Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 396 deletions

diff --git a/ANDROID_3.4.5/arch/powerpc/platforms/pseries/dtl.c b/ANDROID_3.4.5/arch/powerpc/platforms/pseries/dtl.c
deleted file mode 100644
index a7648543..00000000
--- a/ANDROID_3.4.5/arch/powerpc/platforms/pseries/dtl.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
- * Virtual Processor Dispatch Trace Log
- *
- * (C) Copyright IBM Corporation 2009
- *
- * Author: Jeremy Kerr <jk@ozlabs.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/debugfs.h>
-#include <linux/spinlock.h>
-#include <asm/smp.h>
-#include <asm/uaccess.h>
-#include <asm/firmware.h>
-#include <asm/lppaca.h>
-#include <asm/debug.h>
-
-#include "plpar_wrappers.h"
-
-struct dtl {
-	struct dtl_entry	*buf;
-	struct dentry		*file;
-	int			cpu;
-	int			buf_entries;
-	u64			last_idx;
-	spinlock_t		lock;
-};
-static DEFINE_PER_CPU(struct dtl, cpu_dtl);
-
-/*
- * Dispatch trace log event mask:
- * 0x7: 0x1: voluntary virtual processor waits
- *      0x2: time-slice preempts
- *      0x4: virtual partition memory page faults
- */
-static u8 dtl_event_mask = 0x7;
-
-
-/*
- * Size of per-cpu log buffers. Firmware requires that the buffer does
- * not cross a 4k boundary.
- */
-static int dtl_buf_entries = N_DISPATCH_LOG;
-
-#ifdef CONFIG_VIRT_CPU_ACCOUNTING
-struct dtl_ring {
-	u64	write_index;
-	struct dtl_entry *write_ptr;
-	struct dtl_entry *buf;
-	struct dtl_entry *buf_end;
-	u8	saved_dtl_mask;
-};
-
-static DEFINE_PER_CPU(struct dtl_ring, dtl_rings);
-
-static atomic_t dtl_count;
-
-/*
- * The cpu accounting code controls the DTL ring buffer, and we get
- * given entries as they are processed.
- */
-static void consume_dtle(struct dtl_entry *dtle, u64 index)
-{
-	struct dtl_ring *dtlr = &__get_cpu_var(dtl_rings);
-	struct dtl_entry *wp = dtlr->write_ptr;
-	struct lppaca *vpa = local_paca->lppaca_ptr;
-
-	if (!wp)
-		return;
-
-	*wp = *dtle;
-	barrier();
-
-	/* check for hypervisor ring buffer overflow, ignore this entry if so */
-	if (index + N_DISPATCH_LOG < vpa->dtl_idx)
-		return;
-
-	++wp;
-	if (wp == dtlr->buf_end)
-		wp = dtlr->buf;
-	dtlr->write_ptr = wp;
-
-	/* incrementing write_index makes the new entry visible */
-	smp_wmb();
-	++dtlr->write_index;
-}
-
-static int dtl_start(struct dtl *dtl)
-{
-	struct dtl_ring *dtlr = &per_cpu(dtl_rings, dtl->cpu);
-
-	dtlr->buf = dtl->buf;
-	dtlr->buf_end = dtl->buf + dtl->buf_entries;
-	dtlr->write_index = 0;
-
-	/* setting write_ptr enables logging into our buffer */
-	smp_wmb();
-	dtlr->write_ptr = dtl->buf;
-
-	/* enable event logging */
-	dtlr->saved_dtl_mask = lppaca_of(dtl->cpu).dtl_enable_mask;
-	lppaca_of(dtl->cpu).dtl_enable_mask |= dtl_event_mask;
-
-	dtl_consumer = consume_dtle;
-	atomic_inc(&dtl_count);
-	return 0;
-}
-
-static void dtl_stop(struct dtl *dtl)
-{
-	struct dtl_ring *dtlr = &per_cpu(dtl_rings, dtl->cpu);
-
-	dtlr->write_ptr = NULL;
