MIPS: Implement HAVE_CONTEXT_TRACKING.
This enables support for CONFIG_NO_HZ_FULL.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 9c6299c..8ae1ebe 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -15,6 +15,7 @@
* binaries.
*/
#include <linux/compiler.h>
+#include <linux/context_tracking.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
@@ -534,6 +535,8 @@
*/
asmlinkage void syscall_trace_enter(struct pt_regs *regs)
{
+ user_exit();
+
/* do the secure computing check first */
secure_computing_strict(regs->regs[2]);
@@ -570,6 +573,13 @@
*/
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
+ /*
+ * We may come here right after calling schedule_user()
+ * or do_notify_resume(), in which case we can be in RCU
+ * user mode.
+ */
+ user_exit();
+
audit_syscall_exit(regs);
if (!(current->ptrace & PT_PTRACED))
@@ -592,4 +602,6 @@
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
+
+ user_enter();
}