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/* Copyright (c) 2013, 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 msm: perf: add debug patch logging framework\n"
"1 Perf: Restore counter after powercollapse for generic ARM PMU's\n"
"2 Perf: Toggle PMU IRQ when CPU's are hotplugged\n"
"3 Perf: Correct irq for CPU hotplug detection\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 msm_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(msm_perf_debugfs_init);
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