ptrace_dr7 473 arch/x86/include/asm/processor.h unsigned long ptrace_dr7; ptrace_dr7 408 arch/x86/kernel/hw_breakpoint.c t->ptrace_dr7 = 0; ptrace_dr7 629 arch/x86/kernel/ptrace.c val = thread->ptrace_dr7; ptrace_dr7 688 arch/x86/kernel/ptrace.c thread->ptrace_dr7 = val;