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Diffstat (limited to 'drivers/base/topology.c')
-rw-r--r--drivers/base/topology.c41
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index e1d3ad4db2f0..fdf4044d2e74 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -40,15 +40,38 @@ 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) \
+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) \
{ \
- 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")); \
+ 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);
define_one_ro(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