syzkaller/sys/perf.txt

# Copyright 2015 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

include <linux/perf_event.h>
include <linux/hw_breakpoint.h>

resource fd_perf[fd]

perf_event_open(attr ptr[in, perf_event_attr], pid pid, cpu intptr, group fd_perf, flags flags[perf_flags]) fd_perf

ioctl$PERF_EVENT_IOC_ENABLE(fd fd_perf, cmd const[PERF_EVENT_IOC_ENABLE], flags intptr)
ioctl$PERF_EVENT_IOC_DISABLE(fd fd_perf, cmd const[PERF_EVENT_IOC_DISABLE], flags intptr)
ioctl$PERF_EVENT_IOC_RESET(fd fd_perf, cmd const[PERF_EVENT_IOC_RESET], flags intptr)
ioctl$PERF_EVENT_IOC_REFRESH(fd fd_perf, cmd const[PERF_EVENT_IOC_REFRESH], refresh intptr)
ioctl$PERF_EVENT_IOC_PERIOD(fd fd_perf, cmd const[PERF_EVENT_IOC_PERIOD], period ptr[in, int64])
ioctl$PERF_EVENT_IOC_ID(fd fd_perf, cmd const[PERF_EVENT_IOC_ID], id ptr[out, int64])
ioctl$PERF_EVENT_IOC_SET_OUTPUT(fd fd_perf, cmd const[PERF_EVENT_IOC_SET_OUTPUT], other fd_perf)
ioctl$PERF_EVENT_IOC_SET_FILTER(fd fd_perf, cmd const[PERF_EVENT_IOC_SET_FILTER], filter string)
ioctl$PERF_EVENT_IOC_SET_BPF(fd fd_perf, cmd const[PERF_EVENT_IOC_SET_BPF], prog fd_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_event_attr {
	type	flags[perf_event_type, int32]
	size	len[parent, int32]
	config	int64
	freq	int64
	sample	int64
	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.
	flags0	int8
	flags1	int8
	flags2	int8
	flags3	flags[perf_attr_flags, int8]
	freserv	const[0, int32]
	wakeup	int32
	bptype	flags[perf_bp_type, int32]
	config1	int64
	config2	int64
	bsample	int64
	regs	int64
	stack	int64
	clockid	flags[clock_type, int32]
	regs2	int64
	auxwm	int32
}