917 	size_t cnt, loff_t *ppos)  in trace_get_user()  argument
931 	cnt--;  in trace_get_user()
939 		while (cnt && isspace(ch)) {  in trace_get_user()
944 			cnt--;  in trace_get_user()
958 	while (cnt && !isspace(ch)) {  in trace_get_user()
969 		cnt--;  in trace_get_user()
992 static ssize_t trace_seq_to_buffer(struct trace_seq *s, void *buf, size_t cnt)  in trace_seq_to_buffer()  argument
1000 	if (cnt > len)  in trace_seq_to_buffer()
1001 		cnt = len;  in trace_seq_to_buffer()
1002 	memcpy(buf, s->buffer + s->seq.readpos, cnt);  in trace_seq_to_buffer()
1004 	s->seq.readpos += cnt;  in trace_seq_to_buffer()
1005 	return cnt;  in trace_seq_to_buffer()
3607 			size_t cnt, loff_t *ppos)  in tracing_trace_options_write()  argument
3614 	if (cnt >= sizeof(buf))  in tracing_trace_options_write()
3617 	if (copy_from_user(&buf, ubuf, cnt))  in tracing_trace_options_write()
3620 	buf[cnt] = 0;  in tracing_trace_options_write()
3626 	*ppos += cnt;  in tracing_trace_options_write()
3628 	return cnt;  in tracing_trace_options_write()
3788 		       size_t cnt, loff_t *ppos)  in tracing_readme_read()  argument
3790 	return simple_read_from_buffer(ubuf, cnt, ppos,  in tracing_readme_read()
3878 				 size_t cnt, loff_t *ppos)  in tracing_saved_cmdlines_size_read()  argument
3887 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in tracing_saved_cmdlines_size_read()
3921 				  size_t cnt, loff_t *ppos)  in tracing_saved_cmdlines_size_write()  argument
3926 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in tracing_saved_cmdlines_size_write()
3938 	*ppos += cnt;  in tracing_saved_cmdlines_size_write()
3940 	return cnt;  in tracing_saved_cmdlines_size_write()
4127 		       size_t cnt, loff_t *ppos)  in tracing_set_trace_read()  argument
4137 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in tracing_set_trace_read()
4431 			size_t cnt, loff_t *ppos)  in tracing_set_trace_write()  argument
4439 	ret = cnt;  in tracing_set_trace_write()
4441 	if (cnt > MAX_TRACER_SIZE)  in tracing_set_trace_write()
4442 		cnt = MAX_TRACER_SIZE;  in tracing_set_trace_write()
4444 	if (copy_from_user(&buf, ubuf, cnt))  in tracing_set_trace_write()
4447 	buf[cnt] = 0;  in tracing_set_trace_write()
4450 	for (i = cnt - 1; i > 0 && isspace(buf[i]); i--)  in tracing_set_trace_write()
4464 		   size_t cnt, loff_t *ppos)  in tracing_nsecs_read()  argument
4473 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in tracing_nsecs_read()
4478 		    size_t cnt, loff_t *ppos)  in tracing_nsecs_write()  argument
4483 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in tracing_nsecs_write()
4489 	return cnt;  in tracing_nsecs_write()
4494 		    size_t cnt, loff_t *ppos)  in tracing_thresh_read()  argument
4496 	return tracing_nsecs_read(&tracing_thresh, ubuf, cnt, ppos);  in tracing_thresh_read()
4501 		     size_t cnt, loff_t *ppos)  in tracing_thresh_write()  argument
4507 	ret = tracing_nsecs_write(&tracing_thresh, ubuf, cnt, ppos);  in tracing_thresh_write()
4517 	ret = cnt;  in tracing_thresh_write()
4526 		     size_t cnt, loff_t *ppos)  in tracing_max_lat_read()  argument
4528 	return tracing_nsecs_read(filp->private_data, ubuf, cnt, ppos);  in tracing_max_lat_read()
4533 		      size_t cnt, loff_t *ppos)  in tracing_max_lat_write()  argument
4535 	return tracing_nsecs_write(filp->private_data, ubuf, cnt, ppos);  in tracing_max_lat_write()
4692 		  size_t cnt, loff_t *ppos)  in tracing_read_pipe()  argument
4698 	sret = trace_seq_to_user(&iter->seq, ubuf, cnt);  in tracing_read_pipe()
4711 		sret = iter->trace->read(iter, filp, ubuf, cnt, ppos);  in tracing_read_pipe()
4727 	if (cnt >= PAGE_SIZE)  in tracing_read_pipe()
4728 		cnt = PAGE_SIZE - 1;  in tracing_read_pipe()
4752 		if (trace_seq_used(&iter->seq) >= cnt)  in tracing_read_pipe()
4767 	sret = trace_seq_to_user(&iter->seq, ubuf, cnt);  in tracing_read_pipe()
4934 		     size_t cnt, loff_t *ppos)  in tracing_entries_read()  argument
4976 	ret = simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in tracing_entries_read()
4982 		      size_t cnt, loff_t *ppos)  in tracing_entries_write()  argument
4989 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in tracing_entries_write()
5003 	*ppos += cnt;  in tracing_entries_write()
5005 	return cnt;  in tracing_entries_write()
5010 				size_t cnt, loff_t *ppos)  in tracing_total_entries_read()  argument
5029 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in tracing_total_entries_read()
5034 			  size_t cnt, loff_t *ppos)  in tracing_free_buffer_write()  argument
5041 	*ppos += cnt;  in tracing_free_buffer_write()
5043 	return cnt;  in tracing_free_buffer_write()
5064 					size_t cnt, loff_t *fpos)  in tracing_mark_write()  argument
