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author | Yinghai Lu <yinghai@kernel.org> | 2011-05-12 17:11:40 -0700 |
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committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-05-21 12:17:13 -0700 |
commit | dc2c2c9dd513dec6c17df04e8abff795e20a5271 (patch) | |
tree | 096e73fc6775edbe389c687df08f96bd85788d02 /drivers/pci/pci-sysfs.c | |
parent | b9d320fcb6259baffaeaf93a5fce252cd09333d6 (diff) | |
download | linux-dc2c2c9dd513dec6c17df04e8abff795e20a5271.tar.gz linux-dc2c2c9dd513dec6c17df04e8abff795e20a5271.tar.bz2 linux-dc2c2c9dd513dec6c17df04e8abff795e20a5271.zip |
PCI/sysfs: move bus cpuaffinity to class dev_attrs
Requested by Greg KH to fix a race condition in the creating of PCI bus
cpuaffinity files.
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci-sysfs.c')
-rw-r--r-- | drivers/pci/pci-sysfs.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c690abc0e5b8..7bcf12adced7 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -108,6 +108,40 @@ static ssize_t local_cpulist_show(struct device *dev, return len; } +/* + * PCI Bus Class Devices + */ +static ssize_t pci_bus_show_cpuaffinity(struct device *dev, + int type, + struct device_attribute *attr, + char *buf) +{ + int ret; + const struct cpumask *cpumask; + + cpumask = cpumask_of_pcibus(to_pci_bus(dev)); + ret = type ? + cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask) : + cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask); + buf[ret++] = '\n'; + buf[ret] = '\0'; + return ret; +} + +static inline ssize_t pci_bus_show_cpumaskaffinity(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return pci_bus_show_cpuaffinity(dev, 0, attr, buf); +} + +static inline ssize_t pci_bus_show_cpulistaffinity(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return pci_bus_show_cpuaffinity(dev, 1, attr, buf); +} + /* show resources */ static ssize_t resource_show(struct device * dev, struct device_attribute *attr, char * buf) @@ -370,6 +404,8 @@ struct device_attribute pcibus_dev_attrs[] = { #ifdef CONFIG_HOTPLUG __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_bus_rescan_store), #endif + __ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpumaskaffinity, NULL), + __ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL), __ATTR_NULL, }; |