mirror of
https://github.com/ziglang/zig.git
synced 2026-01-02 11:33:21 +00:00
Merge pull request #10088 from ziglang/std-os-perf
std: add Linux perf syscall bits
This commit is contained in:
Andrew Kelley
GitHub
commit
08dc840247
@ -1703,8 +1703,6 @@ pub const CLOCK = struct {
|
||||
/// Max open files per process
|
||||
/// https://opensource.apple.com/source/xnu/xnu-4903.221.2/bsd/sys/syslimits.h.auto.html
|
||||
pub const OPEN_MAX = 10240;
|
||||
pub const RUSAGE_SELF = 0;
|
||||
pub const RUSAGE_CHILDREN = -1;
|
||||
|
||||
pub const rusage = extern struct {
|
||||
utime: timeval,
|
||||
@ -1723,6 +1721,9 @@ pub const rusage = extern struct {
|
||||
nsignals: isize,
|
||||
nvcsw: isize,
|
||||
nivcsw: isize,
|
||||
|
||||
pub const SELF = 0;
|
||||
pub const CHILDREN = -1;
|
||||
};
|
||||
|
||||
pub const rlimit_resource = enum(c_int) {
|
||||
|
||||
@ -1550,10 +1550,6 @@ pub const rlimit = extern struct {
|
||||
max: rlim_t,
|
||||
};
|
||||
|
||||
pub const RUSAGE_SELF = 0;
|
||||
pub const RUSAGE_CHILDREN = -1;
|
||||
pub const RUSAGE_THREAD = 1;
|
||||
|
||||
pub const rusage = extern struct {
|
||||
utime: timeval,
|
||||
stime: timeval,
|
||||
@ -1571,6 +1567,10 @@ pub const rusage = extern struct {
|
||||
nsignals: isize,
|
||||
nvcsw: isize,
|
||||
nivcsw: isize,
|
||||
|
||||
pub const SELF = 0;
|
||||
pub const CHILDREN = -1;
|
||||
pub const THREAD = 1;
|
||||
};
|
||||
|
||||
pub const SHUT = struct {
|
||||
|
||||
@ -6349,3 +6349,87 @@ pub fn madvise(ptr: [*]align(mem.page_size) u8, length: usize, advice: u32) Madv
|
||||
else => |err| return unexpectedErrno(err),
|
||||
}
|
||||
}
|
||||
|
||||
pub const PerfEventOpenError = error{
|
||||
/// Returned if the perf_event_attr size value is too small (smaller
|
||||
/// than PERF_ATTR_SIZE_VER0), too big (larger than the page size),
|
||||
/// or larger than the kernel supports and the extra bytes are not
|
||||
/// zero. When E2BIG is returned, the perf_event_attr size field is
|
||||
/// overwritten by the kernel to be the size of the structure it was
|
||||
/// expecting.
|
||||
TooBig,
|
||||
/// Returned when the requested event requires CAP_SYS_ADMIN permis‐
|
||||
/// sions (or a more permissive perf_event paranoid setting). Some
|
||||
/// common cases where an unprivileged process may encounter this
|
||||
/// error: attaching to a process owned by a different user; moni‐
|
||||
/// toring all processes on a given CPU (i.e., specifying the pid
|
||||
/// argument as -1); and not setting exclude_kernel when the para‐
|
||||
/// noid setting requires it.
|
||||
/// Also:
|
||||
/// Returned on many (but not all) architectures when an unsupported
|
||||
/// exclude_hv, exclude_idle, exclude_user, or exclude_kernel set‐
|
||||
/// ting is specified.
|
||||
/// It can also happen, as with EACCES, when the requested event re‐
|
||||
/// quires CAP_SYS_ADMIN permissions (or a more permissive
|
||||
/// perf_event paranoid setting). This includes setting a break‐
|
||||
/// point on a kernel address, and (since Linux 3.13) setting a ker‐
|
||||
/// nel function-trace tracepoint.
|
||||
PermissionDenied,
|
||||
/// Returned if another event already has exclusive access to the
|
||||
/// PMU.
