x86/debug: Remove aout_dump_debugregs() (b84d42b6) · Commits · 戴 / test

arch/x86/include/asm/debugreg.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -90,8 +90,6 @@ static __always_inline bool hw_breakpoint_active(void)
		return __this_cpu_read(cpu_dr7) & DR_GLOBAL_ENABLE_MASK;
		}

		extern void aout_dump_debugregs(struct user *dump);

		extern void hw_breakpoint_restore(void);

		static __always_inline unsigned long local_db_save(void)

+0 −36

Original line number	Diff line number	Diff line
		@@ -441,42 +441,6 @@ int hw_breakpoint_arch_parse(struct perf_event *bp,
		return 0;
		}

		/*
		* Dump the debug register contents to the user.
		* We can't dump our per cpu values because it
		* may contain cpu wide breakpoint, something that
		* doesn't belong to the current task.
		*
		* TODO: include non-ptrace user breakpoints (perf)
		*/
		void aout_dump_debugregs(struct user *dump)
		{
		int i;
		int dr7 = 0;
		struct perf_event *bp;
		struct arch_hw_breakpoint *info;
		struct thread_struct *thread = &current->thread;

		for (i = 0; i < HBP_NUM; i++) {
		bp = thread->ptrace_bps[i];

		if (bp && !bp->attr.disabled) {
		dump->u_debugreg[i] = bp->attr.bp_addr;
		info = counter_arch_bp(bp);
		dr7 \|= encode_dr7(i, info->len, info->type);
		} else {
		dump->u_debugreg[i] = 0;
		}
		}

		dump->u_debugreg[4] = 0;
		dump->u_debugreg[5] = 0;
		dump->u_debugreg[6] = current->thread.debugreg6;

		dump->u_debugreg[7] = dr7;
		}
		EXPORT_SYMBOL_GPL(aout_dump_debugregs);

		/*
		* Release the user breakpoints used by ptrace
		*/