Module debug_cfg 

Centralised debug configuration.

All global toggles and knobs that control debug output, diagnostic behaviour, or temporary workarounds live here. When a debug feature is no longer needed, simply flip the default to false : no other code changes required.

Future additions

• TRACE_SYSCALLS: log every syscall entry/exit
• TRACE_CONTEXT_SWITCH: log every task switch
• VGA_DEBUG_LIVE: real-time VGA framebuffer output (already here)
• PANIC_SCREENSHOT: dump framebuffer to serial on panic
• LOG_MM: trace memory allocations

Statics

VGA_DEBUG_BUFFER

When true (default), log lines are also written into the lock-free circular buffer (vgabuf) for async display by the status line task.

VGA_DEBUG_LIVE

When true, every log::info! / log::warn! / etc. is drawn directly to the VGA framebuffer in real time (pixel by pixel, no buffering).

Functions

is_vga_debug_buffer

Returns true if buffered VGA output is enabled.

is_vga_debug_live

Returns true if live VGA debug output is enabled.

set_vga_debug_buffer

Enable or disable buffered VGA output.

set_vga_debug_live

Enable or disable live VGA debug output.