Hello!
This patchset enables "perf kvm stat record/report" on powerpc,
which can be used to analyze certain KVM events : KVM exits and
hypervisor calls. The statistics can be shown individually for
each running VM in the host and hence, can be useful in giving
an idea of the performance of a VM on a certain workload.
Example usages are shown in each of the patches individually.
Here is a sample output :
Analyze events for pid(s) 60515, all VCPUs:
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
H_DATA_STORAGE 5006 35.30% 0.13% 1.94us 49.46us 12.37us ( +- 0.52% )
HV_DECREMENTER 4457 31.43% 0.02% 0.72us 16.14us 1.91us ( +- 0.96% )
SYSCALL 2690 18.97% 0.10% 2.84us 528.24us 18.29us ( +- 3.75% )
RETURN_TO_HOST 1789 12.61% 99.76% 1.58us 672791.91us 27470.23us ( +- 3.00% )
EXTERNAL 240 1.69% 0.00% 0.69us 10.67us 1.33us ( +- 5.34% )
Total Samples:14182, Total events handled time:49264158.30us.
The above example shows how many number of kvm exits have happened
during a certain period of time. Along with the total number of exits,
it also groups all the exits based on their reasons. Frequency for
individual exit reasons is also shown.
This patchset makes use of kvm_hv tracepoints and enables "perf kvm
stat record" to trace on them. After recording, "perf kvm stat report"
does all the post processing of parsing the events captured and
classifying them according to their exit reasons (which are already
availabe in "trace_book3s.h"). Similar method is used with hcall
analysis.
Thanks,
Hemant Kumar
To analyze the kvm exits with perf, we will need to map the exit codes
with the exit reasons. Such a mapping exists today in
trace_book3s.h. But its not exported to tools like perf.
This patch moves these kvm exit reasons and their mapping from
"arch/powerpc/kvm/trace_book3s.h" to
"arch/powerpc/include/uapi/asm/trace_book3s.h".
We will also need to change the path of "trace_book3s.h" included in files
"trace_hv.h" and "trace_pr.h".
Signed-off-by: Hemant Kumar <[email protected]>
---
arch/powerpc/include/uapi/asm/trace_book3s.h | 32 ++++++++++++++++++++++++++++
arch/powerpc/kvm/trace_book3s.h | 32 ----------------------------
arch/powerpc/kvm/trace_hv.h | 2 +-
arch/powerpc/kvm/trace_pr.h | 2 +-
4 files changed, 34 insertions(+), 34 deletions(-)
create mode 100644 arch/powerpc/include/uapi/asm/trace_book3s.h
delete mode 100644 arch/powerpc/kvm/trace_book3s.h
diff --git a/arch/powerpc/include/uapi/asm/trace_book3s.h b/arch/powerpc/include/uapi/asm/trace_book3s.h
new file mode 100644
index 0000000..f647ce0
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/trace_book3s.h
@@ -0,0 +1,32 @@
+#if !defined(_TRACE_KVM_BOOK3S_H)
+#define _TRACE_KVM_BOOK3S_H
+
+/*
+ * Common defines used by the trace macros in trace_pr.h and trace_hv.h
+ */
+
+#define kvm_trace_symbol_exit \
+ {0x100, "SYSTEM_RESET"}, \
+ {0x200, "MACHINE_CHECK"}, \
+ {0x300, "DATA_STORAGE"}, \
+ {0x380, "DATA_SEGMENT"}, \
+ {0x400, "INST_STORAGE"}, \
+ {0x480, "INST_SEGMENT"}, \
+ {0x500, "EXTERNAL"}, \
+ {0x501, "EXTERNAL_LEVEL"}, \
+ {0x502, "EXTERNAL_HV"}, \
+ {0x600, "ALIGNMENT"}, \
+ {0x700, "PROGRAM"}, \
+ {0x800, "FP_UNAVAIL"}, \
+ {0x900, "DECREMENTER"}, \
+ {0x980, "HV_DECREMENTER"}, \
+ {0xc00, "SYSCALL"}, \
+ {0xd00, "TRACE"}, \
+ {0xe00, "H_DATA_STORAGE"}, \
+ {0xe20, "H_INST_STORAGE"}, \
+ {0xe40, "H_EMUL_ASSIST"}, \
+ {0xf00, "PERFMON"}, \
+ {0xf20, "ALTIVEC"}, \
+ {0xf40, "VSX"}
+
+#endif
diff --git a/arch/powerpc/kvm/trace_book3s.h b/arch/powerpc/kvm/trace_book3s.h
deleted file mode 100644
index f647ce0..0000000
--- a/arch/powerpc/kvm/trace_book3s.h
+++ /dev/null
@@ -1,32 +0,0 @@
-#if !defined(_TRACE_KVM_BOOK3S_H)
-#define _TRACE_KVM_BOOK3S_H
-
-/*
- * Common defines used by the trace macros in trace_pr.h and trace_hv.h
- */
-
-#define kvm_trace_symbol_exit \
- {0x100, "SYSTEM_RESET"}, \
- {0x200, "MACHINE_CHECK"}, \
- {0x300, "DATA_STORAGE"}, \
- {0x380, "DATA_SEGMENT"}, \
- {0x400, "INST_STORAGE"}, \
- {0x480, "INST_SEGMENT"}, \
- {0x500, "EXTERNAL"}, \
- {0x501, "EXTERNAL_LEVEL"}, \
- {0x502, "EXTERNAL_HV"}, \
- {0x600, "ALIGNMENT"}, \
- {0x700, "PROGRAM"}, \
- {0x800, "FP_UNAVAIL"}, \
- {0x900, "DECREMENTER"}, \
- {0x980, "HV_DECREMENTER"}, \
- {0xc00, "SYSCALL"}, \
- {0xd00, "TRACE"}, \
- {0xe00, "H_DATA_STORAGE"}, \
- {0xe20, "H_INST_STORAGE"}, \
- {0xe40, "H_EMUL_ASSIST"}, \
- {0xf00, "PERFMON"}, \
- {0xf20, "ALTIVEC"}, \
- {0xf40, "VSX"}
-
-#endif
diff --git a/arch/powerpc/kvm/trace_hv.h b/arch/powerpc/kvm/trace_hv.h
index 33d9daf..02d0a07 100644
--- a/arch/powerpc/kvm/trace_hv.h
+++ b/arch/powerpc/kvm/trace_hv.h
@@ -2,7 +2,7 @@
#define _TRACE_KVM_HV_H
#include <linux/tracepoint.h>
-#include "trace_book3s.h"
+#include <uapi/asm/trace_book3s.h>
#include <asm/hvcall.h>
#include <asm/kvm_asm.h>
diff --git a/arch/powerpc/kvm/trace_pr.h b/arch/powerpc/kvm/trace_pr.h
index 810507c..a9850c6 100644
--- a/arch/powerpc/kvm/trace_pr.h
+++ b/arch/powerpc/kvm/trace_pr.h
@@ -3,7 +3,7 @@
#define _TRACE_KVM_PR_H
#include <linux/tracepoint.h>
-#include "trace_book3s.h"
+#include <uapi/asm/trace_book3s.h>
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm_pr
--
1.9.3
This patch adds an exit reason "RETURN_TO_HOST" for the return code
0x0.
