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cpumask: use new cpus_scnprintf function 

* Cleaned up references to cpumask_scnprintf() and added new
    cpulist_scnprintf() interfaces where appropriate.

  * Fix some small bugs (or code efficiency improvments) for various uses
    of cpumask_scnprintf.

  * Clean up some checkpatch errors.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis 2008-04-08 11:43:03 -07:00 committed by Ingo Molnar
parent fb0f330e62
commit 39106dcf85
6 changed files with 110 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/base/node.c
View File

@ -19,22 +19,34 @@ static struct sysdev_class node_class = {
};
static ssize_t node_read_cpumap(struct sys_device * dev, char * buf)
static ssize_t node_read_cpumap(struct sys_device *dev, int type, char *buf)
{
struct node *node_dev = to_node(dev);
node_to_cpumask_ptr(mask, node_dev->sysdev.id);
int len;
/* 2004/06/03: buf currently PAGE_SIZE, need > 1 char per 4 bits. */
BUILD_BUG_ON(MAX_NUMNODES/4 > PAGE_SIZE/2);
/* 2008/04/07: buf currently PAGE_SIZE, need 9 chars per 32 bits. */
BUILD_BUG_ON((NR_CPUS/32 * 9) > (PAGE_SIZE-1));
len = cpumask_scnprintf(buf, PAGE_SIZE-2, *mask);
len = type?
cpulist_scnprintf(buf, PAGE_SIZE-2, *mask):
cpumask_scnprintf(buf, PAGE_SIZE-2, *mask);
buf[len++] = '\n';
buf[len] = '\0';
return len;
}
static SYSDEV_ATTR(cpumap, S_IRUGO, node_read_cpumap, NULL);
static inline ssize_t node_read_cpumask(struct sys_device *dev, char *buf)
{
return node_read_cpumap(dev, 0, buf);
}
static inline ssize_t node_read_cpulist(struct sys_device *dev, char *buf)
{
return node_read_cpumap(dev, 1, buf);
}
static SYSDEV_ATTR(cpumap, S_IRUGO, node_read_cpumask, NULL);
static SYSDEV_ATTR(cpulist, S_IRUGO, node_read_cpulist, NULL);
#define K(x) ((x) << (PAGE_SHIFT - 10))
static ssize_t node_read_meminfo(struct sys_device * dev, char * buf)
@ -150,6 +162,7 @@ int register_node(struct node *node, int num, struct node *parent)
if (!error){
sysdev_create_file(&node->sysdev, &attr_cpumap);
sysdev_create_file(&node->sysdev, &attr_cpulist);
sysdev_create_file(&node->sysdev, &attr_meminfo);
sysdev_create_file(&node->sysdev, &attr_numastat);
sysdev_create_file(&node->sysdev, &attr_distance);
@ -167,6 +180,7 @@ int register_node(struct node *node, int num, struct node *parent)
void unregister_node(struct node *node)
{
sysdev_remove_file(&node->sysdev, &attr_cpumap);
sysdev_remove_file(&node->sysdev, &attr_cpulist);
sysdev_remove_file(&node->sysdev, &attr_meminfo);
sysdev_remove_file(&node->sysdev, &attr_numastat);
sysdev_remove_file(&node->sysdev, &attr_distance);

45
drivers/base/topology.c
View File

@ -40,14 +40,37 @@ static ssize_t show_##name(struct sys_device *dev, char *buf) \
return sprintf(buf, "%d\n", topology_##name(cpu)); \
}
#define define_siblings_show_func(name) \
static ssize_t show_##name(struct sys_device *dev, char *buf) \
{ \
ssize_t len = -1; \
unsigned int cpu = dev->id; \
len = cpumask_scnprintf(buf, NR_CPUS+1, topology_##name(cpu)); \
return (len + sprintf(buf + len, "\n")); \
static ssize_t show_cpumap(int type, cpumask_t *mask, char *buf)
{
ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf;
int n = 0;
if (len > 1) {
n = type?
cpulist_scnprintf(buf, len-2, *mask):
cpumask_scnprintf(buf, len-2, *mask);
buf[n++] = '\n';
buf[n] = '\0';
}
return n;
}
#define define_siblings_show_map(name) \
static inline ssize_t show_##name(struct sys_device *dev, char *buf) \
{ \
unsigned int cpu = dev->id; \
return show_cpumap(0, &(topology_##name(cpu)), buf); \
}
#define define_siblings_show_list(name) \
static inline ssize_t show_##name##_list(struct sys_device *dev, char *buf) \
{ \
unsigned int cpu = dev->id; \
return show_cpumap(1, &(topology_##name(cpu)), buf); \
}
#define define_siblings_show_func(name) \
define_siblings_show_map(name); define_siblings_show_list(name)
#ifdef topology_physical_package_id
define_id_show_func(physical_package_id);
@ -68,7 +91,9 @@ define_one_ro(core_id);
#ifdef topology_thread_siblings
define_siblings_show_func(thread_siblings);
define_one_ro(thread_siblings);
#define ref_thread_siblings_attr &attr_thread_siblings.attr,
define_one_ro(thread_siblings_list);
#define ref_thread_siblings_attr \
&attr_thread_siblings.attr, &attr_thread_siblings_list.attr,
#else
#define ref_thread_siblings_attr
#endif
@ -76,7 +101,9 @@ define_one_ro(thread_siblings);
#ifdef topology_core_siblings
define_siblings_show_func(core_siblings);
define_one_ro(core_siblings);
#define ref_core_siblings_attr &attr_core_siblings.attr,
define_one_ro(core_siblings_list);
#define ref_core_siblings_attr \
&attr_core_siblings.attr, &attr_core_siblings_list.attr,
#else
#define ref_core_siblings_attr
#endif

