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[RESEND,2/3] riscv: Improve __show_regs

Message ID 20210111124014.182957-3-wangkefeng.wang@huawei.com (mailing list archive)
State New, archived
Headers show
Series riscv: improve the stacktrace report | expand

Commit Message

Kefeng Wang Jan. 11, 2021, 12:40 p.m. UTC 
Show the function symbols of epc and ra to improve the
readability of crash reports, and align the printing
formats about the raw epc value.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
 arch/riscv/kernel/process.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 78bb3a00d249..d8c099aa1337 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -44,7 +44,12 @@  void __show_regs(struct pt_regs *regs)
 {
 	show_regs_print_info(KERN_DEFAULT);
 
-	pr_cont("epc: " REG_FMT " ra : " REG_FMT " sp : " REG_FMT "\n",
+	if (!user_mode(regs)) {
+		pr_cont("epc : %pS\n", (void *)regs->epc);
+		pr_cont(" ra : %pS\n", (void *)regs->ra);
+	}
+
+	pr_cont("epc : " REG_FMT " ra : " REG_FMT " sp : " REG_FMT "\n",
 		regs->epc, regs->ra, regs->sp);
 	pr_cont(" gp : " REG_FMT " tp : " REG_FMT " t0 : " REG_FMT "\n",
 		regs->gp, regs->tp, regs->t0);