diff options
| author |   Maxime Ripard <maxime@cerno.tech> | 2020-04-14 09:19:50 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2020-04-14 09:19:50 +0200 |
| commit | a4721ced760684d1776bf31f7925aa41bb3f4846 (patch) | |
| tree | a76e23b60ecceed68b5fa4904f677fe20e304b6e /arch/riscv/kernel/stacktrace.c | |
| parent | drm/bridge: analogix_dp: Split bind() into probe() and real bind() (diff) | |
| parent | Linux 5.7-rc1 (diff) | |
Merge v5.7-rc1 into drm-misc-fixes
Start the new drm-misc-fixes cycle.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'arch/riscv/kernel/stacktrace.c')
| -rw-r--r-- | arch/riscv/kernel/stacktrace.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index 0940681d2f68..02087fe539c6 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -19,6 +19,8 @@ struct stackframe { unsigned long ra; }; +register unsigned long sp_in_global __asm__("sp"); + void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, bool (*fn)(unsigned long, void *), void *arg) { @@ -29,7 +31,7 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, sp = user_stack_pointer(regs); pc = instruction_pointer(regs); } else if (task == NULL || task == current) { - const register unsigned long current_sp __asm__ ("sp"); + const register unsigned long current_sp = sp_in_global; fp = (unsigned long)__builtin_frame_address(0); sp = current_sp; pc = (unsigned long)walk_stackframe; @@ -73,8 +75,7 @@ static void notrace walk_stackframe(struct task_struct *task, sp = user_stack_pointer(regs); pc = instruction_pointer(regs); } else if (task == NULL || task == current) { - const register unsigned long current_sp __asm__ ("sp"); - sp = current_sp; + sp = sp_in_global; pc = (unsigned long)walk_stackframe; } else { /* task blocked in __switch_to */ |