[PATCH] pci_proc_domain

From: Matthew Wilcox
Date: Mon Jan 17 2005 - 14:24:55 EST

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There's no need for the architectures to know how to name busses,
so replace pci_name_bus with pci_proc_domain -- a predicate to allow
architectures to choose whether domains are included in /proc/bus/pci
or not. I've converted all architectures but only tested ia64 and a
CONFIG_PCI_DOMAINS=n build.

Index: linux-2.6/drivers/pci/proc.c
===================================================================
RCS file: /var/cvs/linux-2.6/drivers/pci/proc.c,v
retrieving revision 1.6
diff -u -p -r1.6 proc.c
--- linux-2.6/drivers/pci/proc.c 21 Oct 2004 18:59:15 -0000 1.6
+++ linux-2.6/drivers/pci/proc.c 17 Jan 2005 19:03:01 -0000
@@ -384,26 +384,32 @@ static struct proc_dir_entry *proc_bus_p
int pci_proc_attach_device(struct pci_dev *dev)
{
struct pci_bus *bus = dev->bus;
- struct proc_dir_entry *de, *e;
+ struct proc_dir_entry *e;
char name[16];

if (!proc_initialized)
return -EACCES;

- if (!(de = bus->procdir)) {
- if (pci_name_bus(name, bus))
- return -EEXIST;
- de = bus->procdir = proc_mkdir(name, proc_bus_pci_dir);
- if (!de)
+ if (!bus->procdir) {
+ if (pci_proc_domain(bus)) {
+ sprintf(name, "%04x:%02x", pci_domain_nr(bus),
+ bus->number);
+ } else {
+ sprintf(name, "%02x", bus->number);
+ }
+ bus->procdir = proc_mkdir(name, proc_bus_pci_dir);
+ if (!bus->procdir)
return -ENOMEM;
}
+
sprintf(name, "%02x.%x", PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
- e = dev->procent = create_proc_entry(name, S_IFREG | S_IRUGO | S_IWUSR, de);
+ e = create_proc_entry(name, S_IFREG | S_IRUGO | S_IWUSR, bus->procdir);
if (!e)
return -ENOMEM;
e->proc_fops = &proc_bus_pci_operations;
e->data = dev;
e->size = dev->cfg_size;
+ dev->procent = e;

return 0;
}
Index: linux-2.6/arch/ppc64/kernel/pci.c
===================================================================
RCS file: /var/cvs/linux-2.6/arch/ppc64/kernel/pci.c,v
retrieving revision 1.12
diff -u -p -r1.12 pci.c
--- linux-2.6/arch/ppc64/kernel/pci.c 12 Jan 2005 20:15:46 -0000 1.12
+++ linux-2.6/arch/ppc64/kernel/pci.c 17 Jan 2005 19:03:02 -0000
@@ -300,19 +300,15 @@ int pci_domain_nr(struct pci_bus *bus)

EXPORT_SYMBOL(pci_domain_nr);

-/* Set the name of the bus as it appears in /proc/bus/pci */
-int pci_name_bus(char *name, struct pci_bus *bus)
+/* Decide whether to display the domain number in /proc */
+int pci_proc_domain(struct pci_bus *bus)
{
-#ifndef CONFIG_PPC_ISERIES
+#ifdef CONFIG_PPC_ISERIES
+ return 0;
+#else
struct pci_controller *hose = pci_bus_to_host(bus);
-
- if (hose->buid)
- sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
- else
+ return hose->buid;
#endif
- sprintf(name, "%02x", bus->number);
-
- return 0;
}

/*
Index: linux-2.6/arch/sparc64/kernel/pci.c
===================================================================
RCS file: /var/cvs/linux-2.6/arch/sparc64/kernel/pci.c,v
retrieving revision 1.7
diff -u -p -r1.7 pci.c
--- linux-2.6/arch/sparc64/kernel/pci.c 4 Dec 2004 07:02:25 -0000 1.7
+++ linux-2.6/arch/sparc64/kernel/pci.c 17 Jan 2005 19:03:02 -0000
@@ -794,12 +794,6 @@ int pci_domain_nr(struct pci_bus *pbus)
}
EXPORT_SYMBOL(pci_domain_nr);

-int pci_name_bus(char *name, struct pci_bus *bus)
-{
- sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
- return 0;
-}
-
int pcibios_prep_mwi(struct pci_dev *dev)
{
/* We set correct PCI_CACHE_LINE_SIZE register values for every
Index: linux-2.6/include/asm-alpha/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/asm-alpha/pci.h,v
retrieving revision 1.7
diff -u -p -r1.7 pci.h
--- linux-2.6/include/asm-alpha/pci.h 13 Sep 2004 15:23:56 -0000 1.7
+++ linux-2.6/include/asm-alpha/pci.h 17 Jan 2005 19:03:02 -0000
@@ -228,17 +228,10 @@ extern void pcibios_resource_to_bus(stru

#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

-static inline int
-pci_name_bus(char *name, struct pci_bus *bus)
+static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
-
- if (likely(hose->need_domain_info == 0)) {
- sprintf(name, "%02x", bus->number);
- } else {
- sprintf(name, "%04x:%02x", hose->index, bus->number);
- }
- return 0;
+ return hose->need_domain_info;
}

static inline void
Index: linux-2.6/include/asm-ia64/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/asm-ia64/pci.h,v
retrieving revision 1.8
diff -u -p -r1.8 pci.h
--- linux-2.6/include/asm-ia64/pci.h 29 Nov 2004 19:56:42 -0000 1.8
+++ linux-2.6/include/asm-ia64/pci.h 17 Jan 2005 19:03:02 -0000
@@ -107,14 +107,9 @@ struct pci_controller {

extern struct pci_ops pci_root_ops;

