diff options
Diffstat (limited to 'arch/x86/entry/common.c')
| -rw-r--r-- | arch/x86/entry/common.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c index 19f650d729f5..8e5498be76bd 100644 --- a/arch/x86/entry/common.c +++ b/arch/x86/entry/common.c @@ -295,6 +295,34 @@ __visible void do_syscall_64(unsigned long nr, struct pt_regs *regs) syscall_return_slowpath(regs); } + +#ifdef CONFIG_TRACE_IRQFLAGS +extern void trace_hardirqs_on_caller(unsigned long caller_addr); +__visible void trace_hardirqs_on_caller_cr2(unsigned long caller_addr) +{ + unsigned long address = read_cr2(); /* Get the faulting address */ + enum ctx_state prev_state; + + prev_state = exception_enter(); + trace_hardirqs_on_caller(caller_addr); + if (address != read_cr2()) + write_cr2(address); + exception_exit(prev_state); +} + +extern void trace_hardirqs_off_caller(unsigned long caller_addr); +__visible void trace_hardirqs_off_caller_cr2(unsigned long caller_addr) +{ + unsigned long address = read_cr2(); /* Get the faulting address */ + enum ctx_state prev_state; + + prev_state = exception_enter(); + trace_hardirqs_off_caller(caller_addr); + if (address != read_cr2()) + write_cr2(address); + exception_exit(prev_state); +} +#endif #endif #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION) |