* [PATCH] perf kvm: add kvm-stat for arm64
@ 2020-09-14 9:17 ` Sergey Senozhatsky
0 siblings, 0 replies; 4+ messages in thread
From: Sergey Senozhatsky @ 2020-09-14 9:17 UTC (permalink / raw)
To: Peter Zijlstra
Cc: John Garry, Will Deacon, Mathieu Poirier, Leo Yan, Namhyung Kim,
Suleiman Souhlal, linux-kernel, linux-arm-kernel,
Sergey Senozhatsky
Add initial support for perf kvm stat on arm64 platform.
Example:
# perf kvm stat report
Analyze events for all VMs, all VCPUs:
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
IRQ 44110 79.55% 0.51% 0.93us 8364.85us 10.16us ( +- 8.66% )
TRAP 11337 20.45% 99.49% 1.31us 3999985.95us 7761.21us ( +- 13.23% )
Total Samples:55447, Total events handled time:88437041.52us.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
---
tools/perf/arch/arm64/Makefile | 1 +
tools/perf/arch/arm64/util/Build | 1 +
.../arch/arm64/util/arm64_exception_types.h | 22 +++++++++
tools/perf/arch/arm64/util/kvm-stat.c | 46 +++++++++++++++++++
4 files changed, 70 insertions(+)
create mode 100644 tools/perf/arch/arm64/util/arm64_exception_types.h
create mode 100644 tools/perf/arch/arm64/util/kvm-stat.c
diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile
index dbef716a1913..fab3095fb5d0 100644
--- a/tools/perf/arch/arm64/Makefile
+++ b/tools/perf/arch/arm64/Makefile
@@ -4,6 +4,7 @@ PERF_HAVE_DWARF_REGS := 1
endif
PERF_HAVE_JITDUMP := 1
PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
+HAVE_KVM_STAT_SUPPORT := 1
#
# Syscall table generation for perf
diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build
index 5c13438c7bd4..4cba12f4b741 100644
--- a/tools/perf/arch/arm64/util/Build
+++ b/tools/perf/arch/arm64/util/Build
@@ -1,6 +1,7 @@
perf-y += header.o
perf-y += machine.o
perf-y += perf_regs.o
+perf-y += kvm-stat.o
perf-$(CONFIG_DWARF) += dwarf-regs.o
perf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
diff --git a/tools/perf/arch/arm64/util/arm64_exception_types.h b/tools/perf/arch/arm64/util/arm64_exception_types.h
new file mode 100644
index 000000000000..224774ac34c2
--- /dev/null
+++ b/tools/perf/arch/arm64/util/arm64_exception_types.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef ARCH_PERF_ARM64_EXCEPTION_TYPES_H
+#define ARCH_PERF_ARM64_EXCEPTION_TYPES_H
+
+/* Per asm/virt.h */
+#define HVC_STUB_ERR 0xbadca11
+
+/* Per asm/kvm_asm.h */
+#define ARM_EXCEPTION_IRQ 0
+#define ARM_EXCEPTION_EL1_SERROR 1
+#define ARM_EXCEPTION_TRAP 2
+#define ARM_EXCEPTION_IL 3
+/* The hyp-stub will return this for any kvm_call_hyp() call */
+#define ARM_EXCEPTION_HYP_GONE HVC_STUB_ERR
+
+#define kvm_arm_exception_type \
+ {ARM_EXCEPTION_IRQ, "IRQ" }, \
+ {ARM_EXCEPTION_EL1_SERROR, "SERROR" }, \
+ {ARM_EXCEPTION_TRAP, "TRAP" }, \
+ {ARM_EXCEPTION_HYP_GONE, "HYP_GONE" }
+
+#endif /* ARCH_PERF_ARM64_EXCEPTION_TYPES_H */
diff --git a/tools/perf/arch/arm64/util/kvm-stat.c b/tools/perf/arch/arm64/util/kvm-stat.c
new file mode 100644
index 000000000000..3c642057a0fe
--- /dev/null
+++ b/tools/perf/arch/arm64/util/kvm-stat.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <errno.h>
+#include "../../util/evsel.h"
+#include "../../util/kvm-stat.h"
+#include "arm64_exception_types.h"
+#include "debug.h"
+
+define_exit_reasons_table(arm64_exit_reasons, kvm_arm_exception_type);
+
+static struct kvm_events_ops exit_events = {
+ .is_begin_event = exit_event_begin,
+ .is_end_event = exit_event_end,
+ .decode_key = exit_event_decode_key,
+ .name = "VM-EXIT"
+};
+
+const char *vcpu_id_str = "id";
