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| author | Jing Zhang <renyu.zj@linux.alibaba.com> | 2023-09-25 06:22:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-20 00:08:50 +0300 |
| commit | 1c8f6c7b837568e755cebe325d56c90759035b24 (patch) | |
| tree | db73c684e7b057e65a1b75058e5ac7ef7439291a /drivers/perf | |
| parent | 3aade96e0c93e5999bfaf77964b9b582f86b4302 (diff) | |
| download | linux-1c8f6c7b837568e755cebe325d56c90759035b24.tar.xz | |
perf/arm-cmn: Fix the unhandled overflow status of counter 4 to 7
[ Upstream commit 7f949f6f54ff593123ab95b6247bfa4542a65580 ]
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>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/1695612152-123633-1-git-send-email-renyu.zj@linux.alibaba.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/arm-cmn.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 90008e24d1cc..cfb36adf4eb8 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -1822,7 +1822,7 @@ 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])) |