Re: [PATCH v3] watchdog: Quiet down the boot messages

From: Joe Perches
Date: Mon Jun 11 2012 - 17:20:15 EST


On Mon, 2012-06-11 at 17:12 -0400, Dave Jones wrote:
[]
> Would anyone object to compressing these lines too ?
>
> > ... version: 2
> > ... bit width: 40
> > ... generic registers: 2
> > ... value mask: 000000ffffffffff
> > ... max period: 000000007fffffff
> > ... fixed-purpose events: 3
> > ... event mask: 0000000700000003
[]
> diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
[]
> @@ -1389,13 +1389,13 @@ static int __init init_hw_perf_events(void)
> x86_pmu.attr_rdpmc = 1; /* enable userspace RDPMC usage by default */
> x86_pmu_format_group.attrs = x86_pmu.format_attrs;
>
> - pr_info("... version: %d\n", x86_pmu.version);
> - pr_info("... bit width: %d\n", x86_pmu.cntval_bits);
> - pr_info("... generic registers: %d\n", x86_pmu.num_counters);
> - pr_info("... value mask: %016Lx\n", x86_pmu.cntval_mask);
> - pr_info("... max period: %016Lx\n", x86_pmu.max_period);
> - pr_info("... fixed-purpose events: %d\n", x86_pmu.num_counters_fixed);
> - pr_info("... event mask: %016Lx\n", x86_pmu.intel_ctrl);
> + pr_info("... version: %d ", x86_pmu.version);
> + pr_info("bit width: %d ", x86_pmu.cntval_bits);
> + pr_info("generic registers: %d\n", x86_pmu.num_counters);
> + pr_info("... value mask: %016Lx ", x86_pmu.cntval_mask);
> + pr_info("max period: %016Lx ", x86_pmu.max_period);
> + pr_info("fixed-purpose events: %d ", x86_pmu.num_counters_fixed);
> + pr_info("event mask: %016Lx\n", x86_pmu.intel_ctrl);

That wouldn't work.

Every pr_<level> other than pr_cont will always be start a new line.

You want pr_cont for each of these other than the ... ones.

It'd be better too just to use 2 pr_info lines like:

pr_info("... version: %d bit width: %d generic registers: %d\n",
x86_pmu.version, x86_pmu.cntval_bits, x86_pmu.num_counters);
pr_info("... value mask: %016Lx max period: %016Lx fixed-purpose events: %d event mask: %016Lx\n",
x86_pmu.cntval_mask, x86_pmu.max_period,
x86_pmu.num_counters_fixed, x86_pmu.intel_ctrl);

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