Search for kernel code using hybrid search across all indexed data.

Args: query: The search query string. repo: Optional repository to filter by. subsystem: Optional subsystem to filter by. limit: Maximum number of results to return.

Returns: Dictionary containing results and correlated evidence sources.

Look up a specific symbol (function, struct, macro) in kernel source.

Args: name: The name of the symbol to look up. kind: Optional kind of symbol (e.g., 'function', 'struct'). repo: Optional repository to filter by.

Returns: Dictionary containing location, definition, and evidence sources.

Search kernel git commits by message, author, or subsystem.

Args: query: Keywords to search in commit messages. author: Optional author filter. file_path: Optional file path filter. subsystem: Optional subsystem filter. limit: Max number of commits to return.

Returns: Dictionary with matching commits and evidence sources.

Retrieve detailed metadata for a specific kernel commit SHA.

Args: sha: Complete or prefix commit SHA. repo: Optional repository name filter.

Returns: Dictionary with commit metadata and evidence sources.

Get commit history and symbol evolution for a kernel file path.

Args: file_path: Relative file path in kernel tree. repo: Optional repository filter. limit: Max commits to return.

Returns: Dictionary with file commit history and evidence sources.

Get commit attribution for a specific line range in a file.

Args: file_path: Relative file path in kernel tree. start_line: Starting line number (1-indexed). end_line: Ending line number. repo: Optional repository filter.

Returns: Dictionary with line range attributions and evidence sources.

Search submitted kernel patches by query, submitter, or state.

Args: query: Search terms for patch name. submitter: Optional submitter filter. state: Optional patch state filter. subsystem: Optional subsystem filter. limit: Max results.

Returns: Dictionary of matching patches and evidence sources.

Retrieve full metadata and state transition history for a patch.

Args: patch_id: Patchwork message/patch ID.

Returns: Dictionary with patch details, history, and evidence sources.

Search Linux Kernel Mailing List threads by subject or excerpt.

Args: query: Search keywords. subsystem: Optional subsystem filter. author: Optional from_addr filter. limit: Max results.

Returns: Dictionary with matching threads and evidence sources.

Retrieve full details and body excerpt for an LKML thread.

Args: message_id: Email message ID of the thread.

Returns: Dictionary with thread metadata and evidence sources.

Analyze a series of kernel patches for risks, subsystems, and evidence.

Args: patches: Sequence of patch dictionaries containing name/diff_content. subsystem_hint: Optional initial subsystem assumption.

Returns: Dictionary with analysis summary, risk flags, and evidence sources.

Search kernel documentation files by query or subsystem.

Args: query: Keywords to search in document titles and headings. subsystem: Optional subsystem filter (e.g. 'net', 'mm'). limit: Maximum number of documentation results to return.

Returns: Dictionary containing matching 'docs' list and 'evidence_sources'.

Retrieve full content and section headings for a kernel document.

Args: doc_id: Document file path (e.g. Documentation/net/core.rst).

Returns: Dictionary containing document title, sections, and evidence_sources.

Search Linux Weekly News (LWN) articles on kernel development.

Args: query: Keywords to search in article titles and body. subsystem: Optional subsystem filter (e.g. 'mm', 'sched'). limit: Maximum number of articles to return.

Returns: Dictionary containing 'articles' list and 'evidence_sources'.

Retrieve full details and symbol references for an LWN article.

Args: article_id: Unique LWN article ID (e.g. LWN-900100).

Returns: Dictionary containing article title, author, body, and evidence_sources.

Analyze overall engineering risk and stability for a kernel subsystem.

Args: subsystem: Kernel subsystem identifier (e.g. 'mm', 'sched', 'net'). time_range: Time period for analysis (default: '30d').

Returns: Dictionary containing risk_score, stability_rating, risk_factors, hardware_validation_required, summary, and evidence_sources.