linux-kernel - [RFC PATCH v3 0/3] PCI/ASPM: Remove struct aspm

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Message-Id: <20210929004116.20650-1-refactormyself@gmail.com>
Date:   Wed, 29 Sep 2021 02:41:13 +0200
From:   "Saheed O. Bolarinwa" <refactormyself@...il.com>
To:     helgaas@...nel.org
Cc:     "Bolarinwa O. Saheed" <refactormyself@...il.com>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v3 0/3] PCI/ASPM: Remove struct aspm_latency

From: "Bolarinwa O. Saheed" <refactormyself@...il.com>

To validate and set link latency capability, `struct aspm_latency` and
related members defined within `struct pcie_link_state` are used.
However, since there are not many access to theses values, it is
possible to directly access and compute these values.

Doing this will also reduce the dependency on `struct pcie_link_state`.

The series removes `struct aspm_latency` and related members within
`struct pcie_link_state`. All latencies are now calculated when needed.

VERSION CHANGES:
- v2:
	- directly access downstream by calling `pci_function_0()`
	  instead of using the `struct pcie_link_state`
- v3(this version):
	- rebase on Linux 5.15-rc2

MERGE NOTICE:
These series are based on 
	'commit e4e737bb5c17 ("Linux 5.15-rc2")'

Saheed O. Bolarinwa (3):
  PCI/ASPM: Remove link latencies cached within struct pcie_link_state
  PCI/ASPM: Remove struct pcie_link_state.acceptable
  PCI/ASPM: Remove struct aspm_latency

 drivers/pci/pcie/aspm.c | 89 ++++++++++++++++++-----------------------
 1 file changed, 38 insertions(+), 51 deletions(-)

-- 
2.20.1