RISC-V: Take text_mutex in ftrace_init_nop()

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Without this we get lockdep failures.  They're spurious failures as SMP isn't
up when ftrace_init_nop() is called.  As far as I can tell the easiest fix is
to just take the lock, which also seems like the safest fix.

Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

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Palmer Dabbelt 2020-08-24 17:21:22 -07:00

parent d012a7190f

commit 66d18dbda8

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7

arch/riscv/include/asm/ftrace.h

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19

arch/riscv/kernel/ftrace.c

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