6.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yicong Yang <yangyicong@xxxxxxxxxxxxx>
[ 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 <yangyicong@xxxxxxxxxxxxx>
Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240829090332.28756-3-yangyicong@xxxxxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/perf/hisilicon/hisi_pcie_pmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/perf/hisilicon/hisi_pcie_pmu.c b/drivers/perf/hisilicon/hisi_pcie_pmu.c
index fba569a8640cf..f7d6c59d99301 100644
--- a/drivers/perf/hisilicon/hisi_pcie_pmu.c
+++ b/drivers/perf/hisilicon/hisi_pcie_pmu.c
@@ -208,7 +208,7 @@ static void hisi_pcie_pmu_writeq(struct hisi_pcie_pmu *pcie_pmu, u32 reg_offset,
static u64 hisi_pcie_pmu_get_event_ctrl_val(struct perf_event *event)
{
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));
--
2.43.0
