From: Serge Semin <Sergey.Semin@baikalelectronics.ru>
To: "Bjorn Helgaas" <bhelgaas@google.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Cai Huoqing" <cai.huoqing@linux.dev>,
"Jingoo Han" <jingoohan1@gmail.com>,
"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>,
"Vinod Koul" <vkoul@kernel.org>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com>,
"Rob Herring" <robh@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>
Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru>,
Serge Semin <fancer.lancer@gmail.com>,
Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,
Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,
<linux-pci@vger.kernel.org>, <dmaengine@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH RESEND v2 04/11] PCI: bt1: Enable async probe type
Date: Mon, 13 Mar 2023 23:08:08 +0300 [thread overview]
Message-ID: <20230313200816.30105-5-Sergey.Semin@baikalelectronics.ru> (raw)
In-Reply-To: <20230313200816.30105-1-Sergey.Semin@baikalelectronics.ru>
It's safe to enable the asyncronous probe type since the PCIe peripheral
devices probing order isn't essential for booting the system. Moreover
enabling that feature saves 0.5 seconds of bootup time if no any device
attached to the PCIe root port. It's a significant performance gain seeing
the total bootup time takes about 3 seconds.
Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
drivers/pci/controller/dwc/pcie-bt1.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pci/controller/dwc/pcie-bt1.c b/drivers/pci/controller/dwc/pcie-bt1.c
index 95a723a6fd46..e36a20bf82cf 100644
--- a/drivers/pci/controller/dwc/pcie-bt1.c
+++ b/drivers/pci/controller/dwc/pcie-bt1.c
@@ -638,6 +638,7 @@ static struct platform_driver bt1_pcie_driver = {
.driver = {
.name = "bt1-pcie",
.of_match_table = bt1_pcie_of_match,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
};
module_platform_driver(bt1_pcie_driver);
--
2.39.2
next prev parent reply other threads:[~2023-03-13 20:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-13 20:08 [PATCH RESEND v2 00/11] PCI: dwc: Relatively simple fixes and cleanups Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 01/11] PCI: dwc: Fix port link CSR improper init if CDM check enabled Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 02/11] PCI: dwc: Fix erroneous version type test helper Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 03/11] PCI: dwc: Fix inbound iATU entries out-of-bounds warning message Serge Semin
2023-03-13 20:08 ` Serge Semin [this message]
2023-03-13 20:08 ` [PATCH RESEND v2 05/11] PCI: bt1: Fix printing false error message Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 06/11] PCI: dwc: Drop duplicated fast-link-mode flag unsetting Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 07/11] PCI: dwc: Drop empty line from dw_pcie_link_set_max_speed() Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 08/11] PCI: visconti: Convert to using generic resources getter Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 09/11] MAINTAINERS: Add all generic DW PCIe RP/EP DT-schemas Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 10/11] MAINTAINERS: Add myself as the DW PCIe core reviewer Serge Semin
2023-03-13 20:08 ` [PATCH RESEND v2 11/11] MAINTAINERS: Add myself as the DW eDMA driver reviewer Serge Semin
2023-03-13 21:17 ` [PATCH RESEND v2 00/11] PCI: dwc: Relatively simple fixes and cleanups Bjorn Helgaas
2023-03-13 22:21 ` Serge Semin
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