From: Reinette Chatre <reinette.chatre@intel.com>
To: Shaopeng Tan <tan.shaopeng@fujitsu.com>, <fenghuay@nvidia.com>,
<ben.horgan@arm.com>, <james.morse@arm.com>, <shuah@kernel.org>
Cc: <linux-kselftest@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC PATCH 3/5] kselftests/resctrl: remove unnecessary exclude_idle
Date: Tue, 17 Feb 2026 09:52:39 -0800 [thread overview]
Message-ID: <ef8a9e9e-0d44-4246-ac74-0369b78f39fa@intel.com> (raw)
In-Reply-To: <20260123044034.141247-4-tan.shaopeng@fujitsu.com>
Hi Shaopeng,
On 1/22/26 8:40 PM, Shaopeng Tan wrote:
> The Linux manual states regarding exclude_idle: "While you can currently
> enable this for any event type, it is ignored for all but software events."
> Also, it appears exclude_idle is not supported on Arm.
Just to confirm, does "not supported on Arm" imply that perf_event_open() fails when
exclude_idle is 1? Thus encountering:
EPERM Returned on many (but not all) architectures when an unsupported
exclude_hv, exclude_idle, exclude_user, or exclude_kernel setting is
specified.
Reinette
next prev parent reply other threads:[~2026-02-17 17:52 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-23 4:40 [RFC PATCH 0/5] kselftest/resctrl: Enable CAT and NONCONT_CAT tests on ARM Shaopeng Tan
2026-01-23 4:40 ` [RFC PATCH 1/5] kselftests/resctrl: Detect the ARM architecture Shaopeng Tan
2026-02-17 17:49 ` Reinette Chatre
2026-01-23 4:40 ` [RFC PATCH 2/5] kselftests/resctrl: enable noncont_cat for MPAM Shaopeng Tan
2026-02-17 17:52 ` Reinette Chatre
2026-01-23 4:40 ` [RFC PATCH 3/5] kselftests/resctrl: remove unnecessary exclude_idle Shaopeng Tan
2026-02-17 17:52 ` Reinette Chatre [this message]
2026-03-02 7:35 ` Shaopeng Tan (Fujitsu)
2026-01-23 4:40 ` [RFC PATCH 4/5] kselftests/resctrl: set shareable_mask to zero if all bits are shared between software and hardware Shaopeng Tan
2026-02-17 17:52 ` Reinette Chatre
2026-01-23 4:40 ` [RFC PATCH 5/5] kselftests/resctrl: Add support for CAT test on ARM Shaopeng Tan
2026-01-27 20:47 ` Ben Horgan
2026-01-27 20:40 ` [RFC PATCH 0/5] kselftest/resctrl: Enable CAT and NONCONT_CAT tests " Ben Horgan
2026-03-02 7:26 ` Shaopeng Tan (Fujitsu)
2026-03-03 17:10 ` Ben Horgan
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