|
||||
DeviceBusy,
|
||||
/// Each opened event uses one file descriptor. If a large number
|
||||
/// of events are opened, the per-process limit on the number of
|
||||
/// open file descriptors will be reached, and no more events can be
|
||||
/// created.
|
||||
ProcessResources,
|
||||
EventRequiresUnsupportedCpuFeature,
|
||||
/// Returned if you try to add more breakpoint
|
||||
/// events than supported by the hardware.
|
||||
TooManyBreakpoints,
|
||||
/// Returned if PERF_SAMPLE_STACK_USER is set in sample_type and it
|
||||
/// is not supported by hardware.
|
||||
SampleStackNotSupported,
|
||||
/// Returned if an event requiring a specific hardware feature is
|
||||
/// requested but there is no hardware support. This includes re‐
|
||||
/// questing low-skid events if not supported, branch tracing if it
|
||||
/// is not available, sampling if no PMU interrupt is available, and
|
||||
/// branch stacks for software events.
|
||||
EventNotSupported,
|
||||
/// Returned if PERF_SAMPLE_CALLCHAIN is requested and sam‐
|
||||
/// ple_max_stack is larger than the maximum specified in
|
||||
/// /proc/sys/kernel/perf_event_max_stack.
|
||||
SampleMaxStackOverflow,
|
||||
/// Returned if attempting to attach to a process that does not exist.
|
||||
ProcessNotFound,
|
||||
} || UnexpectedError;
|
||||
|
||||
pub fn perf_event_open(
|
||||
attr: *linux.perf_event_attr,
|
||||
pid: pid_t,
|
||||
cpu: i32,
|
||||
group_fd: fd_t,
|
||||
flags: usize,
|
||||
) PerfEventOpenError!fd_t {
|
||||
const rc = system.perf_event_open(attr, pid, cpu, group_fd, flags);
|
||||
switch (errno(rc)) {
|
||||
.SUCCESS => return @intCast(fd_t, rc),
|
||||
.@"2BIG" => return error.TooBig,
|
||||
.ACCES => return error.PermissionDenied,
|
||||
.BADF => unreachable, // group_fd file descriptor is not valid.
|
||||
.BUSY => return error.DeviceBusy,
|
||||
.FAULT => unreachable, // Segmentation fault.
|
||||
.INVAL => unreachable, // Bad attr settings.
|
||||
.INTR => unreachable, // Mixed perf and ftrace handling for a uprobe.
|
||||
.MFILE => return error.ProcessResources,
|
||||
.NODEV => return error.EventRequiresUnsupportedCpuFeature,
|
||||
.NOENT => unreachable, // Invalid type setting.
|
||||
.NOSPC => return error.TooManyBreakpoints,
|
||||
.NOSYS => return error.SampleStackNotSupported,
|
||||
.OPNOTSUPP => return error.EventNotSupported,
|
||||
.OVERFLOW => return error.SampleMaxStackOverflow,
|
||||
.PERM => return error.PermissionDenied,
|
||||
.SRCH => return error.ProcessNotFound,
|
||||
else => |err| return unexpectedErrno(err),
|
||||
}
|
||||
}
|
||||
|
||||
@ -1638,6 +1638,23 @@ pub fn fadvise(fd: fd_t, offset: i64, len: i64, advice: usize) usize {
|
||||
}
|
||||
}
|
||||
|
||||
pub fn perf_event_open(
|
||||
attr: *perf_event_attr,
|
||||
pid: pid_t,
|
||||
cpu: i32,
|
||||
group_fd: fd_t,
|
||||
flags: usize,
|
||||
) usize {