Signed-off-by: Hemant Kumar <[email protected]>
---
arch/powerpc/include/uapi/asm/trace_book3s.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/include/uapi/asm/trace_book3s.h b/arch/powerpc/include/uapi/asm/trace_book3s.h
index f647ce0..8635005 100644
--- a/arch/powerpc/include/uapi/asm/trace_book3s.h
+++ b/arch/powerpc/include/uapi/asm/trace_book3s.h
@@ -6,6 +6,7 @@
*/
#define kvm_trace_symbol_exit \
+ {0x0, "RETURN_TO_HOST"}, \
{0x100, "SYSTEM_RESET"}, \
{0x200, "MACHINE_CHECK"}, \
{0x300, "DATA_STORAGE"}, \
--
1.9.3
From: Srikar Dronamraju <[email protected]>
This patch adds KVM exit event analysis support to perf for powerpc.
- Trace KVM events :
perf kvm stat record
If many guests are running, we can track for a specific guest by using
--pid as in : perf kvm stat record --pid <pid>
- Show the results :
perf kvm stat report
The results show the number of exits (from the guest context to
host/hypervisor context) grouped into their respective exit reasons with
their frequency.
This patch makes use of the guest exit reasons available in
"trace_book3s.h". It records on two already available tracepoints :
"kvm_hv:kvm_guest_exit" and "kvm_hv:kvm_guest_enter".
Here is a sample o/p:
# pgrep qemu
19378
60515
2 Guests are running on the host.
# perf kvm stat record -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 4.153 MB perf.data.guest (39624 samples) ]
# perf kvm stat report -p 60515
Analyze events for pid(s) 60515, all VCPUs:
VM-EXIT Samples Samples% Time% Min Time Max Time Avg time
H_DATA_STORAGE 5006 35.30% 0.13% 1.94us 49.46us 12.37us ( +- 0.52% )
HV_DECREMENTER 4457 31.43% 0.02% 0.72us 16.14us 1.91us ( +- 0.96% )
SYSCALL 2690 18.97% 0.10% 2.84us 528.24us 18.29us ( +- 3.75% )
RETURN_TO_HOST 1789 12.61% 99.76% 1.58us 672791.91us 27470.23us ( +- 3.00% )
EXTERNAL 240 1.69% 0.00% 0.69us 10.67us 1.33us ( +- 5.34% )
Total Samples:14182, Total events handled time:49264158.30us.
Signed-off-by: Srikar Dronamraju <[email protected]>
Signed-off-by: Hemant Kumar <[email protected]>
---
arch/powerpc/include/uapi/asm/kvm_perf.h | 15 +++++++++++++++
tools/perf/arch/powerpc/Makefile | 1 +
tools/perf/arch/powerpc/util/Build | 1 +
tools/perf/arch/powerpc/util/kvm-stat.c | 33 ++++++++++++++++++++++++++++++++
4 files changed, 50 insertions(+)
create mode 100644 arch/powerpc/include/uapi/asm/kvm_perf.h
create mode 100644 tools/perf/arch/powerpc/util/kvm-stat.c
diff --git a/arch/powerpc/include/uapi/asm/kvm_perf.h b/arch/powerpc/include/uapi/asm/kvm_perf.h
new file mode 100644
index 0000000..30fa670
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/kvm_perf.h
@@ -0,0 +1,15 @@
+#ifndef _ASM_POWERPC_KVM_PERF_H
+#define _ASM_POWERPC_KVM_PERF_H
+
+#include <asm/trace_book3s.h>
+#include <asm/kvm.h>
+
+#define DECODE_STR_LEN 20
+
+#define VCPU_ID "vcpu_id"
+
+#define KVM_ENTRY_TRACE "kvm_hv:kvm_guest_enter"
+#define KVM_EXIT_TRACE "kvm_hv:kvm_guest_exit"
+#define KVM_EXIT_REASON "trap"
+
+#endif /* _ASM_POWERPC_KVM_PERF_H */
diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch/powerpc/Makefile
index 7fbca17..21322e0 100644
--- a/tools/perf/arch/powerpc/Makefile
+++ b/tools/perf/arch/powerpc/Makefile
@@ -1,3 +1,4 @@
ifndef NO_DWARF
PERF_HAVE_DWARF_REGS := 1
endif
+HAVE_KVM_STAT_SUPPORT := 1
diff --git a/tools/perf/arch/powerpc/util/Build b/tools/perf/arch/powerpc/util/Build
index 0af6e9b..dd47b5e 100644
--- a/tools/perf/arch/powerpc/util/Build
+++ b/tools/perf/arch/powerpc/util/Build
@@ -1,4 +1,5 @@
libperf-y += header.o
+libperf-y += kvm-stat.o
libperf-$(CONFIG_DWARF) += dwarf-regs.o
libperf-$(CONFIG_DWARF) += skip-callchain-idx.o
diff --git a/tools/perf/arch/powerpc/util/kvm-stat.c b/tools/perf/arch/powerpc/util/kvm-stat.c
new file mode 100644
index 0000000..62cdcc1
--- /dev/null
+++ b/tools/perf/arch/powerpc/util/kvm-stat.c
@@ -0,0 +1,33 @@
+#include "../../util/kvm-stat.h"
+#include <asm/kvm_perf.h>
+
+define_exit_reasons_table(hv_exit_reasons, kvm_trace_symbol_exit);
+
+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 *const kvm_events_tp[] = {
+ "kvm_hv:kvm_guest_exit",
+ "kvm_hv:kvm_guest_enter",
+ NULL,
+};
+
+struct kvm_reg_events_ops kvm_reg_events_ops[] = {
+ { .name = "vmexit", .ops = &exit_events },
+ { NULL, 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 = hv_exit_reasons;
+ kvm->exit_reasons_isa = "HV";
+ return 0;
+}
--
1.9.3
For tools like perf to analyze the KVM events like hcalls, we need the
hypervisor calls and their codes to be exported through uapi.
