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https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-30 15:48:52 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
275
drivers/gpu/drm/msm/msm_perf.c
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275
drivers/gpu/drm/msm/msm_perf.c
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/*
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* For profiling, userspace can:
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*
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* tail -f /sys/kernel/debug/dri/<minor>/gpu
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*
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* This will enable performance counters/profiling to track the busy time
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* and any gpu specific performance counters that are supported.
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*/
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#ifdef CONFIG_DEBUG_FS
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#include <linux/debugfs.h>
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#include "msm_drv.h"
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#include "msm_gpu.h"
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struct msm_perf_state {
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struct drm_device *dev;
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bool open;
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int cnt;
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struct mutex read_lock;
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char buf[256];
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int buftot, bufpos;
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unsigned long next_jiffies;
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struct dentry *ent;
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struct drm_info_node *node;
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};
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#define SAMPLE_TIME (HZ/4)
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/* wait for next sample time: */
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static int wait_sample(struct msm_perf_state *perf)
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{
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unsigned long start_jiffies = jiffies;
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if (time_after(perf->next_jiffies, start_jiffies)) {
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unsigned long remaining_jiffies =
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perf->next_jiffies - start_jiffies;
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int ret = schedule_timeout_interruptible(remaining_jiffies);
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if (ret > 0) {
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/* interrupted */
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return -ERESTARTSYS;
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}
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}
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perf->next_jiffies += SAMPLE_TIME;
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return 0;
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}
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static int refill_buf(struct msm_perf_state *perf)
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{
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struct msm_drm_private *priv = perf->dev->dev_private;
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struct msm_gpu *gpu = priv->gpu;
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char *ptr = perf->buf;
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int rem = sizeof(perf->buf);
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int i, n;
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if ((perf->cnt++ % 32) == 0) {
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/* Header line: */
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n = snprintf(ptr, rem, "%%BUSY");
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ptr += n;
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rem -= n;
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for (i = 0; i < gpu->num_perfcntrs; i++) {
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const struct msm_gpu_perfcntr *perfcntr = &gpu->perfcntrs[i];
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n = snprintf(ptr, rem, "\t%s", perfcntr->name);
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ptr += n;
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rem -= n;
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}
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} else {
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/* Sample line: */
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uint32_t activetime = 0, totaltime = 0;
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uint32_t cntrs[5];
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uint32_t val;
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int ret;
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/* sleep until next sample time: */
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ret = wait_sample(perf);
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if (ret)
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return ret;
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ret = msm_gpu_perfcntr_sample(gpu, &activetime, &totaltime,
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ARRAY_SIZE(cntrs), cntrs);
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if (ret < 0)
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return ret;
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val = totaltime ? 1000 * activetime / totaltime : 0;
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n = snprintf(ptr, rem, "%3d.%d%%", val / 10, val % 10);
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ptr += n;
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rem -= n;
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for (i = 0; i < ret; i++) {
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/* cycle counters (I think).. convert to MHz.. */
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val = cntrs[i] / 10000;
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n = snprintf(ptr, rem, "\t%5d.%02d",
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val / 100, val % 100);
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ptr += n;
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rem -= n;
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}
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}
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n = snprintf(ptr, rem, "\n");
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ptr += n;
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rem -= n;
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perf->bufpos = 0;
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perf->buftot = ptr - perf->buf;
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return 0;
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}
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static ssize_t perf_read(struct file *file, char __user *buf,
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size_t sz, loff_t *ppos)
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{
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struct msm_perf_state *perf = file->private_data;
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int n = 0, ret;
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mutex_lock(&perf->read_lock);
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if (perf->bufpos >= perf->buftot) {
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ret = refill_buf(perf);
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if (ret)
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goto out;
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}
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n = min((int)sz, perf->buftot - perf->bufpos);
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ret = copy_to_user(buf, &perf->buf[perf->bufpos], n);
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if (ret)
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goto out;
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perf->bufpos += n;
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*ppos += n;
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out:
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mutex_unlock(&perf->read_lock);
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if (ret)
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return ret;
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return n;
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}
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static int perf_open(struct inode *inode, struct file *file)
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{
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struct msm_perf_state *perf = inode->i_private;
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struct drm_device *dev = perf->dev;
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struct msm_drm_private *priv = dev->dev_private;
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struct msm_gpu *gpu = priv->gpu;
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int ret = 0;
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mutex_lock(&dev->struct_mutex);
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if (perf->open || !gpu) {
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ret = -EBUSY;
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goto out;
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}
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file->private_data = perf;
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perf->open = true;
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perf->cnt = 0;
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perf->buftot = 0;
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perf->bufpos = 0;
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msm_gpu_perfcntr_start(gpu);
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perf->next_jiffies = jiffies + SAMPLE_TIME;
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out:
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mutex_unlock(&dev->struct_mutex);
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return ret;
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}
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static int perf_release(struct inode *inode, struct file *file)
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{
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struct msm_perf_state *perf = inode->i_private;
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struct msm_drm_private *priv = perf->dev->dev_private;
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msm_gpu_perfcntr_stop(priv->gpu);
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perf->open = false;
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return 0;
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}
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static const struct file_operations perf_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = perf_open,
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.read = perf_read,
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.llseek = no_llseek,
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.release = perf_release,
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};
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int msm_perf_debugfs_init(struct drm_minor *minor)
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{
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struct msm_drm_private *priv = minor->dev->dev_private;
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struct msm_perf_state *perf;
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/* only create on first minor: */
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if (priv->perf)
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return 0;
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perf = kzalloc(sizeof(*perf), GFP_KERNEL);
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if (!perf)
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return -ENOMEM;
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perf->dev = minor->dev;
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mutex_init(&perf->read_lock);
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priv->perf = perf;
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perf->node = kzalloc(sizeof(*perf->node), GFP_KERNEL);
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if (!perf->node)
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goto fail;
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perf->ent = debugfs_create_file("perf", S_IFREG | S_IRUGO,
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minor->debugfs_root, perf, &perf_debugfs_fops);
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if (!perf->ent) {
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DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s/perf\n",
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minor->debugfs_root->d_name.name);
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goto fail;
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}
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perf->node->minor = minor;
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perf->node->dent = perf->ent;
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perf->node->info_ent = NULL;
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mutex_lock(&minor->debugfs_lock);
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list_add(&perf->node->list, &minor->debugfs_list);
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mutex_unlock(&minor->debugfs_lock);
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return 0;
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fail:
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msm_perf_debugfs_cleanup(minor);
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return -1;
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}
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void msm_perf_debugfs_cleanup(struct drm_minor *minor)
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{
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struct msm_drm_private *priv = minor->dev->dev_private;
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struct msm_perf_state *perf = priv->perf;
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if (!perf)
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return;
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priv->perf = NULL;
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debugfs_remove(perf->ent);
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if (perf->node) {
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mutex_lock(&minor->debugfs_lock);
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list_del(&perf->node->list);
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mutex_unlock(&minor->debugfs_lock);
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kfree(perf->node);
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}
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mutex_destroy(&perf->read_lock);
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kfree(perf);
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}
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#endif
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