|
||||
return syscall5(
|
||||
.perf_event_open,
|
||||
@ptrToInt(attr),
|
||||
@bitCast(usize, @as(isize, pid)),
|
||||
@bitCast(usize, @as(isize, cpu)),
|
||||
@bitCast(usize, @as(isize, group_fd)),
|
||||
flags,
|
||||
);
|
||||
}
|
||||
|
||||
pub const E = switch (native_arch) {
|
||||
.mips, .mipsel => @import("linux/errno/mips.zig").E,
|
||||
.sparc, .sparcel, .sparcv9 => @import("linux/errno/sparc.zig").E,
|
||||
@ -3781,10 +3798,6 @@ pub const MFD_HUGE_1GB = HUGETLB_FLAG_ENCODE_1GB;
|
||||
pub const MFD_HUGE_2GB = HUGETLB_FLAG_ENCODE_2GB;
|
||||
pub const MFD_HUGE_16GB = HUGETLB_FLAG_ENCODE_16GB;
|
||||
|
||||
pub const RUSAGE_SELF = 0;
|
||||
pub const RUSAGE_CHILDREN = -1;
|
||||
pub const RUSAGE_THREAD = 1;
|
||||
|
||||
pub const rusage = extern struct {
|
||||
utime: timeval,
|
||||
stime: timeval,
|
||||
@ -3803,6 +3816,10 @@ pub const rusage = extern struct {
|
||||
nvcsw: isize,
|
||||
nivcsw: isize,
|
||||
__reserved: [16]isize = [1]isize{0} ** 16,
|
||||
|
||||
pub const SELF = 0;
|
||||
pub const CHILDREN = -1;
|
||||
pub const THREAD = 1;
|
||||
};
|
||||
|
||||
pub const cc_t = u8;
|
||||
@ -4925,3 +4942,263 @@ pub const rtnl_link_stats64 = extern struct {
|
||||
/// dropped, no handler found
|
||||
rx_nohandler: u64,
|
||||
};
|
||||
|
||||
pub const perf_event_attr = extern struct {
|
||||
/// Major type: hardware/software/tracepoint/etc.
|
||||
type: PERF.TYPE = undefined,
|
||||
/// Size of the attr structure, for fwd/bwd compat.
|
||||
size: u32 = @sizeOf(perf_event_attr),
|
||||
/// Type specific configuration information.
|
||||
config: u64 = 0,
|
||||
|
||||
sample_period_or_freq: u64 = 0,
|
||||
sample_type: u64 = 0,
|
||||
read_format: u64 = 0,
|
||||
|
||||
flags: packed struct {
|
||||
/// off by default
|
||||
disabled: bool = false,
|
||||
/// children inherit it
|
||||
inherit: bool = false,
|
||||
/// must always be on PMU
|
||||
pinned: bool = false,
|
||||
/// only group on PMU
|
||||
exclusive: bool = false,
|
||||
/// don't count user
|
||||
exclude_user: bool = false,
|
||||
/// ditto kernel
|
||||
exclude_kernel: bool = false,
|
||||
/// ditto hypervisor
|
||||
exclude_hv: bool = false,
|
||||
/// don't count when idle
|
||||
exclude_idle: bool = false,
|
||||
/// include mmap data
|
||||
mmap: bool = false,
|
||||
/// include comm data
|
||||
comm: bool = false,
|
||||
/// use freq, not period
|
||||
freq: bool = false,
|
||||
/// per task counts
|
||||
inherit_stat: bool = false,
|
||||
/// next exec enables
|
||||
enable_on_exec: bool = false,
|
||||
/// trace fork/exit
|
||||
task: bool = false,
|
||||
/// wakeup_watermark
|
||||
watermark: bool = false,
|
||||
/// precise_ip:
|
||||
///
|
||||
/// 0 - SAMPLE_IP can have arbitrary skid
|
||||
/// 1 - SAMPLE_IP must have constant skid
|
||||
/// 2 - SAMPLE_IP requested to have 0 skid
|
||||
/// 3 - SAMPLE_IP must have 0 skid
