Messages in this thread | | | Date | Thu, 09 Jul 2020 15:06:42 -0700 (PDT) | Subject | Re: [PATCH V2 0/3] riscv: Enable LOCKDEP | From | Palmer Dabbelt <> |
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On Sat, 27 Jun 2020 06:57:05 PDT (-0700), guoren@kernel.org wrote: > From: Guo Ren <guoren@linux.alibaba.com> > > 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!
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