Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

Pull tile updates from Chris Metcalf:
 "These changes cover a range of new arch/tile features and
  optimizations.  They've been through LKML review and on linux-next for
  a month or so.  There's also one bug-fix that just missed 3.4, which
  I've marked for stable."

Fixed up trivial conflict in arch/tile/Kconfig (new added tile Kconfig
entries clashing with the generic timer/clockevents changes).

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: default to tilegx_defconfig for ARCH=tile
  tile: fix bug where fls(0) was not returning 0
  arch/tile: mark TILEGX as not EXPERIMENTAL
  tile/mm/fault.c: Port OOM changes to handle_page_fault
  arch/tile: add descriptive text if the kernel reports a bad trap
  arch/tile: allow querying cpu module information from the hypervisor
  arch/tile: fix hardwall for tilegx and generalize for idn and ipi
  arch/tile: support multiple huge page sizes dynamically
  mm: add new arch_make_huge_pte() method for tile support
  arch/tile: support kexec() for tilegx
  arch/tile: support <asm/cachectl.h> header for cacheflush() syscall
  arch/tile: Allow tilegx to build with either 16K or 64K page size
  arch/tile: optimize get_user/put_user and friends
  arch/tile: support building big-endian kernel
  arch/tile: allow building Linux with transparent huge pages enabled
  arch/tile: use interrupt critical sections less

1 files changed, 6 insertions, 10 deletions

diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index f572c19c4082..ba1023d8a021 100644
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -128,10 +128,10 @@ void arch_release_thread_info(struct thread_info *info)
          * Calling deactivate here just frees up the data structures.
          * If the task we're freeing held the last reference to a
          * hardwall fd, it would have been released prior to this point
-         * anyway via exit_files(), and "hardwall" would be NULL by now.
+         * anyway via exit_files(), and the hardwall_task.info pointers
+         * would be NULL by now.
          */
-        if (info->task->thread.hardwall)
-                hardwall_deactivate(info->task);
+        hardwall_deactivate_all(info->task);
 #endif
 
         if (step_state) {
@@ -245,7 +245,8 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 
 #ifdef CONFIG_HARDWALL
         /* New thread does not own any networks. */
-        p->thread.hardwall = NULL;
+        memset(&p->thread.hardwall[0], 0,
+               sizeof(struct hardwall_task) * HARDWALL_TYPES);
 #endif
 
 
@@ -515,12 +516,7 @@ struct task_struct *__sched _switch_to(struct task_struct *prev,
 
 #ifdef CONFIG_HARDWALL
         /* Enable or disable access to the network registers appropriately. */
-        if (prev->thread.hardwall != NULL) {
-                if (next->thread.hardwall == NULL)
-                        restrict_network_mpls();
-        } else if (next->thread.hardwall != NULL) {
-                grant_network_mpls();
-        }
+        hardwall_switch_tasks(prev, next);
 #endif
 
         /*