-	smp_wmb();
-
-	dtlr->buf = NULL;
-
-	/* restore dtl_enable_mask */
-	lppaca_of(dtl->cpu).dtl_enable_mask = dtlr->saved_dtl_mask;
-
-	if (atomic_dec_and_test(&dtl_count))
-		dtl_consumer = NULL;
-}
-
-static u64 dtl_current_index(struct dtl *dtl)
-{
-	return per_cpu(dtl_rings, dtl->cpu).write_index;
-}
-
-#else /* CONFIG_VIRT_CPU_ACCOUNTING */
-
-static int dtl_start(struct dtl *dtl)
-{
-	unsigned long addr;
-	int ret, hwcpu;
-
-	/* Register our dtl buffer with the hypervisor. The HV expects the
-	 * buffer size to be passed in the second word of the buffer */
-	((u32 *)dtl->buf)[1] = DISPATCH_LOG_BYTES;
-
-	hwcpu = get_hard_smp_processor_id(dtl->cpu);
-	addr = __pa(dtl->buf);
-	ret = register_dtl(hwcpu, addr);
-	if (ret) {
-		printk(KERN_WARNING "%s: DTL registration for cpu %d (hw %d) "
-		       "failed with %d\n", __func__, dtl->cpu, hwcpu, ret);
-		return -EIO;
-	}
-
-	/* set our initial buffer indices */
-	lppaca_of(dtl->cpu).dtl_idx = 0;
-
-	/* ensure that our updates to the lppaca fields have occurred before
-	 * we actually enable the logging */
-	smp_wmb();
-
-	/* enable event logging */
-	lppaca_of(dtl->cpu).dtl_enable_mask = dtl_event_mask;
-
-	return 0;
-}
-
-static void dtl_stop(struct dtl *dtl)
-{
-	int hwcpu = get_hard_smp_processor_id(dtl->cpu);
-
-	lppaca_of(dtl->cpu).dtl_enable_mask = 0x0;
-
-	unregister_dtl(hwcpu);
-}
-
-static u64 dtl_current_index(struct dtl *dtl)
-{
-	return lppaca_of(dtl->cpu).dtl_idx;
-}
-#endif /* CONFIG_VIRT_CPU_ACCOUNTING */
-
-static int dtl_enable(struct dtl *dtl)
-{
-	long int n_entries;
-	long int rc;
-	struct dtl_entry *buf = NULL;
-
-	if (!dtl_cache)
-		return -ENOMEM;
-
-	/* only allow one reader */
-	if (dtl->buf)
-		return -EBUSY;
-
-	n_entries = dtl_buf_entries;
-	buf = kmem_cache_alloc_node(dtl_cache, GFP_KERNEL, cpu_to_node(dtl->cpu));
-	if (!buf) {
-		printk(KERN_WARNING "%s: buffer alloc failed for cpu %d\n",
-				__func__, dtl->cpu);
-		return -ENOMEM;
-	}
-
-	spin_lock(&dtl->lock);
-	rc = -EBUSY;
-	if (!dtl->buf) {
-		/* store the original allocation size for use during read */
-		dtl->buf_entries = n_entries;
-		dtl->buf = buf;
-		dtl->last_idx = 0;
-		rc = dtl_start(dtl);
-		if (rc)
-			dtl->buf = NULL;
-	}
-	spin_unlock(&dtl->lock);
-
-	if (rc)
-		kmem_cache_free(dtl_cache, buf);
-	return rc;
-}
-
-static void dtl_disable(struct dtl *dtl)
-{
-	spin_lock(&dtl->lock);
-	dtl_stop(dtl);
-	kmem_cache_free(dtl_cache, dtl->buf);
-	dtl->buf = NULL;
-	dtl->buf_entries = 0;
-	spin_unlock(&dtl->lock);
-}
-
-/* file interface */
-
-static int dtl_file_open(struct inode *inode, struct file *filp)
-{
-	struct dtl *dtl = inode->i_private;
-	int rc;
-
-	rc = dtl_enable(dtl);
-	if (rc)
-		return rc;
-
-	filp->private_data = dtl;
-	return 0;
-}
-
-static int dtl_file_release(struct inode *inode, struct file *filp)
-{
-	struct dtl *dtl = inode->i_private;
-	dtl_disable(dtl);
-	return 0;
-}
-
