[IA64] Rename TIF_PERFMON_WORK back to TIF_NOTIFY_RESUME

Since the RSE synchronization will need a TIF_ flag, but all

work-to-be-done bits are already used, so we have to multiplex
TIF_NOTIFY_RESUME again.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>

2 files changed, 12 insertions, 18 deletions

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 78acd9fe97e9..f6b99719f10f 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -586,21 +586,6 @@ pfm_put_task(struct task_struct *task)
 }
 
 static inline void
-pfm_set_task_notify(struct task_struct *task)
-{
-        struct thread_info *info;
-
-        info = (struct thread_info *) ((char *) task + IA64_TASK_SIZE);
-        set_bit(TIF_PERFMON_WORK, &info->flags);
-}
-
-static inline void
-pfm_clear_task_notify(void)
-{
-        clear_thread_flag(TIF_PERFMON_WORK);
-}
-
-static inline void
 pfm_reserve_page(unsigned long a)
 {
         SetPageReserved(vmalloc_to_page((void *)a));
@@ -3724,7 +3709,7 @@ pfm_restart(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
 
                 PFM_SET_WORK_PENDING(task, 1);
 
-                pfm_set_task_notify(task);
+                tsk_set_notify_resume(task);
 
                 /*
                  * XXX: send reschedule if task runs on another CPU
@@ -5082,7 +5067,7 @@ pfm_handle_work(void)
 
         PFM_SET_WORK_PENDING(current, 0);
 
-        pfm_clear_task_notify();
+        tsk_clear_notify_resume(current);
 
         regs = task_pt_regs(current);
 
@@ -5450,7 +5435,7 @@ pfm_overflow_handler(struct task_struct *task, pfm_context_t *ctx, u64 pmc0, str
                          * when coming from ctxsw, current still points to the
                          * previous task, therefore we must work with task and not current.
                          */
-                        pfm_set_task_notify(task);
+                        tsk_set_notify_resume(task);
                 }
                 /*
                  * defer until state is changed (shorten spin window). the context is locked
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 7377d323131d..5c9efe626563 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -157,6 +157,15 @@ show_regs (struct pt_regs *regs)
                 show_stack(NULL, NULL);
 }
 
+void tsk_clear_notify_resume(struct task_struct *tsk)
+{
+#ifdef CONFIG_PERFMON
+        if (tsk->thread.pfm_needs_checking)
+                return;
+#endif
+        clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME);
+}
+
 void
 do_notify_resume_user (sigset_t *unused, struct sigscratch *scr, long in_syscall)
 {