From: Jing Zhang Date: Mon, 25 Sep 2023 03:22:32 +0000 (+0800) Subject: perf/arm-cmn: Fix the unhandled overflow status of counter 4 to 7 X-Git-Tag: v6.6.17~3800^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7f949f6f54ff593123ab95b6247bfa4542a65580;p=platform%2Fkernel%2Flinux-rpi.git perf/arm-cmn: Fix the unhandled overflow status of counter 4 to 7 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 Reviewed-by: Robin Murphy Link: https://lore.kernel.org/r/1695612152-123633-1-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by: Will Deacon --- 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]))