| /* Copyright (c) 2013-2014, 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: port perf-events to 3.10 kernel\n" |
| " 2 Perf: keep events across hotplug\n" |
| " 3 Perf: bring CPU online if needed when disabling irq\n" |
| " 4 Perf: Support sw events across hotplug\n" |
| " 5 msm: perf: initialise krait perf L2 counter enables\n" |
| " 6 msm: perf: clean up duplicate constraint events\n" |
| " 7 Perf: Add L1 counters to tracepoints\n" |
| " 8 Perf: Make per-process counters configurable\n" |
| " 9 msm: perf: Add L2 support for tracecounters\n" |
| "10 ARM: dts: msm: add perf-events support for apq8084\n" |
| "11 ARM: dts: msm: add perf-events support for msmsamarium\n" |
| "12 Perf: Make per-process counters cumulative\n" |
| "13 Perf: Fix PID for tracepoints\n" |
| "14 Perf: preserve registers across hotplug\n" |
| "15 msm: perf: Fix cpu id logic in tracectr notifier\n" |
| "16 msm: perf: tracectr: Initialize cnts after hotplug\n" |
| "17 Perf: Reset pmu after hotplug\n" |
| "18 ARM: dts: msm: add perf-events support for msm8916\n" |
| "19 Perf: Enable pmuv3 on 32 bit kernel\n" |
| "20 msm: perf: set filter bits for cycle counter on krait\n" |
| "21 Perf: Fix hrtimer operation across hotplug\n" |
| "22 Perf: add perf user-mode permissions\n" |
| "23 Perf: Add event type check in hrtimer hotplug fix\n" |
| "24 Perf: Add debugfs node to clear PMU\n" |
| "25 msm: perf: reset perf cycle counter on krait\n" |
| "26 Perf: interrupt disable without bringing cpus up\n" |
| "27 Perf: stop counters when going into hotplug\n" |
| "28 ARM: dts: msm: add perf-events support for msm8909\n" |
| "29 msm: perf: Refine disable/enable in tracecounters\n" |
| "30 Perf: reset pmu enables when starting perf\n" |
| "31 Perf: make debug dir handle exportable\n" |
| "32 msm: perf: add perf trace user\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); |