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| author | David S. Miller <davem@davemloft.net> | 2012-06-29 00:37:00 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-29 00:37:00 (GMT) |
| commit | b26d344c6b87058ae3e8f919a18580abfc4204eb (patch) | |
| tree | ff7026df8e8715e3c63d0ff4ff697a9fac6323fb /kernel/watchdog.c | |
| parent | 82aee5d7c01fd1a398e938e496e6cb8841775f91 (diff) | |
| parent | 76fbc247b9aebc30f6d2c8ec1f69edcb68eaa328 (diff) | |
| download | linux-b26d344c6b87058ae3e8f919a18580abfc4204eb.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/caif/caif_hsi.c
drivers/net/usb/qmi_wwan.c
The qmi_wwan merge was trivial.
The caif_hsi.c, on the other hand, was not. It's a conflict between
1c385f1fdf6f9c66d982802cd74349c040980b50 ("caif-hsi: Replace platform
device with ops structure.") in the net-next tree and commit
39abbaef19cd0a30be93794aa4773c779c3eb1f3 ("caif-hsi: Postpone init of
HIS until open()") in the net tree.
I did my best with that one and will ask Sjur to check it out.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/watchdog.c')
| -rw-r--r-- | kernel/watchdog.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index e5e1d85..4b1dfba 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -372,6 +372,13 @@ static int watchdog(void *unused) #ifdef CONFIG_HARDLOCKUP_DETECTOR +/* + * People like the simple clean cpu node info on boot. + * Reduce the watchdog noise by only printing messages + * that are different from what cpu0 displayed. + */ +static unsigned long cpu0_err; + static int watchdog_nmi_enable(int cpu) { struct perf_event_attr *wd_attr; @@ -390,11 +397,21 @@ static int watchdog_nmi_enable(int cpu) /* Try to register using hardware perf events */ event = perf_event_create_kernel_counter(wd_attr, cpu, NULL, watchdog_overflow_callback, NULL); + + /* save cpu0 error for future comparision */ + if (cpu == 0 && IS_ERR(event)) + cpu0_err = PTR_ERR(event); + if (!IS_ERR(event)) { - pr_info("enabled, takes one hw-pmu counter.\n"); + /* only print for cpu0 or different than cpu0 */ + if (cpu == 0 || cpu0_err) + pr_info("enabled on all CPUs, permanently consumes one hw-PMU counter.\n"); goto out_save; } + /* skip displaying the same error again */ + if (cpu > 0 && (PTR_ERR(event) == cpu0_err)) + return PTR_ERR(event); /* vary the KERN level based on the returned errno */ if (PTR_ERR(event) == -EOPNOTSUPP) |