Thank you, Palmer On Fri, Jul 10, 2020 at 6:06 AM Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx> wrote: > > On Sat, 27 Jun 2020 06:57:05 PDT (-0700), guoren@xxxxxxxxxx wrote: > > From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > > > > Lockdep is needed by proving the spinlocks and rwlocks. To support it, > > we need to add TRACE_IRQFLAGS codes in kernel/entry.S. These patches > > follow Documentation/irqflags-tracing.txt. > > > > Fixup 2 bugs that block the lockdep implementation. > > > > --- > > Changes in v2 > > - Remove sX regs recovery codes which are unnecessary, because > > callee will handle them. Thx Greentime :) > > > > - Move "restore a0 - a7" to handle_syscall, but if _TIF_SYSCALL_WORK > > is set, "restore a1 - a7" is still duplicated. I prefer a C wrapper > > for syscall. > > > > Guo Ren (2): > > riscv: Fixup static_obj() fail > > riscv: Enable LOCKDEP_SUPPORT & fixup TRACE_IRQFLAGS_SUPPORT > > > > Zong Li (1): > > riscv: Fixup lockdep_assert_held with wrong param cpu_running > > > > arch/riscv/Kconfig | 3 +++ > > arch/riscv/kernel/entry.S | 33 ++++++++++++++++++++++++++++++++- > > arch/riscv/kernel/smpboot.c | 1 - > > arch/riscv/kernel/vmlinux.lds.S | 2 +- > > 4 files changed, 36 insertions(+), 3 deletions(-) > > These are on for-next. As far as I can tell lockdep is working, but I'm just > doing some simple boot tests. > > Thanks! -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/