+const int decode_str_len = 20;
+const char *kvm_exit_reason = "ret";
+const char *kvm_entry_trace = "kvm:kvm_entry";
+const char *kvm_exit_trace = "kvm:kvm_exit";
+
+const char *kvm_events_tp[] = {
+ "kvm:kvm_entry",
+ "kvm:kvm_exit",
+ NULL,
+};
+
+struct kvm_reg_events_ops kvm_reg_events_ops[] = {
+ {
+ .name = "vmexit",
+ .ops = &exit_events,
+ },
+ { NULL },
+};
+
+const char * const kvm_skip_events[] = {
+ NULL,
+};
+
+int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid __maybe_unused)
+{
+ kvm->exit_reasons = arm64_exit_reasons;
+ kvm->exit_reasons_isa = "arm64";
+ return 0;
+}
--
2.28.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] perf kvm: add kvm-stat for arm64
@ 2020-09-14 9:17 ` Sergey Senozhatsky
0 siblings, 0 replies; 4+ messages in thread
From: Sergey Senozhatsky @ 2020-09-14 9:17 UTC (permalink / raw)
To: Peter Zijlstra
Cc: Mathieu Poirier, John Garry, linux-kernel, Sergey Senozhatsky,
Namhyung Kim, Suleiman Souhlal, Will Deacon, Leo Yan,
linux-arm-kernel
Add initial support for perf kvm stat on arm64 platform.
Example:
# perf kvm stat report
Analyze events for all VMs, all VCPUs:
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
IRQ 44110 79.55% 0.51% 0.93us 8364.85us 10.16us ( +- 8.66% )
TRAP 11337 20.45% 99.49% 1.31us 3999985.95us 7761.21us ( +- 13.23% )
Total Samples:55447, Total events handled time:88437041.52us.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
---
tools/perf/arch/arm64/Makefile | 1 +
tools/perf/arch/arm64/util/Build | 1 +
.../arch/arm64/util/arm64_exception_types.h | 22 +++++++++
tools/perf/arch/arm64/util/kvm-stat.c | 46 +++++++++++++++++++
4 files changed, 70 insertions(+)
create mode 100644 tools/perf/arch/arm64/util/arm64_exception_types.h
create mode 100644 tools/perf/arch/arm64/util/kvm-stat.c
diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile
index dbef716a1913..fab3095fb5d0 100644
--- a/tools/perf/arch/arm64/Makefile
+++ b/tools/perf/arch/arm64/Makefile
@@ -4,6 +4,7 @@ PERF_HAVE_DWARF_REGS := 1
endif
PERF_HAVE_JITDUMP := 1
PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
+HAVE_KVM_STAT_SUPPORT := 1
#
# Syscall table generation for perf
diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build
index 5c13438c7bd4..4cba12f4b741 100644
--- a/tools/perf/arch/arm64/util/Build
+++ b/tools/perf/arch/arm64/util/Build
@@ -1,6 +1,7 @@
perf-y += header.o
perf-y += machine.o
perf-y += perf_regs.o
+perf-y += kvm-stat.o
perf-$(CONFIG_DWARF) += dwarf-regs.o
perf-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o
perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
diff --git a/tools/perf/arch/arm64/util/arm64_exception_types.h b/tools/perf/arch/arm64/util/arm64_exception_types.h
new file mode 100644
index 000000000000..224774ac34c2
--- /dev/null
+++ b/tools/perf/arch/arm64/util/arm64_exception_types.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef ARCH_PERF_ARM64_EXCEPTION_TYPES_H
+#define ARCH_PERF_ARM64_EXCEPTION_TYPES_H
+
+/* Per asm/virt.h */
+#define HVC_STUB_ERR 0xbadca11
+
+/* Per asm/kvm_asm.h */
+#define ARM_EXCEPTION_IRQ 0
+#define ARM_EXCEPTION_EL1_SERROR 1
+#define ARM_EXCEPTION_TRAP 2
+#define ARM_EXCEPTION_IL 3
+/* The hyp-stub will return this for any kvm_call_hyp() call */
+#define ARM_EXCEPTION_HYP_GONE HVC_STUB_ERR
+
+#define kvm_arm_exception_type \
+ {ARM_EXCEPTION_IRQ, "IRQ" }, \
+ {ARM_EXCEPTION_EL1_SERROR, "SERROR" }, \
+ {ARM_EXCEPTION_TRAP, "TRAP" }, \
+ {ARM_EXCEPTION_HYP_GONE, "HYP_GONE" }
+