20
drivers/pci/pci-sysfs.c
View File

@ -73,8 +73,23 @@ static ssize_t local_cpus_show(struct device *dev,
mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
strcat(buf,"\n");
return 1+len;
buf[len++] = '\n';
buf[len] = '\0';
return len;
}
static ssize_t local_cpulist_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
cpumask_t mask;
int len;
mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
len = cpulist_scnprintf(buf, PAGE_SIZE-2, mask);
buf[len++] = '\n';
buf[len] = '\0';
return len;
}
/* show resources */
@ -201,6 +216,7 @@ struct device_attribute pci_dev_attrs[] = {
__ATTR_RO(class),
__ATTR_RO(irq),
__ATTR_RO(local_cpus),
__ATTR_RO(local_cpulist),
__ATTR_RO(modalias),
#ifdef CONFIG_NUMA
__ATTR_RO(numa_node),

25
drivers/pci/probe.c
View File

@ -82,6 +82,7 @@ void pci_remove_legacy_files(struct pci_bus *bus) { return; }
* PCI Bus Class Devices
*/
static ssize_t pci_bus_show_cpuaffinity(struct device *dev,
int type,
struct device_attribute *attr,
char *buf)
{
@ -89,12 +90,30 @@ static ssize_t pci_bus_show_cpuaffinity(struct device *dev,
cpumask_t cpumask;
cpumask = pcibus_to_cpumask(to_pci_bus(dev));
ret = cpumask_scnprintf(buf, PAGE_SIZE, cpumask);
if (ret < PAGE_SIZE)
ret = type?
cpulist_scnprintf(buf, PAGE_SIZE-2, cpumask):
cpumask_scnprintf(buf, PAGE_SIZE-2, cpumask);
buf[ret++] = '\n';
buf[ret] = '\0';
return ret;
}
DEVICE_ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpuaffinity, NULL);
static ssize_t inline pci_bus_show_cpumaskaffinity(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return pci_bus_show_cpuaffinity(dev, 0, attr, buf);
}
static ssize_t inline pci_bus_show_cpulistaffinity(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return pci_bus_show_cpuaffinity(dev, 1, attr, buf);
}
DEVICE_ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpumaskaffinity, NULL);
DEVICE_ATTR(cpulistaffinity, S_IRUGO, pci_bus_show_cpulistaffinity, NULL);
/*
* PCI Bus Class

8
kernel/cpuset.c
View File

@ -2254,8 +2254,16 @@ void cpuset_task_status_allowed(struct seq_file *m, struct task_struct *task)
m->count += cpumask_scnprintf(m->buf + m->count, m->size - m->count,
task->cpus_allowed);
seq_printf(m, "\n");
seq_printf(m, "Cpus_allowed_list:\t");
m->count += cpulist_scnprintf(m->buf + m->count, m->size - m->count,
task->cpus_allowed);
seq_printf(m, "\n");
seq_printf(m, "Mems_allowed:\t");
m->count += nodemask_scnprintf(m->buf + m->count, m->size - m->count,
task->mems_allowed);
seq_printf(m, "\n");
seq_printf(m, "Mems_allowed_list:\t");
m->count += nodelist_scnprintf(m->buf + m->count, m->size - m->count,
task->mems_allowed);
seq_printf(m, "\n");
}

8
kernel/sched_stats.h
View File

@ -9,6 +9,11 @@
static int show_schedstat(struct seq_file *seq, void *v)
{
int cpu;
int mask_len = NR_CPUS/32 * 9;
char *mask_str = kmalloc(mask_len, GFP_KERNEL);
if (mask_str == NULL)
return -ENOMEM;
seq_printf(seq, "version %d\n", SCHEDSTAT_VERSION);
seq_printf(seq, "timestamp %lu\n", jiffies);
@ -36,9 +41,8 @@ static int show_schedstat(struct seq_file *seq, void *v)
preempt_disable();
for_each_domain(cpu, sd) {
enum cpu_idle_type itype;
char mask_str[NR_CPUS];
cpumask_scnprintf(mask_str, NR_CPUS, sd->span);
cpumask_scnprintf(mask_str, mask_len, sd->span);
seq_printf(seq, "domain%d %s", dcount++, mask_str);
for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
itype++) {