From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Steven Rostedt <rostedt@goodmis.org>,
"Paul E. McKenney" <paulmck@linux.ibm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: [patch 7/8] x86/dumpstack: Indicate PREEMPT_RT in dumps
Date: Fri, 26 Jul 2019 23:19:43 +0200 [thread overview]
Message-ID: <20190726212124.699136351@linutronix.de> (raw)
In-Reply-To: 20190726211936.226129163@linutronix.de
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>
---
arch/x86/kernel/dumpstack.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- 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" : "",
next prev parent reply other threads:[~2019-07-26 21:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-26 21:19 [patch 0/8] core, x86: Preparatory steps for RT Thomas Gleixner
2019-07-26 21:19 ` [patch 1/8] preempt: Use CONFIG_PREEMPTION where appropriate Thomas Gleixner
2019-07-31 17:55 ` [tip:sched/rt] sched/preempt: " tip-bot for Thomas Gleixner
2019-07-26 21:19 ` [patch 2/8] rcu: Use CONFIG_PREEMPTION Thomas Gleixner
2019-07-31 17:56 ` [tip:sched/rt] " tip-bot for Thomas Gleixner
2019-07-26 21:19 ` [patch 3/8] locking: " Thomas Gleixner
2019-07-31 17:56 ` [tip:sched/rt] locking/spinlocks: " tip-bot for Thomas Gleixner
2019-07-26 21:19 ` [patch 4/8] tracing: " Thomas Gleixner
2019-07-31 17:57 ` [tip:sched/rt] " tip-bot for Thomas Gleixner
2019-07-26 21:19 ` [patch 5/8] kprobes: " Thomas Gleixner
2019-07-31 17:58 ` [tip:sched/rt] " tip-bot for Thomas Gleixner
2019-07-26 21:19 ` [patch 6/8] x86: " Thomas Gleixner
2019-07-31 17:59 ` [tip:sched/rt] " tip-bot for Thomas Gleixner
2019-07-26 21:19 ` Thomas Gleixner [this message]
2019-07-31 17:59 ` [tip:sched/rt] x86/dumpstack: Indicate PREEMPT_RT in dumps tip-bot for Thomas Gleixner
2019-07-26 21:19 ` [patch 8/8] x86/kvm: Use CONFIG_PREEMPTION Thomas Gleixner
2019-07-31 18:00 ` [tip:sched/rt] " tip-bot for Thomas Gleixner
2019-07-27 1:30 ` [patch 0/8] core, x86: Preparatory steps for RT Steven Rostedt
2019-07-27 6:16 ` Thomas Gleixner
2019-07-29 19:48 ` Peter Zijlstra
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