Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754419Ab0AKVa6 (ORCPT ); Mon, 11 Jan 2010 16:30:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752139Ab0AKV1W (ORCPT ); Mon, 11 Jan 2010 16:27:22 -0500 Received: from mail-ew0-f209.google.com ([209.85.219.209]:60356 "EHLO mail-ew0-f209.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751970Ab0AKV1U (ORCPT ); Mon, 11 Jan 2010 16:27:20 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; b=pUm/zth8Wvuxt1Auwjk6tr3ZEWFxAIjALUagOPf3zpH2dYf1tdoKqsyuyTlnzEiO/t ud2e0UynDj1BFfJ3BgPsO77tU7CNy1HK5cpVNOc5airnl1i5iqK/gRPGvlTcJPUa3nl0 1b8Zq8ELILyaUtDOuEEWM6nJK0Fc9CNo+cGZM= From: John Kacur To: Thomas Gleixner , lkml , Ingo Molnar Cc: Clark Williams , John Kacur Subject: [PATCH 07/26] x86: Convert pci_config_lock to raw_spinlock Date: Mon, 11 Jan 2010 22:26:37 +0100 Message-Id: <1263245216-14754-8-git-send-email-jkacur@redhat.com> X-Mailer: git-send-email 1.6.5.2 In-Reply-To: <1263245216-14754-7-git-send-email-jkacur@redhat.com> References: <1263245216-14754-1-git-send-email-jkacur@redhat.com> <1263245216-14754-2-git-send-email-jkacur@redhat.com> <1263245216-14754-3-git-send-email-jkacur@redhat.com> <1263245216-14754-4-git-send-email-jkacur@redhat.com> <1263245216-14754-5-git-send-email-jkacur@redhat.com> <1263245216-14754-6-git-send-email-jkacur@redhat.com> <1263245216-14754-7-git-send-email-jkacur@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7432 Lines: 244 Convert locks that cannot sleep in preempt-rt to raw_spinlocks. See also bde31e2e149219765bb3a4bb3c568fa9623b5521 Signed-off-by: John Kacur --- arch/x86/include/asm/pci_x86.h | 2 +- arch/x86/pci/common.c | 2 +- arch/x86/pci/direct.c | 16 ++++++++-------- arch/x86/pci/mmconfig_32.c | 8 ++++---- arch/x86/pci/numaq_32.c | 8 ++++---- arch/x86/pci/pcbios.c | 8 ++++---- 6 files changed, 22 insertions(+), 22 deletions(-) diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index b4bf9a9..567d009 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -83,7 +83,7 @@ struct irq_routing_table { extern unsigned int pcibios_irq_mask; extern int pcibios_scanned; -extern spinlock_t pci_config_lock; +extern raw_spinlock_t pci_config_lock; extern int (*pcibios_enable_irq)(struct pci_dev *dev); extern void (*pcibios_disable_irq)(struct pci_dev *dev); diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c index d2552c6..b79d322 100644 --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -81,7 +81,7 @@ int pcibios_scanned; * This interrupt-safe spinlock protects all accesses to PCI * configuration space. */ -DEFINE_SPINLOCK(pci_config_lock); +DEFINE_RAW_SPINLOCK(pci_config_lock); static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d) { diff --git a/arch/x86/pci/direct.c b/arch/x86/pci/direct.c index 347d882..bd33620 100644 --- a/arch/x86/pci/direct.c +++ b/arch/x86/pci/direct.c @@ -27,7 +27,7 @@ static int pci_conf1_read(unsigned int seg, unsigned int bus, return -EINVAL; } - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); outl(PCI_CONF1_ADDRESS(bus, devfn, reg), 0xCF8); @@ -43,7 +43,7 @@ static int pci_conf1_read(unsigned int seg, unsigned int bus, break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } @@ -56,7 +56,7 @@ static int pci_conf1_write(unsigned int seg, unsigned int bus, if ((bus > 255) || (devfn > 255) || (reg > 4095)) return -EINVAL; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); outl(PCI_CONF1_ADDRESS(bus, devfn, reg), 0xCF8); @@ -72,7 +72,7 @@ static int pci_conf1_write(unsigned int seg, unsigned int bus, break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } @@ -108,7 +108,7 @@ static int