Commit-ID: cb376c26971ff54f25980ec1f0ae2f06d6a69df0 Gitweb: https://git.kernel.org/tip/cb376c26971ff54f25980ec1f0ae2f06d6a69df0 Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Fri, 26 Jul 2019 23:19:43 +0200 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 31 Jul 2019 19:03:36 +0200
x86/dumpstack: Indicate PREEMPT_RT in dumps Stack dumps print whether the kernel has preemption enabled or not. Extend it so a PREEMPT_RT enabled kernel can be identified. Signed-off-by: Thomas Gleixner <t...@linutronix.de> Acked-by: Peter Zijlstra (Intel) <pet...@infradead.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Masami Hiramatsu <mhira...@kernel.org> Cc: Paolo Bonzini <pbonz...@redhat.com> Cc: Paul E. McKenney <paul...@linux.ibm.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Steven Rostedt <rost...@goodmis.org> Link: http://lkml.kernel.org/r/20190726212124.699136...@linutronix.de Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/kernel/dumpstack.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index 2b5886401e5f..e07424e19274 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -367,13 +367,18 @@ NOKPROBE_SYMBOL(oops_end); int __die(const char *str, struct pt_regs *regs, long err) { + const char *pr = ""; + /* Save the regs of the first oops for the executive summary later. */ if (!die_counter) exec_summary_regs = *regs; + if (IS_ENABLED(CONFIG_PREEMPTION)) + pr = IS_ENABLED(CONFIG_PREEMPT_RT) ? " PREEMPT_RT" : " PREEMPT"; + printk(KERN_DEFAULT "%s: %04lx [#%d]%s%s%s%s%s\n", str, err & 0xffff, ++die_counter, - IS_ENABLED(CONFIG_PREEMPT) ? " PREEMPT" : "", + pr, IS_ENABLED(CONFIG_SMP) ? " SMP" : "", debug_pagealloc_enabled() ? " DEBUG_PAGEALLOC" : "", IS_ENABLED(CONFIG_KASAN) ? " KASAN" : "",
