From: Alexander Gordeev <agordeev@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: x86@kernel.org, linux-pci@vger.kernel.org,
linux-ide@vger.kernel.org, Tejun Heo <tj@kernel.org>,
Ingo Molnar <mingo@kernel.org>, Joerg Roedel <joro@8bytes.org>,
Jan Beulich <JBeulich@suse.com>,
Bjorn Helgaas <bhelgaas@google.com>
Subject: [PATCH v2 0/6] AHCI: Conserve interrupts with pci_enable_msi_block_part() interface
Date: Thu, 5 Sep 2013 14:51:39 +0200 [thread overview]
Message-ID: <cover.1378383792.git.agordeev@redhat.com> (raw)
This series is aimed to conserve on othewise wasted interrupt
resources for 10 of 16 unused MSI vectors for AHCI devices on
Intel chipsets.
Changes from v1:
- roundup_pow_of_two() and is_power_of_2() functions used
- patch 2/6 generic pci_get_msi_cap() interface introduced
- patch 4/6 MMC reg. value used to initialize multiple MSIs;
Fallback to single MSI mode is simplified
- patch 5/6 sanity check for MRSM bit added
Alexander Gordeev (6):
1/6 PCI/MSI: Introduce pci_enable_msi_block_part() interface
2/6 PCI/MSI: Factor out pci_get_msi_cap() interface
3/6 MSI/x86: Support pci_enable_msi_block_part() interface
4/6 AHCI: Conserve interrupts with pci_enable_msi_block_part() interface
5/6 AHCI: Check MRSM bit when multiple MSIs enabled
6/6 PCI/MSI: Get rid of pci_enable_msi_block_auto() interface
Documentation/PCI/MSI-HOWTO.txt | 68 ++++++++++++++++-------
arch/mips/pci/msi-octeon.c | 2 +-
arch/powerpc/kernel/msi.c | 4 +-
arch/s390/pci/pci.c | 2 +-
arch/x86/include/asm/pci.h | 8 ++-
arch/x86/include/asm/x86_init.h | 3 +-
arch/x86/kernel/apic/io_apic.c | 3 +-
drivers/ata/ahci.c | 60 ++++++++++++++------
drivers/ata/ahci.h | 1 +
drivers/iommu/irq_remapping.c | 14 +++---
drivers/pci/msi.c | 115 ++++++++++++++++++++++-----------------
include/linux/msi.h | 5 +-
include/linux/pci.h | 13 ++++-
13 files changed, 188 insertions(+), 110 deletions(-)
--
1.7.7.6
--
Regards,
Alexander Gordeev
agordeev@redhat.com
next reply other threads:[~2013-09-05 13:42 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-05 12:51 Alexander Gordeev [this message]
2013-09-05 12:52 ` [PATCH v2 1/6] PCI/MSI: Introduce pci_enable_msi_block_part() interface Alexander Gordeev
2013-09-05 12:52 ` [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface Alexander Gordeev
2013-09-05 13:09 ` Tejun Heo
2013-09-05 15:03 ` Alexander Gordeev
2013-09-05 15:04 ` Tejun Heo
2013-09-05 15:40 ` Alexander Gordeev
2013-09-05 15:44 ` Tejun Heo
2013-09-05 18:54 ` Alexander Gordeev
2013-09-05 20:06 ` Tejun Heo
2013-09-06 16:01 ` Bjorn Helgaas
2013-09-06 16:06 ` Tejun Heo
2013-09-06 23:32 ` Bjorn Helgaas
2013-09-09 15:20 ` Alexander Gordeev
2013-09-09 15:22 ` [PATCH 1/9] PCI/MSI/PPC: Fix wrong RTAS error code reporting Alexander Gordeev
2013-09-09 15:22 ` [PATCH 2/9] PCI/MSI/PPC: Make return values only 0/-errno when MSIs allocated Alexander Gordeev
2013-09-09 15:24 ` [PATCH 3/9] PCI/MSI/x86: " Alexander Gordeev
2013-09-09 15:24 ` [PATCH 4/9] PCI/MSI/MIPS: " Alexander Gordeev
2013-09-09 15:25 ` [PATCH 2/9] PCI/MSI/PPC: Make return values only 0/-errno when MSIs allocated[PATCH 5/9] PCI/MSI/s390: " Alexander Gordeev
2013-09-09 15:38 ` scrap this one Alexander Gordeev
2013-09-09 15:26 ` [PATCH 5/9] PCI/MSI/s390: Make return values only 0/-errno when MSIs allocated Alexander Gordeev
2013-09-10 12:42 ` Sergei Shtylyov
2013-09-10 13:09 ` Alexander Gordeev
2013-09-09 15:27 ` [PATCH 6/9] PCI/MSI/s390: Remove superfluous check of MSI type Alexander Gordeev
