sys: improve perf_event_open description

sys/perf.txt

@@ -21,15 +21,24 @@ ioctl$PERF_EVENT_IOC_SET_BPF(fd fd_perf, cmd const[PERF_EVENT_IOC_SET_BPF], prog
 perf_flags = PERF_FLAG_FD_NO_GROUP, PERF_FLAG_FD_OUTPUT, PERF_FLAG_PID_CGROUP, PERF_FLAG_FD_CLOEXEC
 perf_event_type = PERF_TYPE_HARDWARE, PERF_TYPE_SOFTWARE, PERF_TYPE_TRACEPOINT, PERF_TYPE_HW_CACHE, PERF_TYPE_RAW, PERF_TYPE_BREAKPOINT
 perf_bp_type = HW_BREAKPOINT_EMPTY, HW_BREAKPOINT_R, HW_BREAKPOINT_W, HW_BREAKPOINT_X
-perf_attr_flags = 1, 2, 4
+perf_sample_type = PERF_SAMPLE_IP, PERF_SAMPLE_TID, PERF_SAMPLE_TIME, PERF_SAMPLE_ADDR, PERF_SAMPLE_READ, PERF_SAMPLE_CALLCHAIN, PERF_SAMPLE_ID, PERF_SAMPLE_CPU, PERF_SAMPLE_PERIOD, PERF_SAMPLE_STREAM_ID, PERF_SAMPLE_RAW, PERF_SAMPLE_BRANCH_STACK, PERF_SAMPLE_REGS_USER, PERF_SAMPLE_STACK_USER, PERF_SAMPLE_WEIGHT, PERF_SAMPLE_DATA_SRC, PERF_SAMPLE_IDENTIFIER, PERF_SAMPLE_TRANSACTION, PERF_SAMPLE_REGS_INTR
+perf_read_format = PERF_FORMAT_TOTAL_TIME_ENABLED, PERF_FORMAT_TOTAL_TIME_RUNNING, PERF_FORMAT_ID, PERF_FORMAT_GROUP
+perf_branch_sample_type = PERF_SAMPLE_BRANCH_USER, PERF_SAMPLE_BRANCH_KERNEL, PERF_SAMPLE_BRANCH_HV, PERF_SAMPLE_BRANCH_ANY, PERF_SAMPLE_BRANCH_ANY_CALL, PERF_SAMPLE_BRANCH_ANY_RETURN, PERF_SAMPLE_BRANCH_IND_CALL, PERF_SAMPLE_BRANCH_ABORT_TX, PERF_SAMPLE_BRANCH_IN_TX, PERF_SAMPLE_BRANCH_NO_TX, PERF_SAMPLE_BRANCH_COND, PERF_SAMPLE_BRANCH_CALL_STACK, PERF_SAMPLE_BRANCH_IND_JUMP, PERF_SAMPLE_BRANCH_CALL, PERF_SAMPLE_BRANCH_NO_FLAGS, PERF_SAMPLE_BRANCH_NO_CYCLES, PERF_SAMPLE_BRANCH_MAX
+perf_attr_flags = 1, 2, 4, 8
 
 perf_event_attr {
 	type	flags[perf_event_type, int32]
 	size	len[parent, int32]
-	config	int64
+#TODO: config can contain lots of various flags depending on type.
+# this is a hacky way to generate something reasonable.
+	config0	int8
+	config1	int8
+	config2	int8
+	config3	int8
+	config4	const[0, int32]
 	freq	int64
-	sample	int64
+	sample	flags[perf_sample_type, int64]
-	format	int64
+	format	flags[perf_read_format, int64]
 # Lots of various bit flags.
 # Split into int8's because for int64 large values generated less frequently than small ones.
 # Kernel checks that unused bits are zero.
@@ -40,12 +49,14 @@ perf_event_attr {
 	freserv	const[0, int32]
 	wakeup	int32
 	bptype	flags[perf_bp_type, int32]
-	config1	int64
+	config5	int64
-	config2	int64
+	config6	int64
-	bsample	int64
+	bsample	flags[perf_branch_sample_type, int64]
 	regs	int64
 	stack	int64
 	clockid	flags[clock_type, int32]
 	regs2	int64
 	auxwm	int32
+	maxstk	int16
+	reserv	const[0, int16]
 }

