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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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Features:
* Extend the APIC ops implementation and add IRQ_WORKER vector support so that 'perf' can work properly.
* Fix self-ballooning code, and balloon logic when booting as initial domain.
* Move array printing code to generic debugfs
* Support XenBus domains.
* Lazily free grants when a domain is dead/non-existent.
* In M2P code use batching calls
Bug-fixes:
* Fix NULL dereference in allocation failure path (hvc_xen)
* Fix unbinding of IRQ_WORKER vector during vCPU hot-unplug
* Fix HVM guest resume - we would leak an PIRQ value instead of reusing the existing one.
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Merge tag 'stable/for-linus-3.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull Xen updates from Konrad Rzeszutek Wilk:
"Features:
* Extend the APIC ops implementation and add IRQ_WORKER vector
support so that 'perf' can work properly.
* Fix self-ballooning code, and balloon logic when booting as initial
domain.
* Move array printing code to generic debugfs
* Support XenBus domains.
* Lazily free grants when a domain is dead/non-existent.
* In M2P code use batching calls
Bug-fixes:
* Fix NULL dereference in allocation failure path (hvc_xen)
* Fix unbinding of IRQ_WORKER vector during vCPU hot-unplug
* Fix HVM guest resume - we would leak an PIRQ value instead of
reusing the existing one."
Fix up add-add onflicts in arch/x86/xen/enlighten.c due to addition of
apic ipi interface next to the new apic_id functions.
* tag 'stable/for-linus-3.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: do not map the same GSI twice in PVHVM guests.
hvc_xen: NULL dereference on allocation failure
xen: Add selfballoning memory reservation tunable.
xenbus: Add support for xenbus backend in stub domain
xen/smp: unbind irqworkX when unplugging vCPUs.
xen: enter/exit lazy_mmu_mode around m2p_override calls
xen/acpi/sleep: Enable ACPI sleep via the __acpi_os_prepare_sleep
xen: implement IRQ_WORK_VECTOR handler
xen: implement apic ipi interface
xen/setup: update VA mapping when releasing memory during setup
xen/setup: Combine the two hypercall functions - since they are quite similar.
xen/setup: Populate freed MFNs from non-RAM E820 entries and gaps to E820 RAM
xen/setup: Only print "Freeing XXX-YYY pfn range: Z pages freed" if Z > 0
xen/gnttab: add deferred freeing logic
debugfs: Add support to print u32 array in debugfs
xen/p2m: An early bootup variant of set_phys_to_machine
xen/p2m: Collapse early_alloc_p2m_middle redundant checks.
xen/p2m: Allow alloc_p2m_middle to call reserve_brk depending on argument
xen/p2m: Move code around to allow for better re-usage.
This commit is contained in:
Linus Torvalds
commit
b5f4035adf
27 changed files with 827 additions and 226 deletions
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@ -20,6 +20,7 @@
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#include <linux/namei.h>
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#include <linux/debugfs.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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static ssize_t default_read_file(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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@ -520,6 +521,133 @@ struct dentry *debugfs_create_blob(const char *name, umode_t mode,
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}
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EXPORT_SYMBOL_GPL(debugfs_create_blob);
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struct array_data {
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void *array;
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u32 elements;
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};
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static int u32_array_open(struct inode *inode, struct file *file)
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{
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file->private_data = NULL;
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return nonseekable_open(inode, file);
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}
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static size_t format_array(char *buf, size_t bufsize, const char *fmt,
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u32 *array, u32 array_size)
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{
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size_t ret = 0;
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u32 i;
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for (i = 0; i < array_size; i++) {
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size_t len;
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len = snprintf(buf, bufsize, fmt, array[i]);
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len++; /* ' ' or '\n' */
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ret += len;
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if (buf) {
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buf += len;
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bufsize -= len;
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buf[-1] = (i == array_size-1) ? '\n' : ' ';
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}
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}
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ret++; /* \0 */
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if (buf)
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*buf = '\0';
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return ret;
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}
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static char *format_array_alloc(const char *fmt, u32 *array,
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u32 array_size)
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{
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size_t len = format_array(NULL, 0, fmt, array, array_size);
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char *ret;
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ret = kmalloc(len, GFP_KERNEL);
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if (ret == NULL)
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return NULL;
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format_array(ret, len, fmt, array, array_size);
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return ret;
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}
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static ssize_t u32_array_read(struct file *file, char __user *buf, size_t len,
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loff_t *ppos)
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{
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struct inode *inode = file->f_path.dentry->d_inode;
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struct array_data *data = inode->i_private;
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size_t size;
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if (*ppos == 0) {
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if (file->private_data) {
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kfree(file->private_data);
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file->private_data = NULL;
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}
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file->private_data = format_array_alloc("%u", data->array,
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data->elements);
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}
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size = 0;
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if (file->private_data)
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size = strlen(file->private_data);
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return simple_read_from_buffer(buf, len, ppos,
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file->private_data, size);
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}
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static int u32_array_release(struct inode *inode, struct file *file)
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{
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kfree(file->private_data);
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return 0;
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}
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static const struct file_operations u32_array_fops = {
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.owner = THIS_MODULE,
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.open = u32_array_open,
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.release = u32_array_release,
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.read = u32_array_read,
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.llseek = no_llseek,
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};
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/**
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* debugfs_create_u32_array - create a debugfs file that is used to read u32
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* array.
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* @name: a pointer to a string containing the name of the file to create.
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* @mode: the permission that the file should have.
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* @parent: a pointer to the parent dentry for this file. This should be a
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* directory dentry if set. If this parameter is %NULL, then the
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* file will be created in the root of the debugfs filesystem.
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* @array: u32 array that provides data.
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* @elements: total number of elements in the array.
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*
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* This function creates a file in debugfs with the given name that exports
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* @array as data. If the @mode variable is so set it can be read from.
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* Writing is not supported. Seek within the file is also not supported.
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* Once array is created its size can not be changed.
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*
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* The function returns a pointer to dentry on success. If debugfs is not
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* enabled in the kernel, the value -%ENODEV will be returned.
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*/
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struct dentry *debugfs_create_u32_array(const char *name, umode_t mode,
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struct dentry *parent,
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u32 *array, u32 elements)
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{
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struct array_data *data = kmalloc(sizeof(*data), GFP_KERNEL);
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if (data == NULL)
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return NULL;
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data->array = array;
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data->elements = elements;
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return debugfs_create_file(name, mode, parent, data, &u32_array_fops);
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}
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EXPORT_SYMBOL_GPL(debugfs_create_u32_array);
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#ifdef CONFIG_HAS_IOMEM
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/*
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