Messages in this thread Patch in this message |  | | From | Li Huafei <> | Subject | [PATCH RESEND v2 1/2] riscv: ftrace: Fix the comments about the number of ftrace instruction | Date | Fri, 9 Sep 2022 10:36:24 +0800 |
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When DYNAMIC_FTRACE is enabled, we put 8 16-bit instructions in front of the function for ftrace use, not 5.
Fixes: afc76b8b8011 ("riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT") Suggested-by: Guo Ren <guoren@kernel.org> Signed-off-by: Li Huafei <lihuafei1@huawei.com> --- v1: https://lore.kernel.org/lkml/20220426015751.88582-1-lihuafei1@huawei.com/ v2: https://lore.kernel.org/lkml/20220819025522.154189-1-lihuafei1@huawei.com/
v2 RESEND: - Rebase onto v6.0-rc4.
Changlog in v1 -> v2: - Add the fix tag. - Delete the expression "4 instructions".
arch/riscv/kernel/ftrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/kernel/ftrace.c b/arch/riscv/kernel/ftrace.c index 2086f6585773..552088e9acc4 100644 --- a/arch/riscv/kernel/ftrace.c +++ b/arch/riscv/kernel/ftrace.c @@ -71,8 +71,8 @@ static int __ftrace_modify_call(unsigned long hook_pos, unsigned long target, } /* - * Put 5 instructions with 16 bytes at the front of function within - * patchable function entry nops' area. + * Put 16 bytes at the front of the function within the patchable function + * entry nops' area. * * 0: REG_S ra, -SZREG(sp) * 1: auipc ra, 0x? -- 2.17.1
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