tools/perf/scripts/python/intel-pt-events.py

File Facts

System

Linux kernel

Corpus path

tools/perf/scripts/python/intel-pt-events.py

Extension

.py

Size

14636 bytes

Lines

495

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: tools

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

def context_switch(ts, cpu, pid, tid, np_pid, np_tid, machine_pid, out, out_preempt, *x):
	if glb_args.interleave:
		flush_stashed_output()
	if out:
		out_str = "Switch out "
	else:
		out_str = "Switch In  "
	if out_preempt:
		preempt_str = "preempt"
	else:
		preempt_str = ""
	if len(x) >= 2 and x[0]:
		machine_pid = x[0]
		vcpu = x[1]
	else:
		vcpu = None;
	if machine_pid == -1:
		machine_str = ""
	elif vcpu is None:
		machine_str = "machine PID %d" % machine_pid
	else:
		machine_str = "machine PID %d VCPU %d" % (machine_pid, vcpu)
	switch_str = "%16s %5d/%-5d [%03u] %9u.%09u %5d/%-5d %s %s" % \
		(out_str, pid, tid, cpu, ts / 1000000000, ts %1000000000, np_pid, np_tid, machine_str, preempt_str)
	if glb_args.all_switch_events:
		print(switch_str)
	else:
		global glb_switch_str
		glb_switch_str[cpu] = switch_str

Annotation

• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.