sábado, 26 de abril de 2008
Kernel hacking
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Kernel hacking ───────────────────────────
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[*] Show timing information on printks
[*] Magic SysRq key
[*] Enable unused/obsolete exported symbols
[*] Kernel debugging
(15) Kernel log buffer size (16 => 64KB, 17 => 128KB)
[*] Detect Soft Lockups (NEW)
[*] Collect scheduler statistics
[*] Debug slab memory allocations
[*] Memory leak debugging
[*] RT Mutex debugging, deadlock detection
[*] Built-in scriptable tester for rt-mutexes
--- Spinlock and rw-lock debugging: basic checks
--- Mutex debugging: basic checks
--- RW-sem debugging: basic checks
--- Lock debugging: detect incorrect freeing of live locks
[*] Lock debugging: prove locking correctness
[*] Lock dependency engine debugging
[*] Spinlock debugging: sleep-inside-spinlock checking
[*] Locking API boot-time self-tests
[*] kobject debugging
[*] Highmem debugging
[*] Verbose BUG() reporting (adds 70K)
[*] Compile the kernel with debug info
--- Debug Filesystem
[*] Debug VM
--- Compile the kernel with frame pointers
[*] Compile the kernel with frame unwind information
[*] Stack unwind support
[*] Force gcc to inline functions marked 'inline' (NEW)
<M> torture tests for RCU
[*] Early printk
[*] Check for stack overflows
[*] Stack utilization instrumentation
--- Page alloc debug is incompatible with Software Suspend on i386
[*] Write protect kernel read-only data structures
[*] Use 4Kb for kernel stacks instead of 8Kb
[*] Enable doublefault exception handler
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