81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/types.h>
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#include <linux/uaccess.h>
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#include <linux/debugfs.h>
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/*
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* Subsequent patches should add an entry to end of this string.
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* Format is incrementing sequence number followed by text of
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* patch commit title with newline.
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* Note trailing ';' is on its own line to simplify addition of
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* future strings.
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*/
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static char *descriptions =
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" 0 arm64: perf: add debug patch logging framework\n"
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" 1 Perf: arm64: Add L1 counters to tracepoints\n"
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" 2 Perf: arm64: add support for msm8994v1 irq\n"
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" 3 Perf: arm64: enable cti workaround\n"
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" 4 Perf: arm64: support hotplug and power collapse\n"
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" 5 Perf: arm64: add perf user-mode permissions\n"
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" 6 Perf: arm64: Add debugfs node to clear PMU\n"
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" 7 Perf: arm64: Update PMU force reset\n"
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" 8 Perf: arm64: Use device tree property for CTI PMU workaround\n"
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" 9 Perf: arm64: make request irq pmu-dependent\n"
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"10 Perf: arm64: tracectr: initialize counts after hotplug\n"
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"11 Perf: arm64: Refine disable/enable in tracecounters\n"
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"12 Perf: arm64: fix disable of pmu irq during hotplug\n"
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"13 Perf: arm64: restore registers after reset\n"
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"14 Perf: arm64: stop counters when going into hotplug\n"
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"15 Perf: arm64: make debug dir handle exportable\n"
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"16 Perf: arm64: add perf trace user\n"
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;
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static ssize_t desc_read(struct file *fp, char __user *buf,
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size_t count, loff_t *pos)
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{
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return simple_read_from_buffer(buf, count, pos, descriptions,
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strlen(descriptions));
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}
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static const struct file_operations perf_debug_desc_fops = {
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.read = desc_read,
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};
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static int perf_debugfs_init(void)
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{
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int ret = 0;
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struct dentry *dir;
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struct dentry *file;
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dir = debugfs_create_dir("msm-perf-patches", NULL);
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if (IS_ERR_OR_NULL(dir)) {
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pr_err("failed to create msm-perf-patches dir in debugfs\n");
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ret = PTR_ERR(dir);
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goto init_exit;
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}
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file = debugfs_create_file("descriptions", 0444, dir, NULL,
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&perf_debug_desc_fops);
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if (IS_ERR_OR_NULL(file)) {
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debugfs_remove(dir);
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pr_err("failed to create descriptions file for msm-perf-patches\n");
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ret = PTR_ERR(file);
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goto init_exit;
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}
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init_exit:
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return ret;
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}
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late_initcall(perf_debugfs_init);
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