This patch moves most of the pSeries hcall codes from
arch/powerpc/include/asm/hvcall.h to
arch/powerpc/include/uapi/asm/hcall_codes.h.
It also moves the mapping <hcall_code-to-hcall_reason> from
arch/powerpc/kvm/trace_hv.h to
arch/powerpc/include/uapi/asm/trace_hcall.h.
Signed-off-by: Hemant Kumar <[email protected]>
---
arch/powerpc/include/asm/hvcall.h | 120 +--------------------------
arch/powerpc/include/uapi/asm/hcall_codes.h | 123 ++++++++++++++++++++++++++++
arch/powerpc/include/uapi/asm/trace_hcall.h | 122 +++++++++++++++++++++++++++
arch/powerpc/kvm/trace_hv.h | 117 +-------------------------
4 files changed, 248 insertions(+), 234 deletions(-)
create mode 100644 arch/powerpc/include/uapi/asm/hcall_codes.h
create mode 100644 arch/powerpc/include/uapi/asm/trace_hcall.h
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index 85bc8c0..799677d 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -155,124 +155,8 @@
/* Each control block has to be on a 4K boundary */
#define H_CB_ALIGNMENT 4096
-/* pSeries hypervisor opcodes */
-#define H_REMOVE 0x04
-#define H_ENTER 0x08
-#define H_READ 0x0c
-#define H_CLEAR_MOD 0x10
-#define H_CLEAR_REF 0x14
-#define H_PROTECT 0x18
-#define H_GET_TCE 0x1c
-#define H_PUT_TCE 0x20
-#define H_SET_SPRG0 0x24
-#define H_SET_DABR 0x28
-#define H_PAGE_INIT 0x2c
-#define H_SET_ASR 0x30
-#define H_ASR_ON 0x34
-#define H_ASR_OFF 0x38
-#define H_LOGICAL_CI_LOAD 0x3c
-#define H_LOGICAL_CI_STORE 0x40
-#define H_LOGICAL_CACHE_LOAD 0x44
-#define H_LOGICAL_CACHE_STORE 0x48
-#define H_LOGICAL_ICBI 0x4c
-#define H_LOGICAL_DCBF 0x50
-#define H_GET_TERM_CHAR 0x54
-#define H_PUT_TERM_CHAR 0x58
-#define H_REAL_TO_LOGICAL 0x5c
-#define H_HYPERVISOR_DATA 0x60
-#define H_EOI 0x64
-#define H_CPPR 0x68
-#define H_IPI 0x6c
-#define H_IPOLL 0x70
-#define H_XIRR 0x74
-#define H_PERFMON 0x7c
-#define H_MIGRATE_DMA 0x78
-#define H_REGISTER_VPA 0xDC
-#define H_CEDE 0xE0
-#define H_CONFER 0xE4
-#define H_PROD 0xE8
-#define H_GET_PPP 0xEC
-#define H_SET_PPP 0xF0
-#define H_PURR 0xF4
-#define H_PIC 0xF8
-#define H_REG_CRQ 0xFC
-#define H_FREE_CRQ 0x100
-#define H_VIO_SIGNAL 0x104
-#define H_SEND_CRQ 0x108
-#define H_COPY_RDMA 0x110
-#define H_REGISTER_LOGICAL_LAN 0x114
-#define H_FREE_LOGICAL_LAN 0x118
-#define H_ADD_LOGICAL_LAN_BUFFER 0x11C
-#define H_SEND_LOGICAL_LAN 0x120
-#define H_BULK_REMOVE 0x124
-#define H_MULTICAST_CTRL 0x130
-#define H_SET_XDABR 0x134
-#define H_STUFF_TCE 0x138
-#define H_PUT_TCE_INDIRECT 0x13C
-#define H_CHANGE_LOGICAL_LAN_MAC 0x14C
-#define H_VTERM_PARTNER_INFO 0x150
-#define H_REGISTER_VTERM 0x154
-#define H_FREE_VTERM 0x158
-#define H_RESET_EVENTS 0x15C
-#define H_ALLOC_RESOURCE 0x160
-#define H_FREE_RESOURCE 0x164
-#define H_MODIFY_QP 0x168
-#define H_QUERY_QP 0x16C
-#define H_REREGISTER_PMR 0x170
-#define H_REGISTER_SMR 0x174
-#define H_QUERY_MR 0x178
-#define H_QUERY_MW 0x17C
-#define H_QUERY_HCA 0x180
-#define H_QUERY_PORT 0x184
-#define H_MODIFY_PORT 0x188
-#define H_DEFINE_AQP1 0x18C
-#define H_GET_TRACE_BUFFER 0x190
-#define H_DEFINE_AQP0 0x194
-#define H_RESIZE_MR 0x198
-#define H_ATTACH_MCQP 0x19C
-#define H_DETACH_MCQP 0x1A0
-#define H_CREATE_RPT 0x1A4
-#define H_REMOVE_RPT 0x1A8
-#define H_REGISTER_RPAGES 0x1AC
-#define H_DISABLE_AND_GETC 0x1B0
-#define H_ERROR_DATA 0x1B4
-#define H_GET_HCA_INFO 0x1B8
-#define H_GET_PERF_COUNT 0x1BC
-#define H_MANAGE_TRACE 0x1C0
-#define H_FREE_LOGICAL_LAN_BUFFER 0x1D4
-#define H_QUERY_INT_STATE 0x1E4
-#define H_POLL_PENDING 0x1D8
-#define H_ILLAN_ATTRIBUTES 0x244
