1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/types.h>
#include <linux/uaccess.h>
#include <linux/debugfs.h>
/*
* Subsequent patches should add an entry to end of this string.
* Format is incrementing sequence number followed by text of
* patch commit title with newline.
* Note trailing ';' is on its own line to simplify addition of
* future strings.
*/
static char *descriptions =
" 0 arm64: perf: add debug patch logging framework\n"
" 1 Perf: arm64: Add L1 counters to tracepoints\n"
" 5 Perf: arm64: add perf user-mode permissions\n"
" 6 Perf: arm64: Add debugfs node to clear PMU\n"
" 7 Perf: arm64: Update PMU force reset\n"
"10 Perf: arm64: tracectr: initialize counts after hotplug\n"
"11 Perf: arm64: Refine disable/enable in tracecounters\n"
"15 Perf: arm64: make debug dir handle exportable\n"
"16 Perf: arm64: add perf trace user\n"
"17 Perf: arm64: add support for kryo pmu\n"
;
static ssize_t desc_read(struct file *fp, char __user *buf,
size_t count, loff_t *pos)
{
return simple_read_from_buffer(buf, count, pos, descriptions,
strlen(descriptions));
}
static const struct file_operations perf_debug_desc_fops = {
.read = desc_read,
};
static int perf_debugfs_init(void)
{
int ret = 0;
struct dentry *dir;
struct dentry *file;
dir = debugfs_create_dir("msm-perf-patches", NULL);
if (IS_ERR_OR_NULL(dir)) {
pr_err("failed to create msm-perf-patches dir in debugfs\n");
ret = PTR_ERR(dir);
goto init_exit;
}
file = debugfs_create_file("descriptions", 0444, dir, NULL,
&perf_debug_desc_fops);
if (IS_ERR_OR_NULL(file)) {
debugfs_remove(dir);
pr_err("failed to create descriptions file for msm-perf-patches\n");
ret = PTR_ERR(file);
goto init_exit;
}
init_exit:
return ret;
}
late_initcall(perf_debugfs_init);
|
