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Code Issues Releases Wiki Activity

perf: arm_spe: Use new PMSIDR_EL1 register enums 

Now that the SPE register definitions include enums for some PMSIDR_EL1
fields, use them in the driver in place of magic values.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220825-arm-spe-v8-7-v4-5-327f860daf28@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Rob Herring 2023-01-09 13:26:21 -06:00 committed by Will Deacon
parent 2d347ac233
commit 05e4c88e2b
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/perf/arm_spe_pmu.c
View File

@ -1006,32 +1006,32 @@ static void __arm_spe_pmu_dev_probe(void *info)
/* This field has a spaced out encoding, so just use a look-up */
fld = FIELD_GET(PMSIDR_EL1_INTERVAL, reg);
switch (fld) {
case 0:
case PMSIDR_EL1_INTERVAL_256:
spe_pmu->min_period = 256;
break;
case 2:
case PMSIDR_EL1_INTERVAL_512:
spe_pmu->min_period = 512;
break;
case 3:
case PMSIDR_EL1_INTERVAL_768:
spe_pmu->min_period = 768;
break;
case 4:
case PMSIDR_EL1_INTERVAL_1024:
spe_pmu->min_period = 1024;
break;
case 5:
case PMSIDR_EL1_INTERVAL_1536:
spe_pmu->min_period = 1536;
break;
case 6:
case PMSIDR_EL1_INTERVAL_2048:
spe_pmu->min_period = 2048;
break;
case 7:
case PMSIDR_EL1_INTERVAL_3072:
spe_pmu->min_period = 3072;
break;
default:
dev_warn(dev, "unknown PMSIDR_EL1.Interval [%d]; assuming 8\n",
fld);
fallthrough;
case 8:
case PMSIDR_EL1_INTERVAL_4096:
spe_pmu->min_period = 4096;
}
@ -1050,10 +1050,10 @@ static void __arm_spe_pmu_dev_probe(void *info)
dev_warn(dev, "unknown PMSIDR_EL1.CountSize [%d]; assuming 2\n",
fld);
fallthrough;
case 2:
case PMSIDR_EL1_COUNTSIZE_12_BIT_SAT:
spe_pmu->counter_sz = 12;
break;
case 3:
case PMSIDR_EL1_COUNTSIZE_16_BIT_SAT:
spe_pmu->counter_sz = 16;
}