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-rw-r--r--arch/hexagon/kernel/process.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index 06ae9ffcabd5..dc72ed5b9ed9 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -24,6 +24,7 @@
#include <linux/tick.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
+#include <linux/tracehook.h>
/*
* Program thread launch. Often defined as a macro in processor.h,
@@ -202,3 +203,43 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
{
return 0;
}
+
+
+/*
+ * Called on the exit path of event entry; see vm_entry.S
+ *
+ * Interrupts will already be disabled.
+ *
+ * Returns 0 if there's no need to re-check for more work.
+ */
+
+int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
+{
+ if (!(thread_info_flags & _TIF_ALLWORK_MASK)) {
+ return 0;
+ } /* shortcut -- no work to be done */
+
+ local_irq_enable();
+
+ if (thread_info_flags & _TIF_NEED_RESCHED) {
+ schedule();
+ return 1;
+ }
+
+ if (thread_info_flags & _TIF_SIGPENDING) {
+ do_signal(regs);
+ return 1;
+ }
+
+ if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ if (current->replacement_session_keyring)
+ key_replace_session_keyring();
+ return 1;
+ }
+
+ /* Should not even reach here */
+ panic("%s: bad thread_info flags 0x%08x\n", __func__,
+ thread_info_flags);
+}
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