-static ssize_t dtl_file_read(struct file *filp, char __user *buf, size_t len,
-		loff_t *pos)
-{
-	long int rc, n_read, n_req, read_size;
-	struct dtl *dtl;
-	u64 cur_idx, last_idx, i;
-
-	if ((len % sizeof(struct dtl_entry)) != 0)
-		return -EINVAL;
-
-	dtl = filp->private_data;
-
-	/* requested number of entries to read */
-	n_req = len / sizeof(struct dtl_entry);
-
-	/* actual number of entries read */
-	n_read = 0;
-
-	spin_lock(&dtl->lock);
-
-	cur_idx = dtl_current_index(dtl);
-	last_idx = dtl->last_idx;
-
-	if (last_idx + dtl->buf_entries <= cur_idx)
-		last_idx = cur_idx - dtl->buf_entries + 1;
-
-	if (last_idx + n_req > cur_idx)
-		n_req = cur_idx - last_idx;
-
-	if (n_req > 0)
-		dtl->last_idx = last_idx + n_req;
-
-	spin_unlock(&dtl->lock);
-
-	if (n_req <= 0)
-		return 0;
-
-	i = last_idx % dtl->buf_entries;
-
-	/* read the tail of the buffer if we've wrapped */
-	if (i + n_req > dtl->buf_entries) {
-		read_size = dtl->buf_entries - i;
-
-		rc = copy_to_user(buf, &dtl->buf[i],
-				read_size * sizeof(struct dtl_entry));
-		if (rc)
-			return -EFAULT;
-
-		i = 0;
-		n_req -= read_size;
-		n_read += read_size;
-		buf += read_size * sizeof(struct dtl_entry);
-	}
-
-	/* .. and now the head */
-	rc = copy_to_user(buf, &dtl->buf[i], n_req * sizeof(struct dtl_entry));
-	if (rc)
-		return -EFAULT;
-
-	n_read += n_req;
-
-	return n_read * sizeof(struct dtl_entry);
-}
-
-static const struct file_operations dtl_fops = {
-	.open		= dtl_file_open,
-	.release	= dtl_file_release,
-	.read		= dtl_file_read,
-	.llseek		= no_llseek,
-};
-
-static struct dentry *dtl_dir;
-
-static int dtl_setup_file(struct dtl *dtl)
-{
-	char name[10];
-
-	sprintf(name, "cpu-%d", dtl->cpu);
-
-	dtl->file = debugfs_create_file(name, 0400, dtl_dir, dtl, &dtl_fops);
-	if (!dtl->file)
-		return -ENOMEM;
-
-	return 0;
-}
-
-static int dtl_init(void)
-{
-	struct dentry *event_mask_file, *buf_entries_file;
-	int rc, i;
-
-	if (!firmware_has_feature(FW_FEATURE_SPLPAR))
-		return -ENODEV;
-
-	/* set up common debugfs structure */
-
-	rc = -ENOMEM;
-	dtl_dir = debugfs_create_dir("dtl", powerpc_debugfs_root);
-	if (!dtl_dir) {
-		printk(KERN_WARNING "%s: can't create dtl root dir\n",
-				__func__);
-		goto err;
-	}
-
-	event_mask_file = debugfs_create_x8("dtl_event_mask", 0600,
-				dtl_dir, &dtl_event_mask);
-	buf_entries_file = debugfs_create_u32("dtl_buf_entries", 0400,
-				dtl_dir, &dtl_buf_entries);
-
-	if (!event_mask_file || !buf_entries_file) {
-		printk(KERN_WARNING "%s: can't create dtl files\n", __func__);
-		goto err_remove_dir;
-	}
-
-	/* set up the per-cpu log structures */
-	for_each_possible_cpu(i) {
-		struct dtl *dtl = &per_cpu(cpu_dtl, i);
-		spin_lock_init(&dtl->lock);
-		dtl->cpu = i;
-
-		rc = dtl_setup_file(dtl);
-		if (rc)
-			goto err_remove_dir;
-	}
-
-	return 0;
-
-err_remove_dir:
-	debugfs_remove_recursive(dtl_dir);
-err:
-	return rc;
-}
-arch_initcall(dtl_init);