[PATCH] perf/arm-cmn: Fix the unhandled overflow status of counter 4 to 7
flat view
STALE1109d
LANDED
From: Jing Zhang <renyu.zj@linux.alibaba.com>
Date: 2023-09-25 03:22:57
Also in:
lkml
Subsystem:
arm interconnect pmu drivers, arm pmu profiling and debugging, the rest · Maintainers:
Robin Murphy, Will Deacon, Mark Rutland, Linus Torvalds
Landed in mainline as 7f949f6f54ff on 2023-09-29.
The register por_dt_pmovsr Bits[7:0] indicates overflow from counters 7
to 0. But in arm_cmn_handle_irq(), only handled the overflow status of
Bits[3:0] which results in unhandled overflow status of counters 4 to 7.
So let the overflow status of DTC counters 4 to 7 to be handled.
Fixes: 0ba64770a2f2 ("perf: Add Arm CMN-600 PMU driver")
Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com>
---
drivers/perf/arm-cmn.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index 913dc04..6b50bc5 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c@@ -1972,7 +1972,7 @@ static irqreturn_t arm_cmn_handle_irq(int irq, void *dev_id) u64 delta; int i; - for (i = 0; i < CMN_DTM_NUM_COUNTERS; i++) { + for (i = 0; i < CMN_DT_NUM_COUNTERS; i++) { if (status & (1U << i)) { ret = IRQ_HANDLED; if (WARN_ON(!dtc->counters[i]))
--
1.8.3.1
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