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authorDavid Herrmann <dh.herrmann@gmail.com>2014-08-29 14:12:29 +0400
committerDave Airlie <airlied@redhat.com>2014-09-10 11:13:36 +0400
commit03decbe57ac6c9e632f7cde0f7d0a54bbcaf8464 (patch)
tree177436526b40cbc2c29c99ea9f6e14de248fd99b /drivers/gpu/drm/drm_vm.c
parent9fc5cde7fb6699b0a75e90b7cbfee7c912dd94c2 (diff)
downloadlinux-03decbe57ac6c9e632f7cde0f7d0a54bbcaf8464.tar.xz
drm: move "struct drm_vma_entry" to drm_vm.c
Make all the drm_vma_entry handling local to drm_vm.c and hide it from global headers. This requires to extract the inlined legacy drm_vma_entry cleanup into a small helper and also move a weirdly placed drm_vma_info helper into drm_vm.c. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_vm.c')
-rw-r--r--drivers/gpu/drm/drm_vm.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 24e045c4f531..352e3399d18f 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -35,11 +35,18 @@
#include <drm/drmP.h>
#include <linux/export.h>
+#include <linux/seq_file.h>
#if defined(__ia64__)
#include <linux/efi.h>
#include <linux/slab.h>
#endif
+struct drm_vma_entry {
+ struct list_head head;
+ struct vm_area_struct *vma;
+ pid_t pid;
+};
+
static void drm_vm_open(struct vm_area_struct *vma);
static void drm_vm_close(struct vm_area_struct *vma);
@@ -662,3 +669,72 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
return ret;
}
EXPORT_SYMBOL(drm_mmap);
+
+void drm_legacy_vma_flush(struct drm_device *dev)
+{
+ struct drm_vma_entry *vma, *vma_temp;
+
+ /* Clear vma list (only needed for legacy drivers) */
+ list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
+ list_del(&vma->head);
+ kfree(vma);
+ }
+}
+
+#if DRM_DEBUG_CODE
+
+int drm_vma_info(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_device *dev = node->minor->dev;
+ struct drm_vma_entry *pt;
+ struct vm_area_struct *vma;
+ unsigned long vma_count = 0;
+#if defined(__i386__)
+ unsigned int pgprot;
+#endif
+
+ mutex_lock(&dev->struct_mutex);
+ list_for_each_entry(pt, &dev->vmalist, head)
+ vma_count++;
+
+ seq_printf(m, "vma use count: %lu, high_memory = %pK, 0x%pK\n",
+ vma_count, high_memory,
+ (void *)(unsigned long)virt_to_phys(high_memory));
+
+ list_for_each_entry(pt, &dev->vmalist, head) {
+ vma = pt->vma;
+ if (!vma)
+ continue;
+ seq_printf(m,
+ "\n%5d 0x%pK-0x%pK %c%c%c%c%c%c 0x%08lx000",
+ pt->pid,
+ (void *)vma->vm_start, (void *)vma->vm_end,
+ vma->vm_flags & VM_READ ? 'r' : '-',
+ vma->vm_flags & VM_WRITE ? 'w' : '-',
+ vma->vm_flags & VM_EXEC ? 'x' : '-',
+ vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
+ vma->vm_flags & VM_LOCKED ? 'l' : '-',
+ vma->vm_flags & VM_IO ? 'i' : '-',
+ vma->vm_pgoff);
+
+#if defined(__i386__)
+ pgprot = pgprot_val(vma->vm_page_prot);
+ seq_printf(m, " %c%c%c%c%c%c%c%c%c",
+ pgprot & _PAGE_PRESENT ? 'p' : '-',
+ pgprot & _PAGE_RW ? 'w' : 'r',
+ pgprot & _PAGE_USER ? 'u' : 's',
+ pgprot & _PAGE_PWT ? 't' : 'b',
+ pgprot & _PAGE_PCD ? 'u' : 'c',
+ pgprot & _PAGE_ACCESSED ? 'a' : '-',
+ pgprot & _PAGE_DIRTY ? 'd' : '-',
+ pgprot & _PAGE_PSE ? 'm' : 'k',
+ pgprot & _PAGE_GLOBAL ? 'g' : 'l');
+#endif
+ seq_printf(m, "\n");
+ }
+ mutex_unlock(&dev->struct_mutex);
+ return 0;
+}
+
+#endif