+#endif /* ARCH_PERF_ARM64_EXCEPTION_TYPES_H */
diff --git a/tools/perf/arch/arm64/util/kvm-stat.c b/tools/perf/arch/arm64/util/kvm-stat.c
new file mode 100644
index 000000000000..3c642057a0fe
--- /dev/null
+++ b/tools/perf/arch/arm64/util/kvm-stat.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <errno.h>
+#include "../../util/evsel.h"
+#include "../../util/kvm-stat.h"
+#include "arm64_exception_types.h"
+#include "debug.h"
+
+define_exit_reasons_table(arm64_exit_reasons, kvm_arm_exception_type);
+
+static struct kvm_events_ops exit_events = {
+ .is_begin_event = exit_event_begin,
+ .is_end_event = exit_event_end,
+ .decode_key = exit_event_decode_key,
+ .name = "VM-EXIT"
+};
+
+const char *vcpu_id_str = "id";
+const int decode_str_len = 20;
+const char *kvm_exit_reason = "ret";
+const char *kvm_entry_trace = "kvm:kvm_entry";
+const char *kvm_exit_trace = "kvm:kvm_exit";
+
+const char *kvm_events_tp[] = {
+ "kvm:kvm_entry",
+ "kvm:kvm_exit",
+ NULL,
+};
+
+struct kvm_reg_events_ops kvm_reg_events_ops[] = {
+ {
+ .name = "vmexit",
+ .ops = &exit_events,
+ },
+ { NULL },
+};
+
+const char * const kvm_skip_events[] = {
+ NULL,
+};
+
+int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid __maybe_unused)
+{
+ kvm->exit_reasons = arm64_exit_reasons;
+ kvm->exit_reasons_isa = "arm64";
+ return 0;
+}
--
2.28.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] perf kvm: add kvm-stat for arm64
2020-09-14 9:17 ` Sergey Senozhatsky
@ 2020-09-15 9:01 ` Sergey Senozhatsky
-1 siblings, 0 replies; 4+ messages in thread
From: Sergey Senozhatsky @ 2020-09-15 9:01 UTC (permalink / raw)
To: Sergey Senozhatsky
Cc: Peter Zijlstra, John Garry, Will Deacon, Mathieu Poirier,
Leo Yan, Namhyung Kim, Suleiman Souhlal, linux-kernel,
linux-arm-kernel
On (20/09/14 18:17), Sergey Senozhatsky wrote:
> Add initial support for perf kvm stat on arm64 platform.
>
> Example:
> # perf kvm stat report
> Analyze events for all VMs, all VCPUs:
>
> VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
>
> IRQ 44110 79.55% 0.51% 0.93us 8364.85us 10.16us ( +- 8.66% )
> TRAP 11337 20.45% 99.49% 1.31us 3999985.95us 7761.21us ( +- 13.23% )
>
> Total Samples:55447, Total events handled time:88437041.52us.
I will submit v2 shortly.
-ss
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] perf kvm: add kvm-stat for arm64
@ 2020-09-15 9:01 ` Sergey Senozhatsky
0 siblings, 0 replies; 4+ messages in thread
From: Sergey Senozhatsky @ 2020-09-15 9:01 UTC (permalink / raw)
To: Sergey Senozhatsky
Cc: Suleiman Souhlal, Mathieu Poirier, Peter Zijlstra, John Garry,
linux-kernel, Leo Yan, Namhyung Kim, Will Deacon,
linux-arm-kernel
On (20/09/14 18:17), Sergey Senozhatsky wrote:
> Add initial support for perf kvm stat on arm64 platform.
>
> Example:
> # perf kvm stat report
> Analyze events for all VMs, all VCPUs:
>
> VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
>
> IRQ 44110 79.55% 0.51% 0.93us 8364.85us 10.16us ( +- 8.66% )
> TRAP 11337 20.45% 99.49% 1.31us 3999985.95us 7761.21us ( +- 13.23% )
>
> Total Samples:55447, Total events handled time:88437041.52us.
I will submit v2 shortly.
-ss
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 4+ messages in thread
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2020-09-14 9:17 [PATCH] perf kvm: add kvm-stat for arm64 Sergey Senozhatsky
2020-09-14 9:17 ` Sergey Senozhatsky
2020-09-15 9:01 ` Sergey Senozhatsky
2020-09-15 9:01 ` Sergey Senozhatsky
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