Commit c6b90653 authored Feb 04, 2016 by Dirk Behme Committed by Will Deacon Feb 09, 2016

drivers/perf: arm_pmu: make info messages more verbose



On a big.LITTLE system e.g. with Cortex A57 and A53 in case not all cores
are online at PMU probe time we might get

hw perfevents: failed to probe PMU!
hw perfevents: failed to register PMU devices!

making it unclear which cores failed, here.

Add the device tree full name which failed and the error value resulting
in a more verbose and helpful message like

hw perfevents: /soc/pmu_a53: failed to probe PMU! Error -6
hw perfevents: /soc/pmu_a53: failed to register PMU devices! Error -6

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent 8d1a0ae7

drivers/perf/arm_pmu.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -907,7 +907,8 @@ int arm_pmu_device_probe(struct platform_device *pdev,
		}

		if (ret) {
		pr_info("failed to probe PMU!\n");
		pr_info("%s: failed to probe PMU! Error %i\n",
		node->full_name, ret);
		goto out_free;
		}

		@@ -927,7 +928,8 @@ int arm_pmu_device_probe(struct platform_device *pdev,
		out_destroy:
		cpu_pmu_destroy(pmu);
		out_free:
		pr_info("failed to register PMU devices!\n");
		pr_info("%s: failed to register PMU devices! Error %i\n",
		node->full_name, ret);
		kfree(pmu);
		return ret;
		}