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| author | Dirk Behme <dirk.behme@de.bosch.com> | 2016-02-04 18:06:10 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-02-09 11:18:39 +0000 |
| commit | c6b90653f1f7ea383734f8ce9e8df285a0c23f5b (patch) | |
| tree | d9ed3415c8c573894d82331aec651d2077842ecc /drivers/perf | |
| parent | 8d1a0ae724ad74ef7946a45e3b2d3e01f39df02b (diff) | |
| download | lwn-c6b90653f1f7ea383734f8ce9e8df285a0c23f5b.tar.gz lwn-c6b90653f1f7ea383734f8ce9e8df285a0c23f5b.zip | |
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>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/arm_pmu.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index eb5bee07526b..ca63a452393a 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -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; } |