035e3e77ed
* This enables a mechanism to profile almost the complete boot process (starting with main2()), if SYSTEM_PROFILER is defined to 1. * You can access the profiling data using "profile -r".
144 lines
4.7 KiB
C
144 lines
4.7 KiB
C
#ifndef KERNEL_DEBUG_CONFIG_H
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#define KERNEL_DEBUG_CONFIG_H
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// Master switch:
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// 0: Disables all debug code that hasn't been enabled otherwise.
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// 1: Enables some lightweight debug code.
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// 2: Enables more debug code. Will impact performance.
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#define KDEBUG_LEVEL 2
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#define KDEBUG_LEVEL_2 (KDEBUG_LEVEL >= 2)
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#define KDEBUG_LEVEL_1 (KDEBUG_LEVEL >= 1)
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#define KDEBUG_LEVEL_0 (KDEBUG_LEVEL >= 0)
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// general kernel debugging
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// Enables kernel ASSERT()s and various checks, locking primitives aren't
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// benaphore-style.
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#define KDEBUG KDEBUG_LEVEL_2
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// Size of the heap used by the kernel debugger.
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#define KDEBUG_HEAP (64 * 1024)
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// Set to 0 to disable support for kernel breakpoints.
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#define KERNEL_BREAKPOINTS 1
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// Enables the debug syslog feature (accessing the previous syslog in the boot
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// loader) by default. Can be overridden in the boot loader menu.
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#define KDEBUG_ENABLE_DEBUG_SYSLOG KDEBUG_LEVEL_1
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// block/file cache
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// Enables debugger commands.
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#define DEBUG_BLOCK_CACHE KDEBUG_LEVEL_1
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// Enables checks that non-dirty blocks really aren't changed. Seriously
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// degrades performance when the block cache is used heavily.
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#define BLOCK_CACHE_DEBUG_CHANGED KDEBUG_LEVEL_2
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// Enables a global list of file maps and related debugger commands.
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#define DEBUG_FILE_MAP KDEBUG_LEVEL_1
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// heap / slab
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// Initialize newly allocated memory with something non zero.
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#define PARANOID_KERNEL_MALLOC KDEBUG_LEVEL_2
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// Check for double free, and fill freed memory with 0xdeadbeef.
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#define PARANOID_KERNEL_FREE KDEBUG_LEVEL_2
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// Validate sanity of the heap after each operation (slow!).
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#define PARANOID_HEAP_VALIDATION 0
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// Store size, thread and team info at the end of each allocation block.
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// Enables the "allocations*" debugger commands.
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#define KERNEL_HEAP_LEAK_CHECK 0
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// Enables the "allocations*" debugger commands for the slab.
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#define SLAB_ALLOCATION_TRACKING 0
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// interrupts
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// Adds statistics and unhandled counter per interrupts. Enables the "ints"
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// debugger command.
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#define DEBUG_INTERRUPTS KDEBUG_LEVEL_1
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// semaphores
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// Enables tracking of the last threads that acquired/released a semaphore.
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#define DEBUG_SEM_LAST_ACQUIRER KDEBUG_LEVEL_1
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// SMP
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// Enables spinlock caller debugging. When acquiring a spinlock twice on a
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// non-SMP machine, this will give a clue who locked it the first time.
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// Furthermore (also on SMP machines) the "spinlock" debugger command will be
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// available.
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#define DEBUG_SPINLOCKS KDEBUG_LEVEL_2
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#define DEBUG_SPINLOCK_LATENCIES 0
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// VM
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// Enables the vm_page::queue field, i.e. it is tracked which queue the page
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// should be in.
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#define DEBUG_PAGE_QUEUE 0
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// Enables the vm_page::access_count field, which is used to detect invalid
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// concurrent access to the page.
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#define DEBUG_PAGE_ACCESS KDEBUG_LEVEL_2
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// Enables a global list of all vm_cache structures.
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#define DEBUG_CACHE_LIST KDEBUG_LEVEL_1
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// Enables swap support.
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#define ENABLE_SWAP_SUPPORT 1
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// Use the selected allocator as generic memory allocator (malloc()/free()).
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#define USE_DEBUG_HEAP_FOR_MALLOC 0
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// Heap implementation with additional debugging facilities.
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#define USE_GUARDED_HEAP_FOR_MALLOC 0
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// Heap implementation that allocates memory so that the end of the
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// allocation always coincides with a page end and is followed by a guard
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// page which is marked non-present. Out of bounds access (both read and
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// write) therefore cause a crash (unhandled page fault). Note that this
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// allocator is neither speed nor space efficient, indeed it wastes huge
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// amounts of pages and address space so it is quite easy to hit limits.
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#define USE_SLAB_ALLOCATOR_FOR_MALLOC 1
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// Heap implementation based on the slab allocator (for production use).
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// Replace the object cache with the guarded heap to force debug features. Also
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// requires the use of the guarded heap for malloc.
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#define USE_GUARDED_HEAP_FOR_OBJECT_CACHE 0
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// Enables additional sanity checks in the slab allocator's memory manager.
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#define DEBUG_SLAB_MEMORY_MANAGER_PARANOID_CHECKS 0
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// Disables memory re-use in the guarded heap (freed memory is never reused and
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// stays invalid causing every access to crash). Note that this is a magnitude
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// more space inefficient than the guarded heap itself. Fully booting may not
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// work at all due to address space waste.
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#define DEBUG_GUARDED_HEAP_DISABLE_MEMORY_REUSE 0
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// When set limits the amount of available RAM (in MB).
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//#define LIMIT_AVAILABLE_MEMORY 256
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// Enables tracking of page allocations.
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#define VM_PAGE_ALLOCATION_TRACKING 0
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// Enables the (boot) system profiler for use with "profile -r"
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#define SYSTEM_PROFILER 0
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#define SYSTEM_PROFILE_SIZE 40 * 1024 * 1024
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#define SYSTEM_PROFILE_STACK_DEPTH 10
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#define SYSTEM_PROFILE_INTERVAL 10000
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#endif // KERNEL_DEBUG_CONFIG_H
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