-#define H_MODIFY_HEA_QP 0x250
-#define H_QUERY_HEA_QP 0x254
-#define H_QUERY_HEA 0x258
-#define H_QUERY_HEA_PORT 0x25C
-#define H_MODIFY_HEA_PORT 0x260
-#define H_REG_BCMC 0x264
-#define H_DEREG_BCMC 0x268
-#define H_REGISTER_HEA_RPAGES 0x26C
-#define H_DISABLE_AND_GET_HEA 0x270
-#define H_GET_HEA_INFO 0x274
-#define H_ALLOC_HEA_RESOURCE 0x278
-#define H_ADD_CONN 0x284
-#define H_DEL_CONN 0x288
-#define H_JOIN 0x298
-#define H_VASI_STATE 0x2A4
-#define H_ENABLE_CRQ 0x2B0
-#define H_GET_EM_PARMS 0x2B8
-#define H_SET_MPP 0x2D0
-#define H_GET_MPP 0x2D4
-#define H_HOME_NODE_ASSOCIATIVITY 0x2EC
-#define H_BEST_ENERGY 0x2F4
-#define H_XIRR_X 0x2FC
-#define H_RANDOM 0x300
-#define H_COP 0x304
-#define H_GET_MPP_X 0x314
-#define H_SET_MODE 0x31C
-#define MAX_HCALL_OPCODE H_SET_MODE
-
-/* Platform specific hcalls, used by KVM */
-#define H_RTAS 0xf000
+/* Include pSeries hypervisor opcodes */
+#include <uapi/asm/hcall_codes.h>
/* "Platform specific hcalls", provided by PHYP */
#define H_GET_24X7_CATALOG_PAGE 0xF078
diff --git a/arch/powerpc/include/uapi/asm/hcall_codes.h b/arch/powerpc/include/uapi/asm/hcall_codes.h
new file mode 100644
index 0000000..59a3761
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/hcall_codes.h
@@ -0,0 +1,123 @@
+#ifndef _ASM_POWERPC_HVCALL_CODES_H
+#define _ASM_POWERPC_HVCALL_CODES_H
+
+/* pSeries hypervisor opcodes */
+#define H_REMOVE 0x04
+#define H_ENTER 0x08
+#define H_READ 0x0c
+#define H_CLEAR_MOD 0x10
+#define H_CLEAR_REF 0x14
+#define H_PROTECT 0x18
+#define H_GET_TCE 0x1c
+#define H_PUT_TCE 0x20
+#define H_SET_SPRG0 0x24
+#define H_SET_DABR 0x28
+#define H_PAGE_INIT 0x2c
+#define H_SET_ASR 0x30
+#define H_ASR_ON 0x34
+#define H_ASR_OFF 0x38
+#define H_LOGICAL_CI_LOAD 0x3c
+#define H_LOGICAL_CI_STORE 0x40
+#define H_LOGICAL_CACHE_LOAD 0x44
+#define H_LOGICAL_CACHE_STORE 0x48
+#define H_LOGICAL_ICBI 0x4c
+#define H_LOGICAL_DCBF 0x50
+#define H_GET_TERM_CHAR 0x54
+#define H_PUT_TERM_CHAR 0x58
+#define H_REAL_TO_LOGICAL 0x5c
+#define H_HYPERVISOR_DATA 0x60
+#define H_EOI 0x64
+#define H_CPPR 0x68
+#define H_IPI 0x6c
+#define H_IPOLL 0x70
+#define H_XIRR 0x74
+#define H_PERFMON 0x7c
+#define H_MIGRATE_DMA 0x78
+#define H_REGISTER_VPA 0xDC
+#define H_CEDE 0xE0
+#define H_CONFER 0xE4
+#define H_PROD 0xE8
+#define H_GET_PPP 0xEC
+#define H_SET_PPP 0xF0
+#define H_PURR 0xF4
+#define H_PIC 0xF8
+#define H_REG_CRQ 0xFC
+#define H_FREE_CRQ 0x100
+#define H_VIO_SIGNAL 0x104
+#define H_SEND_CRQ 0x108
+#define H_COPY_RDMA 0x110
+#define H_REGISTER_LOGICAL_LAN 0x114
+#define H_FREE_LOGICAL_LAN 0x118
+#define H_ADD_LOGICAL_LAN_BUFFER 0x11C
+#define H_SEND_LOGICAL_LAN 0x120
+#define H_BULK_REMOVE 0x124
+#define H_MULTICAST_CTRL 0x130
+#define H_SET_XDABR 0x134
+#define H_STUFF_TCE 0x138
+#define H_PUT_TCE_INDIRECT 0x13C
+#define H_CHANGE_LOGICAL_LAN_MAC 0x14C
+#define H_VTERM_PARTNER_INFO 0x150
+#define H_REGISTER_VTERM 0x154
+#define H_FREE_VTERM 0x158
+#define H_RESET_EVENTS 0x15C
+#define H_ALLOC_RESOURCE 0x160
+#define H_FREE_RESOURCE 0x164
+#define H_MODIFY_QP 0x168
+#define H_QUERY_QP 0x16C
+#define H_REREGISTER_PMR 0x170
+#define H_REGISTER_SMR 0x174
+#define H_QUERY_MR 0x178
+#define H_QUERY_MW 0x17C
+#define H_QUERY_HCA 0x180
+#define H_QUERY_PORT 0x184
+#define H_MODIFY_PORT 0x188
+#define H_DEFINE_AQP1 0x18C
+#define H_GET_TRACE_BUFFER 0x190
+#define H_DEFINE_AQP0 0x194
+#define H_RESIZE_MR 0x198
+#define H_ATTACH_MCQP 0x19C
+#define H_DETACH_MCQP 0x1A0
+#define H_CREATE_RPT 0x1A4
+#define H_REMOVE_RPT 0x1A8
+#define H_REGISTER_RPAGES 0x1AC
