diff options
| author | Eric Anholt <anholt@freebsd.org> | 2003-10-19 23:35:58 +0000 |
|---|---|---|
| committer | Eric Anholt <anholt@freebsd.org> | 2003-10-19 23:35:58 +0000 |
| commit | 0cf1887139eb1ce18d09f7be0567aa93d802040d (patch) | |
| tree | 05704a5a90bc9b0fbabed4029f200f9eff955953 /bsd-core/drm_vm.c | |
| parent | 59fbe01fea8f77fc3810643c14a1738d197d4291 (diff) | |
- SMPng lock the DRM. This is only partial -- there are a few code paths
used by root (the X Server) which are not locked. However, it should
deal with lost-IRQ issues on -current which I think people have been
experiencing but I am unable to reproduce (though I understand why they
would occur, because of a bug of mine). Note that most of the locking
(DRM_LOCK()/UNLOCK()) is all covered by Giant still, so it doesn't
matter yet.
- Remove locking on FreeBSD-stable and NetBSD. These are covered by the
fact that there is no reentrancy of the kernel except by interrupts,
which are locked using spldrm()/splx() instead.
Diffstat (limited to 'bsd-core/drm_vm.c')
| -rw-r--r-- | bsd-core/drm_vm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/bsd-core/drm_vm.c b/bsd-core/drm_vm.c index da815329..9e9f1e14 100644 --- a/bsd-core/drm_vm.c +++ b/bsd-core/drm_vm.c @@ -65,7 +65,9 @@ paddr_t DRM(mmap)(dev_t kdev, off_t offset, int prot) drm_map_list_entry_t *listentry = NULL; drm_file_t *priv; + DRM_LOCK(); priv = DRM(find_file_by_proc)(dev, DRM_CURPROC); + DRM_UNLOCK(); if (!priv) { DRM_DEBUG("can't find authenticator\n"); return EINVAL; |