sparc64: Remvoe set_fs() from perf_callchain_user(). (0f0a691f) · Commits · 戴 / test

arch/sparc/kernel/perf_event.c

+0 −5

Original line number	Diff line number	Diff line
		@@ -1849,16 +1849,12 @@ perf_callchain_user(struct perf_callchain_entry_ctx entry, struct pt_regs regs
		{
		u64 saved_fault_address = current_thread_info()->fault_address;
		u8 saved_fault_code = get_thread_fault_code();
		mm_segment_t old_fs;

		perf_callchain_store(entry, regs->tpc);

		if (!current->mm)
		return;

		old_fs = get_fs();
		set_fs(USER_DS);

		flushw_user();

		pagefault_disable();
		@@ -1870,7 +1866,6 @@ perf_callchain_user(struct perf_callchain_entry_ctx entry, struct pt_regs regs

		pagefault_enable();

		set_fs(old_fs);
		set_thread_fault_code(saved_fault_code);
		current_thread_info()->fault_address = saved_fault_address;
		}