2013-09-09 15:28 ` [PATCH 7/9] PCI/MSI/s390: Make return values only 0/-errno when MSIs allocated Alexander Gordeev
2013-09-09 15:29 ` [PATCH 8/9] PCI/MSI: Fix return value when populate_msi_sysfs() failed Alexander Gordeev
2013-09-09 15:29 ` [PATCH 9/9] PCI/MSI: Make return values only 0/-errno when MSIs allocated Alexander Gordeev
2013-09-09 15:37 ` [PATCH v2 2/6] PCI/MSI: Factor out pci_get_msi_cap() interface Tejun Heo
2013-09-09 15:45 ` Alexander Gordeev
2013-09-16 10:22 ` Alexander Gordeev
2013-09-16 10:22 ` Alexander Gordeev
2013-09-17 14:30 ` Michael Ellerman
2013-09-17 14:30 ` Michael Ellerman
2013-09-18 9:48 ` Alexander Gordeev
2013-09-18 9:48 ` Alexander Gordeev
2013-09-18 14:22 ` Tejun Heo
2013-09-18 14:22 ` Tejun Heo
2013-09-18 16:50 ` Alexander Gordeev
2013-09-18 16:50 ` Alexander Gordeev
2013-09-20 8:24 ` Alexander Gordeev
2013-09-20 8:24 ` Alexander Gordeev
2013-09-20 12:27 ` Tejun Heo
2013-09-20 12:27 ` Tejun Heo
2013-09-25 18:02 ` Bjorn Helgaas
2013-09-25 18:02 ` Bjorn Helgaas
2013-09-25 20:58 ` Alexander Gordeev
2013-09-25 20:58 ` Alexander Gordeev
2013-09-25 21:00 ` Tejun Heo
2013-09-25 21:00 ` Tejun Heo
2013-09-26 7:46 ` Alexander Gordeev
2013-09-26 7:46 ` Alexander Gordeev
2013-09-26 8:58 ` David Laight
2013-09-26 8:58 ` David Laight
2013-09-26 8:58 ` David Laight
2013-09-26 10:45 ` Alexander Gordeev
2013-09-26 10:45 ` Alexander Gordeev
2013-09-26 11:34 ` David Laight
2013-09-26 11:34 ` David Laight
2013-09-26 11:34 ` David Laight
2013-09-26 12:13 ` Alexander Gordeev
2013-09-26 12:13 ` Alexander Gordeev
2013-09-26 13:11 ` Tejun Heo
2013-09-26 13:11 ` Tejun Heo
2013-09-26 14:39 ` Alexander Gordeev
2013-09-26 14:39 ` Alexander Gordeev
2013-09-26 14:42 ` Tejun Heo
2013-09-26 14:42 ` Tejun Heo
2013-10-01 7:19 ` Michael Ellerman
2013-10-01 7:19 ` Michael Ellerman
2013-09-20 12:26 ` Tejun Heo
2013-09-20 12:26 ` Tejun Heo
2013-10-01 7:26 ` Michael Ellerman
2013-10-01 7:26 ` Michael Ellerman
2013-10-01 7:35 ` Michael Ellerman
2013-10-01 7:35 ` Michael Ellerman
2013-10-01 11:55 ` Tejun Heo
2013-10-01 11:55 ` Tejun Heo
2013-10-02 2:33 ` Michael Ellerman
2013-10-02 2:33 ` Michael Ellerman
2013-10-02 3:23 ` Tejun Heo
2013-10-02 3:23 ` Tejun Heo
2013-09-26 12:32 ` Mark Lord
2013-09-26 12:32 ` Mark Lord
2013-09-26 13:03 ` Alexander Gordeev
2013-09-26 13:03 ` Alexander Gordeev
2013-10-02 2:46 ` Mark Lord
2013-10-02 2:46 ` Mark Lord
2013-10-02 7:26 ` Alexander Gordeev
2013-10-02 7:26 ` Alexander Gordeev
2013-12-18 18:26 ` Bjorn Helgaas
2013-12-18 18:26 ` Bjorn Helgaas
2013-10-01 7:51 ` Michael Ellerman
2013-10-01 7:51 ` Michael Ellerman
2013-10-01 10:35 ` Alexander Gordeev
2013-10-01 10:35 ` Alexander Gordeev
2013-10-02 2:43 ` Michael Ellerman
2013-10-02 2:43 ` Michael Ellerman
2013-10-02 7:10 ` Alexander Gordeev
2013-10-02 7:10 ` Alexander Gordeev
2013-09-06 13:17 ` Alexander Gordeev
2013-09-05 12:53 ` [PATCH v2 3/6] MSI/x86: Support pci_enable_msi_block_part() interface Alexander Gordeev
2013-09-05 12:53 ` [PATCH v2 4/6] AHCI: Conserve interrupts with " Alexander Gordeev
2013-09-05 13:10 ` Tejun Heo
2013-09-05 15:23 ` Alexander Gordeev
2013-09-05 12:54 ` [PATCH v2 5/6] AHCI: Check MRSM bit when multiple MSIs enabled Alexander Gordeev
2013-09-05 13:11 ` Tejun Heo
2013-09-05 15:25 ` Alexander Gordeev
2013-09-05 14:32 ` Sergei Shtylyov
2013-09-05 12:54 ` [PATCH v2 6/6] PCI/MSI: Get rid of pci_enable_msi_block_auto() interface Alexander Gordeev
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