diff options
Diffstat (limited to 'arch/powerpc/xmon/xmon.c')
| -rw-r--r-- | arch/powerpc/xmon/xmon.c | 36 |
1 files changed, 10 insertions, 26 deletions
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index eab3492a45c..013f2866878 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -17,6 +17,7 @@ #include <linux/reboot.h> #include <linux/delay.h> #include <linux/kallsyms.h> +#include <linux/kmsg_dump.h> #include <linux/cpumask.h> #include <linux/export.h> #include <linux/sysrq.h> @@ -2148,40 +2149,23 @@ print_address(unsigned long addr) void dump_log_buf(void) { - const unsigned long size = 128; - unsigned long end, addr; - unsigned char buf[size + 1]; - - addr = 0; - buf[size] = '\0'; + struct kmsg_dumper dumper = { .active = 1 }; + unsigned char buf[128]; + size_t len; if (setjmp(bus_error_jmp) != 0) { - printf("Unable to lookup symbol __log_buf!\n"); + printf("Error dumping printk buffer!\n"); return; } catch_memory_errors = 1; sync(); - addr = kallsyms_lookup_name("__log_buf"); - - if (! addr) - printf("Symbol __log_buf not found!\n"); - else { - end = addr + (1 << CONFIG_LOG_BUF_SHIFT); - while (addr < end) { - if (! mread(addr, buf, size)) { - printf("Can't read memory at address 0x%lx\n", addr); - break; - } - - printf("%s", buf); - if (strlen(buf) < size) - break; - - addr += size; - } - } + kmsg_dump_rewind_nolock(&dumper); + while (kmsg_dump_get_line_nolock(&dumper, false, buf, sizeof(buf), &len)) { + buf[len] = '\0'; + printf("%s", buf); + } sync(); /* wait a little while to see if we get a machine check */ |