Christophe Leroy's on April 4, 2020 12:45 am: > > > Le 03/04/2020 à 15:26, Nicholas Piggin a écrit : >> Similarly to the previous patch, do not trace system reset. This code >> is used when there is a crash or hang, and tracing disturbs the system >> more and has been known to crash in the crash handling path. >> >> Acked-by: Naveen N. Rao <naveen.n....@linux.vnet.ibm.com> >> Signed-off-by: Nicholas Piggin <npig...@gmail.com> >> --- >> arch/powerpc/kernel/traps.c | 5 +++++ >> 1 file changed, 5 insertions(+) >> >> diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c >> index 1845fd7e161a..ed7b7a6e2dc0 100644 >> --- a/arch/powerpc/kernel/traps.c >> +++ b/arch/powerpc/kernel/traps.c >> @@ -443,6 +443,9 @@ void system_reset_exception(struct pt_regs *regs) >> unsigned long hsrr0, hsrr1; >> bool nested = in_nmi(); >> bool saved_hsrrs = false; >> + u8 ftrace_enabled = local_paca->ftrace_enabled; >> + >> + local_paca->ftrace_enabled = 0; > > I predict a build failure here in the near future ...
Will fix. Naveen suggested some helper functions for this too. Thanks, Nick
