From: Yicong Yang Date: Thu, 29 Aug 2024 09:03:31 +0000 (+0800) Subject: drivers/perf: hisi_pcie: Fix TLP headers bandwidth counting X-Git-Tag: v6.6.54~505 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=666a46a90f186dd1860d84ce4dd1ec1aab0d37d8;p=thirdparty%2Fkernel%2Fstable.git drivers/perf: hisi_pcie: Fix TLP headers bandwidth counting [ Upstream commit 17bf68aeb3642221e3e770399b5a52f370747ac1 ] We make the initial value of event ctrl register as HISI_PCIE_INIT_SET and modify according to the user options. This will make TLP headers bandwidth only counting never take effect since HISI_PCIE_INIT_SET configures to count the TLP payloads bandwidth. Fix this by making the initial value of event ctrl register as 0. Fixes: 17d573984d4d ("drivers/perf: hisi: Add TLP filter support") Signed-off-by: Yicong Yang Acked-by: Jonathan Cameron Link: https://lore.kernel.org/r/20240829090332.28756-3-yangyicong@huawei.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c index 570ae69c38ec0..4a902da5c1d49 100644 --- a/drivers/perf/hisilicon/hisi_pcie_pmu.c +++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c @@ -221,7 +221,7 @@ static void hisi_pcie_pmu_config_filter(struct perf_event *event) struct hisi_pcie_pmu *pcie_pmu = to_pcie_pmu(event->pmu); struct hw_perf_event *hwc = &event->hw; u64 port, trig_len, thr_len, len_mode; - u64 reg = HISI_PCIE_INIT_SET; + u64 reg = 0; /* Config HISI_PCIE_EVENT_CTRL according to event. */ reg |= FIELD_PREP(HISI_PCIE_EVENT_M, hisi_pcie_get_real_event(event));