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| author | Ralf Baechle <ralf@linux-mips.org> | 2013-05-29 03:07:19 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-06-10 20:02:30 +0400 |
| commit | c3fc5cd5c5a5f4738776a965a020a32c1a37c8fd (patch) | |
| tree | 59c7114e5c9e682b0b6ec647cabfa4d942ee1377 /arch/mips/kernel/ptrace.c | |
| parent | e7f3b48af7be9f8007a224663a5b91340626fed5 (diff) | |
| download | linux-c3fc5cd5c5a5f4738776a965a020a32c1a37c8fd.tar.xz | |
MIPS: Implement HAVE_CONTEXT_TRACKING.
This enables support for CONFIG_NO_HZ_FULL.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/ptrace.c')
| -rw-r--r-- | arch/mips/kernel/ptrace.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 9c6299c733a3..8ae1ebef8b71 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 @@ static inline int audit_arch(void) */ 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 @@ out: */ 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 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs) send_sig(current->exit_code, current, 1); current->exit_code = 0; } + + user_enter(); } |