-static inline int pci_name_bus(char *name, struct pci_bus *bus)
+static inline int pci_proc_domain(struct pci_bus *bus)
{
- if (pci_domain_nr(bus) == 0) {
- sprintf(name, "%02x", bus->number);
- } else {
- sprintf(name, "%04x:%02x", pci_domain_nr(bus), bus->number);
- }
- return 0;
+ return (pci_domain_nr(bus) != 0);
}

static inline void pcibios_add_platform_entries(struct pci_dev *dev)
Index: linux-2.6/include/asm-mips/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/asm-mips/pci.h,v
retrieving revision 1.9
diff -u -p -r1.9 pci.h
--- linux-2.6/include/asm-mips/pci.h 4 Dec 2004 07:02:57 -0000 1.9
+++ linux-2.6/include/asm-mips/pci.h 17 Jan 2005 19:03:02 -0000
@@ -137,17 +137,10 @@ extern void pcibios_resource_to_bus(stru

#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

-static inline int
-pci_name_bus(char *name, struct pci_bus *bus)
+static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
-
- if (likely(hose->need_domain_info == 0)) {
- sprintf(name, "%02x", bus->number);
- } else {
- sprintf(name, "%04x:%02x", hose->index, bus->number);
- }
- return 0;
+ return hose->need_domain_info;
}

#endif /* CONFIG_PCI_DOMAINS */
Index: linux-2.6/include/asm-ppc/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/asm-ppc/pci.h,v
retrieving revision 1.11
diff -u -p -r1.11 pci.h
--- linux-2.6/include/asm-ppc/pci.h 16 Jun 2004 18:48:12 -0000 1.11
+++ linux-2.6/include/asm-ppc/pci.h 17 Jan 2005 19:03:02 -0000
@@ -79,9 +79,8 @@ extern unsigned long pci_bus_to_phys(uns
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

/* Set the name of the bus as it appears in /proc/bus/pci */
-static inline int pci_name_bus(char *name, struct pci_bus *bus)
+static inline int pci_proc_domain(struct pci_bus *bus)
{
- sprintf(name, "%02x", bus->number);
return 0;
}

Index: linux-2.6/include/asm-ppc64/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/asm-ppc64/pci.h,v
retrieving revision 1.12
diff -u -p -r1.12 pci.h
--- linux-2.6/include/asm-ppc64/pci.h 29 Nov 2004 19:56:45 -0000 1.12
+++ linux-2.6/include/asm-ppc64/pci.h 17 Jan 2005 19:03:02 -0000
@@ -190,8 +190,8 @@ static inline int pci_dma_mapping_error(

extern int pci_domain_nr(struct pci_bus *bus);

-/* Set the name of the bus as it appears in /proc/bus/pci */
-extern int pci_name_bus(char *name, struct pci_bus *bus);
+/* Decide whether to display the domain number in /proc */
+extern int pci_proc_domain(struct pci_bus *bus);

struct vm_area_struct;
/* Map a range of PCI memory or I/O space for a device into user space */
Index: linux-2.6/include/asm-sparc64/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/asm-sparc64/pci.h,v
retrieving revision 1.9
diff -u -p -r1.9 pci.h
--- linux-2.6/include/asm-sparc64/pci.h 29 Nov 2004 19:56:46 -0000 1.9
+++ linux-2.6/include/asm-sparc64/pci.h 17 Jan 2005 19:03:02 -0000
@@ -223,7 +223,10 @@ static inline int pci_dma_mapping_error(
/* Return the index of the PCI controller for device PDEV. */

extern int pci_domain_nr(struct pci_bus *bus);
-extern int pci_name_bus(char *name, struct pci_bus *bus);
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+ return 1;
+}

/* Platform support for /proc/bus/pci/X/Y mmap()s. */

Index: linux-2.6/include/linux/pci.h
===================================================================
RCS file: /var/cvs/linux-2.6/include/linux/pci.h,v
retrieving revision 1.25
diff -u -p -r1.25 pci.h
--- linux-2.6/include/linux/pci.h 12 Jan 2005 20:17:57 -0000 1.25
+++ linux-2.6/include/linux/pci.h 17 Jan 2005 19:03:02 -0000
@@ -966,9 +966,8 @@ static inline int pci_enable_wake(struct
*/
#ifndef CONFIG_PCI_DOMAINS
static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
-static inline int pci_name_bus(char *name, struct pci_bus *bus)
+static inline int pci_proc_domain(struct pci_bus *bus)
{
- sprintf(name, "%02x", bus->number);
return 0;
}
#endif

--
"Next the statesmen will invent cheap lies, putting the blame upon
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince
himself that the war is just, and will thank God for the better sleep
he enjoys after this process of grotesque self-deception." -- Mark Twain
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Next message: Russ Anderson: "Re: [patch] Remove limit on MCA recoveries"
Previous message: Jean Delvare: "Re: 2.6.10-mm2: it87 sensor driver stops CPU fan"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]