From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> To: Peter Zijlstra <peterz@infradead.org> Cc: John Garry <john.garry@huawei.com>, Will Deacon <will@kernel.org>, Mathieu Poirier <mathieu.poirier@linaro.org>, Leo Yan <leo.yan@linaro.org>, Namhyung Kim <namhyung@kernel.org>, Suleiman Souhlal <suleiman@google.com>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Subject: [PATCH] perf kvm: add kvm-stat for arm64 Date: Mon, 14 Sep 2020 18:17:13 +0900 [thread overview] Message-ID: <20200914091713.1485250-1-sergey.senozhatsky@gmail.com> (raw) 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
WARNING: multiple messages have this Message-ID (diff)
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> To: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>, John Garry <john.garry@huawei.com>, linux-kernel@vger.kernel.org, Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, Namhyung Kim <namhyung@kernel.org>, Suleiman Souhlal <suleiman@google.com>, Will Deacon <will@kernel.org>, Leo Yan <leo.yan@linaro.org>, linux-arm-kernel@lists.infradead.org Subject: [PATCH] perf kvm: add kvm-stat for arm64 Date: Mon, 14 Sep 2020 18:17:13 +0900 [thread overview] Message-ID: <20200914091713.1485250-1-sergey.senozhatsky@gmail.com> (raw) 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
next reply other threads:[~2020-09-14 9:17 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-14 9:17 Sergey Senozhatsky [this message] 2020-09-14 9:17 ` [PATCH] perf kvm: add kvm-stat for arm64 Sergey Senozhatsky 2020-09-15 9:01 ` Sergey Senozhatsky 2020-09-15 9:01 ` Sergey Senozhatsky
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