diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gemfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gemfs.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gemfs.c b/drivers/gpu/drm/i915/i915_gemfs.c index 168d0bd98f60..e2993857df37 100644 --- a/drivers/gpu/drm/i915/i915_gemfs.c +++ b/drivers/gpu/drm/i915/i915_gemfs.c @@ -24,6 +24,7 @@ #include <linux/fs.h> #include <linux/mount.h> +#include <linux/pagemap.h> #include "i915_drv.h" #include "i915_gemfs.h" @@ -41,6 +42,27 @@ int i915_gemfs_init(struct drm_i915_private *i915) if (IS_ERR(gemfs)) return PTR_ERR(gemfs); + /* + * Enable huge-pages for objects that are at least HPAGE_PMD_SIZE, most + * likely 2M. Note that within_size may overallocate huge-pages, if say + * we allocate an object of size 2M + 4K, we may get 2M + 2M, but under + * memory pressure shmem should split any huge-pages which can be + * shrunk. + */ + + if (has_transparent_hugepage()) { + struct super_block *sb = gemfs->mnt_sb; + char options[] = "huge=within_size"; + int flags = 0; + int err; + + err = sb->s_op->remount_fs(sb, &flags, options); + if (err) { + kern_unmount(gemfs); + return err; + } + } + i915->mm.gemfs = gemfs; return 0; |