pci_conf2_read(unsigned int seg, unsigned int bus, if (dev & 0x10) return PCIBIOS_DEVICE_NOT_FOUND; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); outb((u8)(0xF0 | (fn << 1)), 0xCF8); outb((u8)bus, 0xCFA); @@ -127,7 +127,7 @@ static int pci_conf2_read(unsigned int seg, unsigned int bus, outb(0, 0xCF8); - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } @@ -147,7 +147,7 @@ static int pci_conf2_write(unsigned int seg, unsigned int bus, if (dev & 0x10) return PCIBIOS_DEVICE_NOT_FOUND; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); outb((u8)(0xF0 | (fn << 1)), 0xCF8); outb((u8)bus, 0xCFA); @@ -166,7 +166,7 @@ static int pci_conf2_write(unsigned int seg, unsigned int bus, outb(0, 0xCF8); - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } diff --git a/arch/x86/pci/mmconfig_32.c b/arch/x86/pci/mmconfig_32.c index 90d5fd4..a3d9c54 100644 --- a/arch/x86/pci/mmconfig_32.c +++ b/arch/x86/pci/mmconfig_32.c @@ -64,7 +64,7 @@ err: *value = -1; if (!base) goto err; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); pci_exp_set_dev_base(base, bus, devfn); @@ -79,7 +79,7 @@ err: *value = -1; *value = mmio_config_readl(mmcfg_virt_addr + reg); break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } @@ -97,7 +97,7 @@ static int pci_mmcfg_write(unsigned int seg, unsigned int bus, if (!base) return -EINVAL; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); pci_exp_set_dev_base(base, bus, devfn); @@ -112,7 +112,7 @@ static int pci_mmcfg_write(unsigned int seg, unsigned int bus, mmio_config_writel(mmcfg_virt_addr + reg, value); break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } diff --git a/arch/x86/pci/numaq_32.c b/arch/x86/pci/numaq_32.c index 8eb295e..2dad4dc 100644 --- a/arch/x86/pci/numaq_32.c +++ b/arch/x86/pci/numaq_32.c @@ -41,7 +41,7 @@ static int pci_conf1_mq_read(unsigned int seg, unsigned int bus, if (!value || (bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255)) return -EINVAL; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); write_cf8(bus, devfn, reg); @@ -66,7 +66,7 @@ static int pci_conf1_mq_read(unsigned int seg, unsigned int bus, break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } @@ -80,7 +80,7 @@ static int pci_conf1_mq_write(unsigned int seg, unsigned int bus, if ((bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255)) return -EINVAL; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); write_cf8(bus, devfn, reg); @@ -105,7 +105,7 @@ static int pci_conf1_mq_write(unsigned int seg, unsigned int bus, break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return 0; } diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c index 1c975cc..2daa521 100644 --- a/arch/x86/pci/pcbios.c +++ b/arch/x86/pci/pcbios.c @@ -161,7 +161,7 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, if (!value || (bus > 255) || (devfn > 255) || (reg > 255)) return -EINVAL; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); switch (len) { case 1: @@ -212,7 +212,7 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return (int)((result & 0xff00) >> 8); } @@ -227,7 +227,7 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, if ((bus > 255) || (devfn > 255) || (reg > 255)) return -EINVAL; - spin_lock_irqsave(&pci_config_lock, flags); + raw_spin_lock_irqsave(&pci_config_lock, flags); switch (len) { case 1: @@ -268,7 +268,7 @@ static int pci_bios_write(unsigned int seg, unsigned int bus, break; } - spin_unlock_irqrestore(&pci_config_lock, flags); + raw_spin_unlock_irqrestore(&pci_config_lock, flags); return (int)((result & 0xff00) >> 8); } -- 1.6.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/