+#define H_DISABLE_AND_GETC 0x1B0
+#define H_ERROR_DATA 0x1B4
+#define H_GET_HCA_INFO 0x1B8
+#define H_GET_PERF_COUNT 0x1BC
+#define H_MANAGE_TRACE 0x1C0
+#define H_FREE_LOGICAL_LAN_BUFFER 0x1D4
+#define H_QUERY_INT_STATE 0x1E4
+#define H_POLL_PENDING 0x1D8
+#define H_ILLAN_ATTRIBUTES 0x244
+#define H_MODIFY_HEA_QP 0x250
+#define H_QUERY_HEA_QP 0x254
+#define H_QUERY_HEA 0x258
+#define H_QUERY_HEA_PORT 0x25C
+#define H_MODIFY_HEA_PORT 0x260
+#define H_REG_BCMC 0x264
+#define H_DEREG_BCMC 0x268
+#define H_REGISTER_HEA_RPAGES 0x26C
+#define H_DISABLE_AND_GET_HEA 0x270
+#define H_GET_HEA_INFO 0x274
+#define H_ALLOC_HEA_RESOURCE 0x278
+#define H_ADD_CONN 0x284
+#define H_DEL_CONN 0x288
+#define H_JOIN 0x298
+#define H_VASI_STATE 0x2A4
+#define H_ENABLE_CRQ 0x2B0
+#define H_GET_EM_PARMS 0x2B8
+#define H_SET_MPP 0x2D0
+#define H_GET_MPP 0x2D4
+#define H_HOME_NODE_ASSOCIATIVITY 0x2EC
+#define H_BEST_ENERGY 0x2F4
+#define H_XIRR_X 0x2FC
+#define H_RANDOM 0x300
+#define H_COP 0x304
+#define H_GET_MPP_X 0x314
+#define H_SET_MODE 0x31C
+#define MAX_HCALL_OPCODE H_SET_MODE
+
+/* Platform specific hcalls, used by KVM */
+#define H_RTAS 0xf000
+
+#endif
diff --git a/arch/powerpc/include/uapi/asm/trace_hcall.h b/arch/powerpc/include/uapi/asm/trace_hcall.h
new file mode 100644
index 0000000..00eac01
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/trace_hcall.h
@@ -0,0 +1,122 @@
+#ifndef _KVM_TRACE_HCALL_MAP_H
+#define _KVM_TRACE_HCALL_MAP_H
+
+#include "hcall_codes.h"
+
+#define kvm_trace_symbol_hcall\
+ {H_REMOVE,"H_REMOVE"}, \
+ {H_ENTER,"H_ENTER"}, \
+ {H_READ,"H_READ"}, \
+ {H_CLEAR_MOD,"H_CLEAR_MOD"}, \
+ {H_CLEAR_REF,"H_CLEAR_REF"}, \
+ {H_PROTECT,"H_PROTECT"}, \
+ {H_GET_TCE,"H_GET_TCE"}, \
+ {H_PUT_TCE,"H_PUT_TCE"}, \
+ {H_SET_SPRG0,"H_SET_SPRG0"}, \
+ {H_SET_DABR,"H_SET_DABR"}, \
+ {H_PAGE_INIT,"H_PAGE_INIT"}, \
+ {H_SET_ASR,"H_SET_ASR"}, \
+ {H_ASR_ON,"H_ASR_ON"}, \
+ {H_ASR_OFF,"H_ASR_OFF"}, \
+ {H_LOGICAL_CI_LOAD,"H_LOGICAL_CI_LOAD"}, \
+ {H_LOGICAL_CI_STORE,"H_LOGICAL_CI_STORE"}, \
+ {H_LOGICAL_CACHE_LOAD,"H_LOGICAL_CACHE_LOAD"}, \
+ {H_LOGICAL_CACHE_STORE,"H_LOGICAL_CACHE_STORE"}, \
+ {H_LOGICAL_ICBI,"H_LOGICAL_ICBI"}, \
+ {H_LOGICAL_DCBF,"H_LOGICAL_DCBF"}, \
+ {H_GET_TERM_CHAR,"H_GET_TERM_CHAR"}, \
+ {H_PUT_TERM_CHAR,"H_PUT_TERM_CHAR"}, \
+ {H_REAL_TO_LOGICAL,"H_REAL_TO_LOGICAL"}, \
+ {H_HYPERVISOR_DATA,"H_HYPERVISOR_DATA"}, \
+ {H_EOI,"H_EOI"}, \
+ {H_CPPR,"H_CPPR"}, \
+ {H_IPI,"H_IPI"}, \
+ {H_IPOLL,"H_IPOLL"}, \
+ {H_XIRR,"H_XIRR"}, \
+ {H_PERFMON,"H_PERFMON"}, \
+ {H_MIGRATE_DMA,"H_MIGRATE_DMA"}, \
+ {H_REGISTER_VPA,"H_REGISTER_VPA"}, \
+ {H_CEDE,"H_CEDE"}, \
+ {H_CONFER,"H_CONFER"}, \
+ {H_PROD,"H_PROD"}, \
+ {H_GET_PPP,"H_GET_PPP"}, \
+ {H_SET_PPP,"H_SET_PPP"}, \
+ {H_PURR,"H_PURR"}, \
+ {H_PIC,"H_PIC"}, \
+ {H_REG_CRQ,"H_REG_CRQ"}, \
+ {H_FREE_CRQ,"H_FREE_CRQ"}, \
+ {H_VIO_SIGNAL,"H_VIO_SIGNAL"}, \
+ {H_SEND_CRQ,"H_SEND_CRQ"}, \
+ {H_COPY_RDMA,"H_COPY_RDMA"}, \
+ {H_REGISTER_LOGICAL_LAN,"H_REGISTER_LOGICAL_LAN"}, \
+ {H_FREE_LOGICAL_LAN,"H_FREE_LOGICAL_LAN"}, \
+ {H_ADD_LOGICAL_LAN_BUFFER,"H_ADD_LOGICAL_LAN_BUFFER"}, \
+ {H_SEND_LOGICAL_LAN,"H_SEND_LOGICAL_LAN"}, \
+ {H_BULK_REMOVE,"H_BULK_REMOVE"}, \
+ {H_MULTICAST_CTRL,"H_MULTICAST_CTRL"}, \
+ {H_SET_XDABR,"H_SET_XDABR"}, \
+ {H_STUFF_TCE,"H_STUFF_TCE"}, \
+ {H_PUT_TCE_INDIRECT,"H_PUT_TCE_INDIRECT"}, \
+ {H_CHANGE_LOGICAL_LAN_MAC,"H_CHANGE_LOGICAL_LAN_MAC"}, \
+ {H_VTERM_PARTNER_INFO,"H_VTERM_PARTNER_INFO"}, \
+ {H_REGISTER_VTERM,"H_REGISTER_VTERM"}, \
+ {H_FREE_VTERM,"H_FREE_VTERM"}, \
