lkml.org 
[lkml]   [2020]   [Jun]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH V2 0/3] riscv: Enable LOCKDEP
Date
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(-)

--
2.7.4

\
 
 \ /
  Last update: 2020-06-27 15:59    [W:0.072 / U:1.372 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site