|
||||
///
|
||||
/// See also PERF_RECORD_MISC_EXACT_IP
|
||||
/// skid constraint
|
||||
precise_ip: u2 = 0,
|
||||
/// non-exec mmap data
|
||||
mmap_data: bool = false,
|
||||
/// sample_type all events
|
||||
sample_id_all: bool = false,
|
||||
|
||||
/// don't count in host
|
||||
exclude_host: bool = false,
|
||||
/// don't count in guest
|
||||
exclude_guest: bool = false,
|
||||
|
||||
/// exclude kernel callchains
|
||||
exclude_callchain_kernel: bool = false,
|
||||
/// exclude user callchains
|
||||
exclude_callchain_user: bool = false,
|
||||
/// include mmap with inode data
|
||||
mmap2: bool = false,
|
||||
/// flag comm events that are due to an exec
|
||||
comm_exec: bool = false,
|
||||
/// use @clockid for time fields
|
||||
use_clockid: bool = false,
|
||||
/// context switch data
|
||||
context_switch: bool = false,
|
||||
/// Write ring buffer from end to beginning
|
||||
write_backward: bool = false,
|
||||
/// include namespaces data
|
||||
namespaces: bool = false,
|
||||
|
||||
__reserved_1: u35 = 0,
|
||||
} = .{},
|
||||
/// wakeup every n events, or
|
||||
/// bytes before wakeup
|
||||
wakeup_events_or_watermark: u32 = 0,
|
||||
|
||||
bp_type: u32 = 0,
|
||||
|
||||
/// This field is also used for:
|
||||
/// bp_addr
|
||||
/// kprobe_func for perf_kprobe
|
||||
/// uprobe_path for perf_uprobe
|
||||
config1: u64 = 0,
|
||||
/// This field is also used for:
|
||||
/// bp_len
|
||||
/// kprobe_addr when kprobe_func == null
|
||||
/// probe_offset for perf_[k,u]probe
|
||||
config2: u64 = 0,
|
||||
|
||||
/// enum perf_branch_sample_type
|
||||
branch_sample_type: u64 = 0,
|
||||
|
||||
/// Defines set of user regs to dump on samples.
|
||||
/// See asm/perf_regs.h for details.
|
||||
sample_regs_user: u64 = 0,
|
||||
|
||||
/// Defines size of the user stack to dump on samples.
|
||||
sample_stack_user: u32 = 0,
|
||||
|
||||
clockid: i32 = 0,
|
||||
/// Defines set of regs to dump for each sample
|
||||
/// state captured on:
|
||||
/// - precise = 0: PMU interrupt
|
||||
/// - precise > 0: sampled instruction
|
||||
///
|
||||
/// See asm/perf_regs.h for details.
|
||||
sample_regs_intr: u64 = 0,
|
||||
|
||||
/// Wakeup watermark for AUX area
|
||||
aux_watermark: u32 = 0,
|
||||
sample_max_stack: u16 = 0,
|
||||
/// Align to u64
|
||||
__reserved_2: u16 = 0,
|
||||
};
|
||||
|
||||
pub const PERF = struct {
|
||||
pub const TYPE = enum(u32) {
|
||||
HARDWARE,
|
||||
SOFTWARE,
|
||||
TRACEPOINT,
|
||||
HW_CACHE,
|
||||
RAW,
|
||||
BREAKPOINT,
|
||||
MAX,
|
||||
};
|
||||
|
||||
pub const COUNT = struct {
|
||||
pub const HW = enum(u32) {
|
||||
CPU_CYCLES,
|
||||
INSTRUCTIONS,
|
||||
CACHE_REFERENCES,
|
||||
CACHE_MISSES,
|
||||
BRANCH_INSTRUCTIONS,
|
||||
BRANCH_MISSES,
|
||||
BUS_CYCLES,
|
||||
STALLED_CYCLES_FRONTEND,
|
||||
STALLED_CYCLES_BACKEND,
|
||||
REF_CPU_CYCLES,
|
||||
MAX,