sys/perf_amd64.const

@@ -16,6 +16,46 @@ PERF_FLAG_FD_CLOEXEC = 8
 PERF_FLAG_FD_NO_GROUP = 1
 PERF_FLAG_FD_OUTPUT = 2
 PERF_FLAG_PID_CGROUP = 4
+PERF_FORMAT_GROUP = 8
+PERF_FORMAT_ID = 4
+PERF_FORMAT_TOTAL_TIME_ENABLED = 1
+PERF_FORMAT_TOTAL_TIME_RUNNING = 2
+PERF_SAMPLE_ADDR = 8
+PERF_SAMPLE_BRANCH_ABORT_TX = 128
+PERF_SAMPLE_BRANCH_ANY = 8
+PERF_SAMPLE_BRANCH_ANY_CALL = 16
+PERF_SAMPLE_BRANCH_ANY_RETURN = 32
+PERF_SAMPLE_BRANCH_CALL = 8192
+PERF_SAMPLE_BRANCH_CALL_STACK = 2048
+PERF_SAMPLE_BRANCH_COND = 1024
+PERF_SAMPLE_BRANCH_HV = 4
+PERF_SAMPLE_BRANCH_IND_CALL = 64
+PERF_SAMPLE_BRANCH_IND_JUMP = 4096
+PERF_SAMPLE_BRANCH_IN_TX = 256
+PERF_SAMPLE_BRANCH_KERNEL = 2
+PERF_SAMPLE_BRANCH_MAX = 65536
+PERF_SAMPLE_BRANCH_NO_CYCLES = 32768
+PERF_SAMPLE_BRANCH_NO_FLAGS = 16384
+PERF_SAMPLE_BRANCH_NO_TX = 512
+PERF_SAMPLE_BRANCH_STACK = 2048
+PERF_SAMPLE_BRANCH_USER = 1
+PERF_SAMPLE_CALLCHAIN = 32
+PERF_SAMPLE_CPU = 128
+PERF_SAMPLE_DATA_SRC = 32768
+PERF_SAMPLE_ID = 64
+PERF_SAMPLE_IDENTIFIER = 65536
+PERF_SAMPLE_IP = 1
+PERF_SAMPLE_PERIOD = 256
+PERF_SAMPLE_RAW = 1024
+PERF_SAMPLE_READ = 16
+PERF_SAMPLE_REGS_INTR = 262144
+PERF_SAMPLE_REGS_USER = 4096
+PERF_SAMPLE_STACK_USER = 8192
+PERF_SAMPLE_STREAM_ID = 512
+PERF_SAMPLE_TID = 2
+PERF_SAMPLE_TIME = 4
+PERF_SAMPLE_TRANSACTION = 131072
+PERF_SAMPLE_WEIGHT = 16384
 PERF_TYPE_BREAKPOINT = 5
 PERF_TYPE_HARDWARE = 0
 PERF_TYPE_HW_CACHE = 3

sys/perf_arm64.const

@@ -16,6 +16,46 @@ PERF_FLAG_FD_CLOEXEC = 8
 PERF_FLAG_FD_NO_GROUP = 1
 PERF_FLAG_FD_OUTPUT = 2
 PERF_FLAG_PID_CGROUP = 4
+PERF_FORMAT_GROUP = 8
+PERF_FORMAT_ID = 4
+PERF_FORMAT_TOTAL_TIME_ENABLED = 1
+PERF_FORMAT_TOTAL_TIME_RUNNING = 2
+PERF_SAMPLE_ADDR = 8
+PERF_SAMPLE_BRANCH_ABORT_TX = 128
+PERF_SAMPLE_BRANCH_ANY = 8
+PERF_SAMPLE_BRANCH_ANY_CALL = 16
+PERF_SAMPLE_BRANCH_ANY_RETURN = 32
+PERF_SAMPLE_BRANCH_CALL = 8192
+PERF_SAMPLE_BRANCH_CALL_STACK = 2048
+PERF_SAMPLE_BRANCH_COND = 1024
+PERF_SAMPLE_BRANCH_HV = 4
+PERF_SAMPLE_BRANCH_IND_CALL = 64
+PERF_SAMPLE_BRANCH_IND_JUMP = 4096
+PERF_SAMPLE_BRANCH_IN_TX = 256
+PERF_SAMPLE_BRANCH_KERNEL = 2
+PERF_SAMPLE_BRANCH_MAX = 65536
+PERF_SAMPLE_BRANCH_NO_CYCLES = 32768
+PERF_SAMPLE_BRANCH_NO_FLAGS = 16384
+PERF_SAMPLE_BRANCH_NO_TX = 512
+PERF_SAMPLE_BRANCH_STACK = 2048
+PERF_SAMPLE_BRANCH_USER = 1
+PERF_SAMPLE_CALLCHAIN = 32
+PERF_SAMPLE_CPU = 128
+PERF_SAMPLE_DATA_SRC = 32768
+PERF_SAMPLE_ID = 64
+PERF_SAMPLE_IDENTIFIER = 65536
+PERF_SAMPLE_IP = 1
+PERF_SAMPLE_PERIOD = 256
+PERF_SAMPLE_RAW = 1024
+PERF_SAMPLE_READ = 16
+PERF_SAMPLE_REGS_INTR = 262144
+PERF_SAMPLE_REGS_USER = 4096
+PERF_SAMPLE_STACK_USER = 8192
+PERF_SAMPLE_STREAM_ID = 512
+PERF_SAMPLE_TID = 2
+PERF_SAMPLE_TIME = 4
+PERF_SAMPLE_TRANSACTION = 131072
+PERF_SAMPLE_WEIGHT = 16384
 PERF_TYPE_BREAKPOINT = 5
 PERF_TYPE_HARDWARE = 0
 PERF_TYPE_HW_CACHE = 3

