Commit-ID: 5651f7f47dbb1cf2b95a60582546db4ff508e2b4 Gitweb: http://git.kernel.org/tip/5651f7f47dbb1cf2b95a60582546db4ff508e2b4 Author: Don Zickus <dzickus@xxxxxxxxxx> AuthorDate: Wed, 9 Feb 2011 14:02:33 -0500 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Thu, 10 Feb 2011 13:21:59 +0100 watchdog, nmi: Lower the severity of error messages During boot if the hardlockup detector fails to initialize, it complains very loudly. Some failures should be expected under certain situations, ie no lapics, or resource in-use. Tone those error messages down a bit. Keep the rest at a high level. Reported-by: Paul Bolle <pebolle@xxxxxxxxxx> Tested-by: Paul Bolle <pebolle@xxxxxxxxxx> Signed-off-by: Don Zickus <dzickus@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> LKML-Reference: <1297278153-21111-1-git-send-email-dzickus@xxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/watchdog.c | 10 ++++++++-- 1 files changed, 8 insertions(+), 2 deletions(-) diff --git a/kernel/watchdog.c b/kernel/watchdog.c index f37f974..18bb157 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -363,8 +363,14 @@ static int watchdog_nmi_enable(int cpu) goto out_save; } - printk(KERN_ERR "NMI watchdog disabled for cpu%i: unable to create perf event: %ld\n", - cpu, PTR_ERR(event)); + + /* vary the KERN level based on the returned errno */ + if (PTR_ERR(event) == -EOPNOTSUPP) + printk(KERN_INFO "NMI watchdog disabled (cpu%i): not supported (no LAPIC?)\n", cpu); + else if (PTR_ERR(event) == -ENOENT) + printk(KERN_WARNING "NMI watchdog disabled (cpu%i): hardware events not enabled\n", cpu); + else + printk(KERN_ERR "NMI watchdog disabled (cpu%i): unable to create perf event: %ld\n", cpu, PTR_ERR(event)); return PTR_ERR(event); /* success path */ -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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