|
||||
|
||||
pub const CACHE = enum(u32) {
|
||||
L1D,
|
||||
L1I,
|
||||
LL,
|
||||
DTLB,
|
||||
ITLB,
|
||||
BPU,
|
||||
NODE,
|
||||
MAX,
|
||||
|
||||
pub const OP = enum(u32) {
|
||||
READ,
|
||||
WRITE,
|
||||
PREFETCH,
|
||||
MAX,
|
||||
};
|
||||
|
||||
pub const RESULT = enum(u32) {
|
||||
ACCESS,
|
||||
MISS,
|
||||
MAX,
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
pub const SW = enum(u32) {
|
||||
CPU_CLOCK,
|
||||
TASK_CLOCK,
|
||||
PAGE_FAULTS,
|
||||
CONTEXT_SWITCHES,
|
||||
CPU_MIGRATIONS,
|
||||
PAGE_FAULTS_MIN,
|
||||
PAGE_FAULTS_MAJ,
|
||||
ALIGNMENT_FAULTS,
|
||||
EMULATION_FAULTS,
|
||||
DUMMY,
|
||||
BPF_OUTPUT,
|
||||
MAX,
|
||||
};
|
||||
};
|
||||
|
||||
pub const SAMPLE = struct {
|
||||
pub const IP = 1;
|
||||
pub const TID = 2;
|
||||
pub const TIME = 4;
|
||||
pub const ADDR = 8;
|
||||
pub const READ = 16;
|
||||
pub const CALLCHAIN = 32;
|
||||
pub const ID = 64;
|
||||
pub const CPU = 128;
|
||||
pub const PERIOD = 256;
|
||||
pub const STREAM_ID = 512;
|
||||
pub const RAW = 1024;
|
||||
pub const BRANCH_STACK = 2048;
|
||||
pub const REGS_USER = 4096;
|
||||
pub const STACK_USER = 8192;
|
||||
pub const WEIGHT = 16384;
|
||||
pub const DATA_SRC = 32768;
|
||||
pub const IDENTIFIER = 65536;
|
||||
pub const TRANSACTION = 131072;
|
||||
pub const REGS_INTR = 262144;
|
||||
pub const PHYS_ADDR = 524288;
|
||||
pub const MAX = 1048576;
|
||||
|
||||
pub const BRANCH = struct {
|
||||
pub const USER = 1 << 0;
|
||||
pub const KERNEL = 1 << 1;
|
||||
pub const HV = 1 << 2;
|
||||
pub const ANY = 1 << 3;
|
||||
pub const ANY_CALL = 1 << 4;
|
||||
pub const ANY_RETURN = 1 << 5;
|
||||
pub const IND_CALL = 1 << 6;
|
||||
pub const ABORT_TX = 1 << 7;
|
||||
pub const IN_TX = 1 << 8;
|
||||
pub const NO_TX = 1 << 9;
|
||||
pub const COND = 1 << 10;
|
||||
pub const CALL_STACK = 1 << 11;
|
||||
pub const IND_JUMP = 1 << 12;
|
||||
pub const CALL = 1 << 13;
|
||||
pub const NO_FLAGS = 1 << 14;
|
||||
pub const NO_CYCLES = 1 << 15;
|
||||
pub const TYPE_SAVE = 1 << 16;
|
||||
pub const MAX = 1 << 17;
|
||||
};
|
||||
};
|
||||
|
||||
pub const FLAG = struct {
|
||||
pub const FD_NO_GROUP = 1 << 0;
|
||||
pub const FD_OUTPUT = 1 << 1;
|
||||
pub const PID_CGROUP = 1 << 2;
|
||||
pub const FD_CLOEXEC = 1 << 3;
|
||||
};
|
||||
|
||||
pub const EVENT_IOC = struct {
|
||||
pub const ENABLE = 9216;
|
||||
pub const DISABLE = 9217;
|
||||
pub const REFRESH = 9218;
|
||||
pub const RESET = 9219;
|
||||
pub const PERIOD = 1074275332;
|
||||
pub const SET_OUTPUT = 9221;
|
||||
pub const SET_FILTER = 1074275334;
|
||||
pub const SET_BPF = 1074013192;
|
||||
pub const PAUSE_OUTPUT = 1074013193;
|
||||
pub const QUERY_BPF = 3221758986;
|
||||
pub const MODIFY_ATTRIBUTES = 1074275339;
|
||||
};
|
||||
|
||||
pub const IOC_FLAG_GROUP = 1;
|
||||
};
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user