summaryrefslogtreecommitdiff
path: root/arch/hexagon/kernel/process.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/hexagon/kernel/process.c')
-rw-r--r--arch/hexagon/kernel/process.c42
1 files changed, 41 insertions, 1 deletions
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index 9b948c619a03..0a0dd5c05b46 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,
@@ -95,7 +96,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
if (unlikely(p->flags & PF_KTHREAD)) {
memset(childregs, 0, sizeof(struct pt_regs));
/* r24 <- fn, r25 <- arg */
- ss->r2524 = usp | ((u64)arg << 32);
+ ss->r24 = usp;
+ ss->r25 = arg;
pt_set_kmode(childregs);
return 0;
}
@@ -185,3 +187,41 @@ 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_WORK_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);
+ return 1;
+ }
+
+ /* Should not even reach here */
+ panic("%s: bad thread_info flags 0x%08x\n", __func__,
+ thread_info_flags);
+}