+ {H_RESET_EVENTS,"H_RESET_EVENTS"}, \
+ {H_ALLOC_RESOURCE,"H_ALLOC_RESOURCE"}, \
+ {H_FREE_RESOURCE,"H_FREE_RESOURCE"}, \
+ {H_MODIFY_QP,"H_MODIFY_QP"}, \
+ {H_QUERY_QP,"H_QUERY_QP"}, \
+ {H_REREGISTER_PMR,"H_REREGISTER_PMR"}, \
+ {H_REGISTER_SMR,"H_REGISTER_SMR"}, \
+ {H_QUERY_MR,"H_QUERY_MR"}, \
+ {H_QUERY_MW,"H_QUERY_MW"}, \
+ {H_QUERY_HCA,"H_QUERY_HCA"}, \
+ {H_QUERY_PORT,"H_QUERY_PORT"}, \
+ {H_MODIFY_PORT,"H_MODIFY_PORT"}, \
+ {H_DEFINE_AQP1,"H_DEFINE_AQP1"}, \
+ {H_GET_TRACE_BUFFER,"H_GET_TRACE_BUFFER"}, \
+ {H_DEFINE_AQP0,"H_DEFINE_AQP0"}, \
+ {H_RESIZE_MR,"H_RESIZE_MR"}, \
+ {H_ATTACH_MCQP,"H_ATTACH_MCQP"}, \
+ {H_DETACH_MCQP,"H_DETACH_MCQP"}, \
+ {H_CREATE_RPT,"H_CREATE_RPT"}, \
+ {H_REMOVE_RPT,"H_REMOVE_RPT"}, \
+ {H_REGISTER_RPAGES,"H_REGISTER_RPAGES"}, \
+ {H_DISABLE_AND_GETC,"H_DISABLE_AND_GETC"}, \
+ {H_ERROR_DATA,"H_ERROR_DATA"}, \
+ {H_GET_HCA_INFO,"H_GET_HCA_INFO"}, \
+ {H_GET_PERF_COUNT,"H_GET_PERF_COUNT"}, \
+ {H_MANAGE_TRACE,"H_MANAGE_TRACE"}, \
+ {H_FREE_LOGICAL_LAN_BUFFER,"H_FREE_LOGICAL_LAN_BUFFER"},\
+ {H_QUERY_INT_STATE,"H_QUERY_INT_STATE"}, \
+ {H_POLL_PENDING,"H_POLL_PENDING"}, \
+ {H_ILLAN_ATTRIBUTES,"H_ILLAN_ATTRIBUTES"}, \
+ {H_MODIFY_HEA_QP,"H_MODIFY_HEA_QP"}, \
+ {H_QUERY_HEA_QP,"H_QUERY_HEA_QP"}, \
+ {H_QUERY_HEA,"H_QUERY_HEA"}, \
+ {H_QUERY_HEA_PORT,"H_QUERY_HEA_PORT"}, \
+ {H_MODIFY_HEA_PORT,"H_MODIFY_HEA_PORT"}, \
+ {H_REG_BCMC,"H_REG_BCMC"}, \
+ {H_DEREG_BCMC,"H_DEREG_BCMC"}, \
+ {H_REGISTER_HEA_RPAGES,"H_REGISTER_HEA_RPAGES"}, \
+ {H_DISABLE_AND_GET_HEA,"H_DISABLE_AND_GET_HEA"}, \
+ {H_GET_HEA_INFO,"H_GET_HEA_INFO"}, \
+ {H_ALLOC_HEA_RESOURCE,"H_ALLOC_HEA_RESOURCE"}, \
+ {H_ADD_CONN,"H_ADD_CONN"}, \
+ {H_DEL_CONN,"H_DEL_CONN"}, \
+ {H_JOIN,"H_JOIN"}, \
+ {H_VASI_STATE,"H_VASI_STATE"}, \
+ {H_ENABLE_CRQ,"H_ENABLE_CRQ"}, \
+ {H_GET_EM_PARMS,"H_GET_EM_PARMS"}, \
+ {H_SET_MPP,"H_SET_MPP"}, \
+ {H_GET_MPP,"H_GET_MPP"}, \
+ {H_HOME_NODE_ASSOCIATIVITY,"H_HOME_NODE_ASSOCIATIVITY"},\
+ {H_BEST_ENERGY,"H_BEST_ENERGY"}, \
+ {H_XIRR_X,"H_XIRR_X"}, \
+ {H_RANDOM,"H_RANDOM"}, \
+ {H_COP,"H_COP"}, \
+ {H_GET_MPP_X,"H_GET_MPP_X"}, \
+ {H_SET_MODE,"H_SET_MODE"}, \
+ {H_RTAS,"H_RTAS"}
+
+#endif
diff --git a/arch/powerpc/kvm/trace_hv.h b/arch/powerpc/kvm/trace_hv.h
index 02d0a07..6063aa9 100644
--- a/arch/powerpc/kvm/trace_hv.h
+++ b/arch/powerpc/kvm/trace_hv.h
@@ -3,6 +3,7 @@
#include <linux/tracepoint.h>
#include <uapi/asm/trace_book3s.h>
+#include <uapi/asm/trace_hcall.h>
#include <asm/hvcall.h>
#include <asm/kvm_asm.h>
@@ -11,122 +12,6 @@
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace_hv
-#define kvm_trace_symbol_hcall \
- {H_REMOVE, "H_REMOVE"}, \
- {H_ENTER, "H_ENTER"}, \
- {H_READ, "H_READ"}, \
- {H_CLEAR_MOD, "H_CLEAR_MOD"}, \
- {H_CLEAR_REF, "H_CLEAR_REF"}, \
- {H_PROTECT, "H_PROTECT"}, \
- {H_GET_TCE, "H_GET_TCE"}, \
- {H_PUT_TCE, "H_PUT_TCE"}, \
- {H_SET_SPRG0, "H_SET_SPRG0"}, \
- {H_SET_DABR, "H_SET_DABR"}, \
- {H_PAGE_INIT, "H_PAGE_INIT"}, \
- {H_SET_ASR, "H_SET_ASR"}, \
- {H_ASR_ON, "H_ASR_ON"}, \
- {H_ASR_OFF, "H_ASR_OFF"}, \
- {H_LOGICAL_CI_LOAD, "H_LOGICAL_CI_LOAD"}, \
- {H_LOGICAL_CI_STORE, "H_LOGICAL_CI_STORE"}, \
- {H_LOGICAL_CACHE_LOAD, "H_LOGICAL_CACHE_LOAD"}, \
- {H_LOGICAL_CACHE_STORE, "H_LOGICAL_CACHE_STORE"}, \
- {H_LOGICAL_ICBI, "H_LOGICAL_ICBI"}, \
- {H_LOGICAL_DCBF, "H_LOGICAL_DCBF"}, \
- {H_GET_TERM_CHAR, "H_GET_TERM_CHAR"}, \
- {H_PUT_TERM_CHAR, "H_PUT_TERM_CHAR"}, \
- {H_REAL_TO_LOGICAL, "H_REAL_TO_LOGICAL"}, \
- {H_HYPERVISOR_DATA, "H_HYPERVISOR_DATA"}, \
- {H_EOI, "H_EOI"}, \
- {H_CPPR, "H_CPPR"}, \
