_brk_start        138 arch/x86/kernel/setup.c static __initdata unsigned long _brk_start = (unsigned long)__brk_base;
_brk_start        259 arch/x86/kernel/setup.c 	BUG_ON(_brk_start == 0);
_brk_start        281 arch/x86/kernel/setup.c 	if (_brk_end > _brk_start)
_brk_start        282 arch/x86/kernel/setup.c 		memblock_reserve(__pa_symbol(_brk_start),
_brk_start        283 arch/x86/kernel/setup.c 				 _brk_end - _brk_start);
_brk_start        287 arch/x86/kernel/setup.c 	_brk_start = 0;