Commit cb376c26 authored Jul 26, 2019 by Thomas Gleixner Committed by Ingo Molnar Jul 31, 2019

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 <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20190726212124.699136351@linutronix.de

Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent 48593975

arch/x86/kernel/dumpstack.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -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" : "",

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