[Crash-utility] [PATCH v2 13/17] MIPS64: Add 'bt -l' command support

Add 'bt -l' command support, get a line number associated with a current pc address. E.g. With this patch: crash> bt -l PID: 4768 TASK: 9800000243bcf200 CPU: 3 COMMAND: "bash" #0 [980000024291f930] __crash_kexec at ffffffff802fff84 /home/tang/loongson-419/linux-4.19.152kexec/./arch/mips/include/asm/stacktrace.h: 43 #1 [980000024291faa0] panic at ffffffff80248cac /home/tang/loongson-419/linux-4.19.152kexec/kernel/panic.c: 206 ... Signed-off-by: Huacai Chen <chenhuacai(a)loongson.cn&gt; Signed-off-by: Youling Tang <tangyouling(a)loongson.cn&gt; --- v1 -> v2: - No change. mips64.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/mips64.c b/mips64.c index ad1af46..98c4fdd 100644 --- a/mips64.c +++ b/mips64.c @@ -640,6 +640,15 @@ mips64_dump_backtrace_entry(struct bt_info *bt, struct syment *sym, fprintf(fp, "\n"); + /* + * 'bt -l', get a line number associated with a current pc address. + */ + if (bt->flags & BT_LINE_NUMBERS) { + get_line_number(current->pc, buf, FALSE); + if (strlen(buf)) + fprintf(fp, " %s\n", buf); + } + if (sym && mips64_is_exception_entry(sym)) { GET_STACK_DATA(current->sp, &pt_regs, SIZE(pt_regs)); mips64_dump_exception_stack(bt, pt_regs); -- 2.1.0