tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/ftrace/test.d/ftrace/func_profile_stat.tc

Extension

.tc

Size

585 bytes

Lines

22

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.

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

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: ftrace - function profiling
# requires: function_profile_enabled

: "Enable function profile"
echo 1 > function_profile_enabled

: "Profile must be updated"
cp trace_stat/function0 $TMPDIR/
( echo "forked"; sleep 1 )
: "diff returns 0 if there is no difference"
! diff trace_stat/function0 $TMPDIR/function0

echo 0 > function_profile_enabled

: "Profile must NOT be updated"
cp trace_stat/function0 $TMPDIR/
( echo "forked"; sleep 1 )
: "diff returns 0 if there is no difference"
diff trace_stat/function0 $TMPDIR/function0

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.