- {H_IPI, "H_IPI"}, \
- {H_IPOLL, "H_IPOLL"}, \
- {H_XIRR, "H_XIRR"}, \
- {H_PERFMON, "H_PERFMON"}, \
- {H_MIGRATE_DMA, "H_MIGRATE_DMA"}, \
- {H_REGISTER_VPA, "H_REGISTER_VPA"}, \
- {H_CEDE, "H_CEDE"}, \
- {H_CONFER, "H_CONFER"}, \
- {H_PROD, "H_PROD"}, \
- {H_GET_PPP, "H_GET_PPP"}, \
- {H_SET_PPP, "H_SET_PPP"}, \
- {H_PURR, "H_PURR"}, \
- {H_PIC, "H_PIC"}, \
- {H_REG_CRQ, "H_REG_CRQ"}, \
- {H_FREE_CRQ, "H_FREE_CRQ"}, \
- {H_VIO_SIGNAL, "H_VIO_SIGNAL"}, \
- {H_SEND_CRQ, "H_SEND_CRQ"}, \
- {H_COPY_RDMA, "H_COPY_RDMA"}, \
- {H_REGISTER_LOGICAL_LAN, "H_REGISTER_LOGICAL_LAN"}, \
- {H_FREE_LOGICAL_LAN, "H_FREE_LOGICAL_LAN"}, \
- {H_ADD_LOGICAL_LAN_BUFFER, "H_ADD_LOGICAL_LAN_BUFFER"}, \
- {H_SEND_LOGICAL_LAN, "H_SEND_LOGICAL_LAN"}, \
- {H_BULK_REMOVE, "H_BULK_REMOVE"}, \
- {H_MULTICAST_CTRL, "H_MULTICAST_CTRL"}, \
- {H_SET_XDABR, "H_SET_XDABR"}, \
- {H_STUFF_TCE, "H_STUFF_TCE"}, \
- {H_PUT_TCE_INDIRECT, "H_PUT_TCE_INDIRECT"}, \
- {H_CHANGE_LOGICAL_LAN_MAC, "H_CHANGE_LOGICAL_LAN_MAC"}, \
- {H_VTERM_PARTNER_INFO, "H_VTERM_PARTNER_INFO"}, \
- {H_REGISTER_VTERM, "H_REGISTER_VTERM"}, \
- {H_FREE_VTERM, "H_FREE_VTERM"}, \
- {H_RESET_EVENTS, "H_RESET_EVENTS"}, \
- {H_ALLOC_RESOURCE, "H_ALLOC_RESOURCE"}, \
- {H_FREE_RESOURCE, "H_FREE_RESOURCE"}, \
- {H_MODIFY_QP, "H_MODIFY_QP"}, \
- {H_QUERY_QP, "H_QUERY_QP"}, \
- {H_REREGISTER_PMR, "H_REREGISTER_PMR"}, \
- {H_REGISTER_SMR, "H_REGISTER_SMR"}, \
- {H_QUERY_MR, "H_QUERY_MR"}, \
- {H_QUERY_MW, "H_QUERY_MW"}, \
- {H_QUERY_HCA, "H_QUERY_HCA"}, \
- {H_QUERY_PORT, "H_QUERY_PORT"}, \
- {H_MODIFY_PORT, "H_MODIFY_PORT"}, \
- {H_DEFINE_AQP1, "H_DEFINE_AQP1"}, \
- {H_GET_TRACE_BUFFER, "H_GET_TRACE_BUFFER"}, \
- {H_DEFINE_AQP0, "H_DEFINE_AQP0"}, \
- {H_RESIZE_MR, "H_RESIZE_MR"}, \
- {H_ATTACH_MCQP, "H_ATTACH_MCQP"}, \
- {H_DETACH_MCQP, "H_DETACH_MCQP"}, \
- {H_CREATE_RPT, "H_CREATE_RPT"}, \
- {H_REMOVE_RPT, "H_REMOVE_RPT"}, \
- {H_REGISTER_RPAGES, "H_REGISTER_RPAGES"}, \
- {H_DISABLE_AND_GETC, "H_DISABLE_AND_GETC"}, \
- {H_ERROR_DATA, "H_ERROR_DATA"}, \
- {H_GET_HCA_INFO, "H_GET_HCA_INFO"}, \
- {H_GET_PERF_COUNT, "H_GET_PERF_COUNT"}, \
- {H_MANAGE_TRACE, "H_MANAGE_TRACE"}, \
- {H_FREE_LOGICAL_LAN_BUFFER, "H_FREE_LOGICAL_LAN_BUFFER"}, \
- {H_QUERY_INT_STATE, "H_QUERY_INT_STATE"}, \
- {H_POLL_PENDING, "H_POLL_PENDING"}, \
- {H_ILLAN_ATTRIBUTES, "H_ILLAN_ATTRIBUTES"}, \
- {H_MODIFY_HEA_QP, "H_MODIFY_HEA_QP"}, \
- {H_QUERY_HEA_QP, "H_QUERY_HEA_QP"}, \
- {H_QUERY_HEA, "H_QUERY_HEA"}, \
- {H_QUERY_HEA_PORT, "H_QUERY_HEA_PORT"}, \
- {H_MODIFY_HEA_PORT, "H_MODIFY_HEA_PORT"}, \
- {H_REG_BCMC, "H_REG_BCMC"}, \
- {H_DEREG_BCMC, "H_DEREG_BCMC"}, \
- {H_REGISTER_HEA_RPAGES, "H_REGISTER_HEA_RPAGES"}, \
- {H_DISABLE_AND_GET_HEA, "H_DISABLE_AND_GET_HEA"}, \
- {H_GET_HEA_INFO, "H_GET_HEA_INFO"}, \
- {H_ALLOC_HEA_RESOURCE, "H_ALLOC_HEA_RESOURCE"}, \
- {H_ADD_CONN, "H_ADD_CONN"}, \
- {H_DEL_CONN, "H_DEL_CONN"}, \
- {H_JOIN, "H_JOIN"}, \
- {H_VASI_STATE, "H_VASI_STATE"}, \
- {H_ENABLE_CRQ, "H_ENABLE_CRQ"}, \
- {H_GET_EM_PARMS, "H_GET_EM_PARMS"}, \
- {H_SET_MPP, "H_SET_MPP"}, \
- {H_GET_MPP, "H_GET_MPP"}, \
- {H_HOME_NODE_ASSOCIATIVITY, "H_HOME_NODE_ASSOCIATIVITY"}, \
- {H_BEST_ENERGY, "H_BEST_ENERGY"}, \
- {H_XIRR_X, "H_XIRR_X"}, \
- {H_RANDOM, "H_RANDOM"}, \
- {H_COP, "H_COP"}, \
- {H_GET_MPP_X, "H_GET_MPP_X"}, \
- {H_SET_MODE, "H_SET_MODE"}, \
- {H_RTAS, "H_RTAS"}
-
#define kvm_trace_symbol_kvmret \
{RESUME_GUEST, "RESUME_GUEST"}, \
{RESUME_GUEST_NV, "RESUME_GUEST_NV"}, \
--
1.9.3
This patch adds KVM hypervisor call analysis to perf for powerpc.
