Messages in this thread | | | Date | Fri, 21 Jul 2023 11:13:57 -0400 | From | Sasha Levin <> | Subject | Re: [PATCH AUTOSEL 6.4 11/12] drivers/perf: hisi: Add support for HiSilicon H60PA and PAv3 PMU driver |
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On Mon, Jul 03, 2023 at 11:14:37AM +0100, Mark Rutland wrote: >On Sun, Jul 02, 2023 at 03:50:56PM -0400, Sasha Levin wrote: >> From: Junhao He <hejunhao3@huawei.com> >> >> [ Upstream commit 1a51688474c0d395b864e98236335fba712e29bf ] >> >> Compared to the original PA device, H60PA offers higher bandwidth. >> The H60PA is a new device and we use HID to differentiate them. >> >> The events supported by PAv3 and PAv2 are different. The PAv3 PMU >> removed some events which are supported by PAv2 PMU. The older PA >> PMU driver will probe v3 as v2. Therefore PA events displayed by >> "perf list" cannot work properly. We add the HISI0275 HID for PAv3 >> PMU to distinguish different. >> >> For each H60PA PMU, except for the overflow interrupt register, other >> functions of the H60PA PMU are the same as the original PA PMU module. >> It has 8-programable counters and each counter is free-running. >> Interrupt is supported to handle counter (64-bits) overflow. >> >> Signed-off-by: Junhao He <hejunhao3@huawei.com> >> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> >> Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> >> Acked-by: Mark Rutland <mark.rutland@arm.com> >> Link: https://lore.kernel.org/r/20230615125926.29832-2-hejunhao3@huawei.com >> Signed-off-by: Will Deacon <will@kernel.org> >> Signed-off-by: Sasha Levin <sashal@kernel.org> >> --- >> drivers/perf/hisilicon/hisi_uncore_pa_pmu.c | 127 +++++++++++++++++--- >> drivers/perf/hisilicon/hisi_uncore_pmu.h | 8 ++ >> 2 files changed, 120 insertions(+), 15 deletions(-) > >Why is this being backported to stable? > >This patch adds supoprt for new HW, and is clearly not a fix, so it's not clear >to me why it has been selected.
I'll drop it, thanks.
-- Thanks, Sasha
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