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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-02-15 10:18:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-02-15 10:18:48 -0800 |
| commit | 1cecd791f2708b621e619cf4df4636c97c9497e5 (patch) | |
| tree | 7d1cae2e3e0c02a5c187408fac36f0bae20fadf0 /kernel | |
| parent | fef86db8feb2618430ac9e3c9b6197a7eacaf27a (diff) | |
| parent | a252852afaea8270fcb91628b298253b112fc92e (diff) | |
| download | blackbird-op-linux-1cecd791f2708b621e619cf4df4636c97c9497e5.tar.gz blackbird-op-linux-1cecd791f2708b621e619cf4df4636c97c9497e5.zip | |
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix text_poke_smp_batch() deadlock
perf tools: Fix thread_map event synthesizing in top and record
watchdog, nmi: Lower the severity of error messages
ARM: oprofile: Fix backtraces in timer mode
oprofile: Fix usage of CONFIG_HW_PERF_EVENTS for oprofile_perf_init and friends
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/watchdog.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index f37f974aa81b..18bb15776c57 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 */ |
