From 097114aa6eb2aa206c8cf136de77ebffe424234c Mon Sep 17 00:00:00 2001 From: Dave Young Date: Sat, 27 Jan 2018 12:11:29 +0800 Subject: print kdump kernel loaded status in stack dump It is useful to print kdump kernel loaded status in dump_stack() especially when panic happens so that we can differenciate kdump kernel early hang and a normal panic in a bug report. Link: http://lkml.kernel.org/r/20180127041129.GA29016@dhcp-128-65.nay.redhat.com To: Steven Rostedt To: Andi Kleen To: kexec@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: akpm@linux-foundation.org Cc: kexec@lists.infradead.org Signed-off-by: Dave Young Reviewed-by: Sergey Senozhatsky Reviewed-by: Simon Horman Signed-off-by: Petr Mladek --- kernel/printk/printk.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'kernel/printk/printk.c') diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index db4b9b8929eb..fa3de5f10e0e 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -48,6 +48,7 @@ #include #include #include +#include #include #include @@ -3287,9 +3288,11 @@ void __init dump_stack_set_arch_desc(const char *fmt, ...) */ void dump_stack_print_info(const char *log_lvl) { - printk("%sCPU: %d PID: %d Comm: %.20s %s %s %.*s\n", + printk("%sCPU: %d PID: %d Comm: %.20s %s%s %s %.*s\n", log_lvl, raw_smp_processor_id(), current->pid, current->comm, - print_tainted(), init_utsname()->release, + kexec_crash_loaded() ? "Kdump: loaded " : "", + print_tainted(), + init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version); -- cgit