 struct perf_sample *sample,
34 struct event_key *key)
35{
36 key->key = perf_evsel__intval(evsel, sample, "order_code");
37 key->exit_reasons = sie_sigp_order_codes;
38}
39
40static void event_diag_get_key(struct perf_evsel *evsel,
41 struct perf_sample *sample,
42 struct event_key *key)
43{
44 key->key = perf_evsel__intval(evsel, sample, "code");
45 key->exit_reasons = sie_diagnose_codes;
46}
47
48static void event_icpt_prog_get_key(struct perf_evsel *evsel,
49 struct perf_sample *sample,
50 struct event_key *key)
51{
52 key->key = perf_evsel__intval(evsel, sample, "code");
53 key->exit_reasons = sie_icpt_prog_codes;
54}
55
56static struct child_event_ops child_events[] = {
57 { .name = "kvm:kvm_s390_intercept_instruction",
58 .get_key = event_icpt_insn_get_key },
59 { .name = "kvm:kvm_s390_handle_sigp",
60 .get_key = event_sigp_get_key },
61 { .name = "kvm:kvm_s390_handle_diag",
62 .get_key = event_diag_get_key },
63 { .name = "kvm:kvm_s390_intercept_prog",
64 .get_key = event_icpt_prog_get_key },
65 { NULL, NULL },
66};
67
68static struct kvm_events_ops exit_events = {
69 .is_begin_event = exit_event_begin,
70 .is_end_event = exit_event_end,
71 .child_ops = child_events,
72 .decode_key = exit_event_decode_key,
73 .name = "VM-EXIT"
74};
75
76const char * const kvm_events_tp[] = {
77 "kvm:kvm_s390_sie_enter",
78 "kvm:kvm_s390_sie_exit",
79 "kvm:kvm_s390_intercept_instruction",
80 "kvm:kvm_s390_handle_sigp",
81 "kvm:kvm_s390_handle_diag",
82 "kvm:kvm_s390_intercept_prog",
83 NULL,
84};
85
86struct kvm_reg_events_ops kvm_reg_events_ops[] = {
87 { .name = "vmexit", .ops = &exit_events },
88 { NULL, NULL },
89};
90
91const char * const kvm_skip_events[] = {
92 "Wait state",
93 NULL,
94};
95
96int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
97{
98 if (strstr(cpuid, "IBM/S390")) {
99 kvm->exit_reasons = sie_exit_reasons;
100 kvm->exit_reasons_isa = "SIE";
101 } else
102 return -ENOTSUP;
103
104 return 0;
105}
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