Commit-ID: 1b6266ebe3da8198e9a02fbad77bbb56e2f7ce2e Gitweb: https://git.kernel.org/tip/1b6266ebe3da8198e9a02fbad77bbb56e2f7ce2e Author: Sinan Kaya <[email protected]> AuthorDate: Thu, 2 Aug 2018 23:09:41 -0700 Committer: Thomas Gleixner <[email protected]> CommitDate: Fri, 3 Aug 2018 12:19:08 +0200
watchdog: Reduce message verbosity Code is emitting the following error message during boot on systems without PMU hardware support while probing NMI capability. NMI watchdog: Perf event create on CPU 0 failed with -2 This error is emitted as the perf subsystem returns -ENOENT due to lack of PMUs in the system. It is followed by the warning that NMI watchdog is disabled: NMI watchdog: Perf NMI watchdog permanently disabled While NMI disabled information is useful for ordinary users, seeing a PERF event create failed with error code -2 is not. Reduce the message severity to debug so that if debugging is still possible in case the error code returned by perf is required for analysis. Signed-off-by: Sinan Kaya <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Don Zickus <[email protected]> Cc: Kate Stewart <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Colin Ian King <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599368 Link: https://lkml.kernel.org/r/[email protected] --- kernel/watchdog_hld.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/watchdog_hld.c b/kernel/watchdog_hld.c index e449a23e9d59..1f7020d65d0a 100644 --- a/kernel/watchdog_hld.c +++ b/kernel/watchdog_hld.c @@ -175,8 +175,8 @@ static int hardlockup_detector_event_create(void) evt = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL); if (IS_ERR(evt)) { - pr_info("Perf event create on CPU %d failed with %ld\n", cpu, - PTR_ERR(evt)); + pr_debug("Perf event create on CPU %d failed with %ld\n", cpu, + PTR_ERR(evt)); return PTR_ERR(evt); } this_cpu_write(watchdog_ev, evt);