- Trace hcall events :
perf kvm stat record
- Show the results :
perf kvm stat report --event=hcall
The results show the number of hypervisor calls from the guest grouped
into their respective reasons displayed with the frequency.
This patch makes use of two additional tracepoints "kvm_hv:kvm_hcall_enter"
and "kvm_hv:kvm_hcall_exit". It uses the pSeries hypervisor codes
exported through uapi to classify the hcalls into their respective reasons.
# pgrep qemu
A sample output :
19378
60515
2 VMs running.
# perf kvm stat record -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 4.153 MB perf.data.guest (39624 samples) ]
# perf kvm stat report -p 60515 --event=hcall
Analyze events for pid(s) 60515, all VCPUs:
HCALL-EVENT Samples Samples% Time% Min Time Max Time Avg time
H_VIO_SIGNAL 1034 38.44% 15.77% 0.36us 1.59us 0.44us ( +- 0.66% )
H_SEND_CRQ 652 24.24% 10.97% 0.39us 1.84us 0.49us ( +- 1.20% )
H_IPI 523 19.44% 62.05% 1.35us 19.70us 3.44us ( +- 2.88% )
H_PUT_TERM_CHAR 411 15.28% 8.03% 0.38us 3.77us 0.57us ( +- 1.61% )
H_GET_TERM_CHAR 50 1.86% 0.99% 0.40us 0.98us 0.57us ( +- 3.37% )
H_EOI 20 0.74% 2.19% 2.22us 4.72us 3.17us ( +- 5.96% )
Total Samples:2690, Total events handled time:2896.94us.
Signed-off-by: Hemant Kumar <[email protected]>
---
arch/powerpc/include/uapi/asm/kvm_perf.h | 4 +++
tools/perf/arch/powerpc/util/kvm-stat.c | 61 ++++++++++++++++++++++++++++++++
2 files changed, 65 insertions(+)
diff --git a/arch/powerpc/include/uapi/asm/kvm_perf.h b/arch/powerpc/include/uapi/asm/kvm_perf.h
index 30fa670..440902e 100644
--- a/arch/powerpc/include/uapi/asm/kvm_perf.h
+++ b/arch/powerpc/include/uapi/asm/kvm_perf.h
@@ -3,6 +3,7 @@
#include <asm/trace_book3s.h>
#include <asm/kvm.h>
+#include <asm/trace_hcall.h>
#define DECODE_STR_LEN 20
@@ -11,5 +12,8 @@
#define KVM_ENTRY_TRACE "kvm_hv:kvm_guest_enter"
#define KVM_EXIT_TRACE "kvm_hv:kvm_guest_exit"
#define KVM_EXIT_REASON "trap"
+#define KVM_HCALL_ENTRY_TRACE "kvm_hv:kvm_hcall_enter"
+#define KVM_HCALL_EXIT_TRACE "kvm_hv:kvm_hcall_exit"
+#define KVM_HCALL_REASON "req"
#endif /* _ASM_POWERPC_KVM_PERF_H */
diff --git a/tools/perf/arch/powerpc/util/kvm-stat.c b/tools/perf/arch/powerpc/util/kvm-stat.c
index 62cdcc1..685201c 100644
--- a/tools/perf/arch/powerpc/util/kvm-stat.c
+++ b/tools/perf/arch/powerpc/util/kvm-stat.c
@@ -1,7 +1,9 @@
#include "../../util/kvm-stat.h"
#include <asm/kvm_perf.h>
+#include "../../util/debug.h"
define_exit_reasons_table(hv_exit_reasons, kvm_trace_symbol_exit);
+define_exit_reasons_table(hcall_reasons, kvm_trace_symbol_hcall);
static struct kvm_events_ops exit_events = {
.is_begin_event = exit_event_begin,
@@ -10,14 +12,73 @@ static struct kvm_events_ops exit_events = {
.name = "VM-EXIT"
};
+static void hcall_event_get_key(struct perf_evsel *evsel,
+ struct perf_sample *sample,
+ struct event_key *key)
+{
+ key->info = 0;
+ key->key = perf_evsel__intval(evsel, sample, KVM_HCALL_REASON);
+}
+
+static const char *get_exit_reason(u64 exit_code)
+{
+ struct exit_reasons_table *tbl = hcall_reasons;
+
+ while (tbl->reason != NULL) {
+ if (tbl->exit_code == exit_code)
+ return tbl->reason;
+ tbl++;
+ }
+
+ pr_err("Unknown kvm hcall exit code: %lld\n",
+ (unsigned long long)exit_code);
+ return "UNKNOWN";
+}
+
+static bool hcall_event_end(struct perf_evsel *evsel,
+ struct perf_sample *sample __maybe_unused,
+ struct event_key *key __maybe_unused)
+{
+ return (!strcmp(evsel->name, KVM_HCALL_EXIT_TRACE));
+}
+
+static bool hcall_event_begin(struct perf_evsel *evsel,
+ struct perf_sample *sample, struct event_key *key)
+{
+ if (!strcmp(evsel->name, KVM_HCALL_ENTRY_TRACE)) {
+ hcall_event_get_key(evsel, sample, key);
+ return true;
+ }
+
+ return false;
+}
+static void hcall_event_decode_key(struct perf_kvm_stat *kvm __maybe_unused,
+ struct event_key *key,
+ char *decode)
+{
+ const char *hcall_reason = get_exit_reason(key->key);
+
+ scnprintf(decode, DECODE_STR_LEN, "%s", hcall_reason);
+}
+
+static struct kvm_events_ops hcall_events = {
+ .is_begin_event = hcall_event_begin,
+ .is_end_event = hcall_event_end,
+ .decode_key = hcall_event_decode_key,
+ .name = "HCALL-EVENT",
+};
+
const char *const kvm_events_tp[] = {
"kvm_hv:kvm_guest_exit",
"kvm_hv:kvm_guest_enter",
+ "kvm_hv:kvm_hcall_enter",
+ "kvm_hv:kvm_hcall_exit",
NULL,
};
struct kvm_reg_events_ops kvm_reg_events_ops[] = {
{ .name = "vmexit", .ops = &exit_events },
+ { .name = "hcall", .ops = &hcall_events },
{ NULL, NULL },
};
--
1.9.3