5088 	if (cnt > TRACE_BUF_SIZE)  in tracing_mark_write()
5089 		cnt = TRACE_BUF_SIZE;  in tracing_mark_write()
5108 	if ((addr & PAGE_MASK) != ((addr + cnt) & PAGE_MASK))  in tracing_mark_write()
5126 	size = sizeof(*entry) + cnt + 2; /* possible \n added */  in tracing_mark_write()
5142 		memcpy(&entry->buf[len], map_page[1], cnt - len);  in tracing_mark_write()
5144 		memcpy(&entry->buf, map_page[0] + offset, cnt);  in tracing_mark_write()
5146 	if (entry->buf[cnt - 1] != '\n') {  in tracing_mark_write()
5147 		entry->buf[cnt] = '\n';  in tracing_mark_write()
5148 		entry->buf[cnt + 1] = '\0';  in tracing_mark_write()
5150 		entry->buf[cnt] = '\0';  in tracing_mark_write()
5154 	written = cnt;  in tracing_mark_write()
5217 				   size_t cnt, loff_t *fpos)  in tracing_clock_write()  argument
5225 	if (cnt >= sizeof(buf))  in tracing_clock_write()
5228 	if (copy_from_user(&buf, ubuf, cnt))  in tracing_clock_write()
5231 	buf[cnt] = 0;  in tracing_clock_write()
5239 	*fpos += cnt;  in tracing_clock_write()
5241 	return cnt;  in tracing_clock_write()
5310 tracing_snapshot_write(struct file *filp, const char __user *ubuf, size_t cnt,  in tracing_snapshot_write()  argument
5323 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in tracing_snapshot_write()
5375 		*ppos += cnt;  in tracing_snapshot_write()
5376 		ret = cnt;  in tracing_snapshot_write()
5839 	unsigned long cnt;  in tracing_stats_read()  local
5849 	cnt = ring_buffer_entries_cpu(trace_buf->buffer, cpu);  in tracing_stats_read()
5850 	trace_seq_printf(s, "entries: %ld\n", cnt);  in tracing_stats_read()
5852 	cnt = ring_buffer_overrun_cpu(trace_buf->buffer, cpu);  in tracing_stats_read()
5853 	trace_seq_printf(s, "overrun: %ld\n", cnt);  in tracing_stats_read()
5855 	cnt = ring_buffer_commit_overrun_cpu(trace_buf->buffer, cpu);  in tracing_stats_read()
5856 	trace_seq_printf(s, "commit overrun: %ld\n", cnt);  in tracing_stats_read()
5858 	cnt = ring_buffer_bytes_cpu(trace_buf->buffer, cpu);  in tracing_stats_read()
5859 	trace_seq_printf(s, "bytes: %ld\n", cnt);  in tracing_stats_read()
5880 	cnt = ring_buffer_dropped_events_cpu(trace_buf->buffer, cpu);  in tracing_stats_read()
5881 	trace_seq_printf(s, "dropped events: %ld\n", cnt);  in tracing_stats_read()
5883 	cnt = ring_buffer_read_events_cpu(trace_buf->buffer, cpu);  in tracing_stats_read()
5884 	trace_seq_printf(s, "read events: %ld\n", cnt);  in tracing_stats_read()
5910 		  size_t cnt, loff_t *ppos)  in tracing_read_dyn_info()  argument
5925 	r = simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in tracing_read_dyn_info()
6145 trace_options_read(struct file *filp, char __user *ubuf, size_t cnt,  in trace_options_read()  argument
6156 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, 2);  in trace_options_read()
6160 trace_options_write(struct file *filp, const char __user *ubuf, size_t cnt,  in trace_options_write()  argument
6167 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in trace_options_write()
6183 	*ppos += cnt;  in trace_options_write()
6185 	return cnt;  in trace_options_write()
6197 trace_options_core_read(struct file *filp, char __user *ubuf, size_t cnt,  in trace_options_core_read()  argument
6208 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, 2);  in trace_options_core_read()
6212 trace_options_core_write(struct file *filp, const char __user *ubuf, size_t cnt,  in trace_options_core_write()  argument
6220 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in trace_options_core_write()
6234 	*ppos += cnt;  in trace_options_core_write()
6236 	return cnt;  in trace_options_core_write()
6309 	int cnt;  in create_trace_option_files()  local
6321 	for (cnt = 0; opts[cnt].name; cnt++)  in create_trace_option_files()
6324 	topts = kcalloc(cnt + 1, sizeof(*topts), GFP_KERNEL);  in create_trace_option_files()
6328 	for (cnt = 0; opts[cnt].name; cnt++)  in create_trace_option_files()
6329 		create_trace_option_file(tr, &topts[cnt], flags,  in create_trace_option_files()
6330 					 &opts[cnt]);  in create_trace_option_files()
6338 	int cnt;  in destroy_trace_option_files()  local
6343 	for (cnt = 0; topts[cnt].opt; cnt++)  in destroy_trace_option_files()
6344 		tracefs_remove(topts[cnt].entry);  in destroy_trace_option_files()
6378 	       size_t cnt, loff_t *ppos)  in rb_simple_read()  argument
6387 	return simple_read_from_buffer(ubuf, cnt, ppos, buf, r);  in rb_simple_read()
6392 		size_t cnt, loff_t *ppos)  in rb_simple_write()  argument
6399 	ret = kstrtoul_from_user(ubuf, cnt, 10, &val);  in rb_simple_write()
6419 	return cnt;  in rb_simple_write()
6971 	int cnt = 0, cpu;  in ftrace_dump()  local
7034 		if (!cnt)  in ftrace_dump()
7037 		cnt++;  in ftrace_dump()
7058 	if (!cnt)  in ftrace_dump()