sys/perf_ppc64le.const

@@ -16,6 +16,46 @@ PERF_FLAG_FD_CLOEXEC = 8
 PERF_FLAG_FD_NO_GROUP = 1
 PERF_FLAG_FD_OUTPUT = 2
 PERF_FLAG_PID_CGROUP = 4
+PERF_FORMAT_GROUP = 8
+PERF_FORMAT_ID = 4
+PERF_FORMAT_TOTAL_TIME_ENABLED = 1
+PERF_FORMAT_TOTAL_TIME_RUNNING = 2
+PERF_SAMPLE_ADDR = 8
+PERF_SAMPLE_BRANCH_ABORT_TX = 128
+PERF_SAMPLE_BRANCH_ANY = 8
+PERF_SAMPLE_BRANCH_ANY_CALL = 16
+PERF_SAMPLE_BRANCH_ANY_RETURN = 32
+PERF_SAMPLE_BRANCH_CALL = 8192
+PERF_SAMPLE_BRANCH_CALL_STACK = 2048
+PERF_SAMPLE_BRANCH_COND = 1024
+PERF_SAMPLE_BRANCH_HV = 4
+PERF_SAMPLE_BRANCH_IND_CALL = 64
+PERF_SAMPLE_BRANCH_IND_JUMP = 4096
+PERF_SAMPLE_BRANCH_IN_TX = 256
+PERF_SAMPLE_BRANCH_KERNEL = 2
+PERF_SAMPLE_BRANCH_MAX = 65536
+PERF_SAMPLE_BRANCH_NO_CYCLES = 32768
+PERF_SAMPLE_BRANCH_NO_FLAGS = 16384
+PERF_SAMPLE_BRANCH_NO_TX = 512
+PERF_SAMPLE_BRANCH_STACK = 2048
+PERF_SAMPLE_BRANCH_USER = 1
+PERF_SAMPLE_CALLCHAIN = 32
+PERF_SAMPLE_CPU = 128
+PERF_SAMPLE_DATA_SRC = 32768
+PERF_SAMPLE_ID = 64
+PERF_SAMPLE_IDENTIFIER = 65536
+PERF_SAMPLE_IP = 1
+PERF_SAMPLE_PERIOD = 256
+PERF_SAMPLE_RAW = 1024
+PERF_SAMPLE_READ = 16
+PERF_SAMPLE_REGS_INTR = 262144
+PERF_SAMPLE_REGS_USER = 4096
+PERF_SAMPLE_STACK_USER = 8192
+PERF_SAMPLE_STREAM_ID = 512
+PERF_SAMPLE_TID = 2
+PERF_SAMPLE_TIME = 4
+PERF_SAMPLE_TRANSACTION = 131072
+PERF_SAMPLE_WEIGHT = 16384
 PERF_TYPE_BREAKPOINT = 5
 PERF_TYPE_HARDWARE = 0
 PERF_TYPE_HW_CACHE = 3