summaryrefslogtreecommitdiffstats
path: root/include/linux/cpumask.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/cpumask.h')
-rw-r--r--include/linux/cpumask.h98
1 files changed, 64 insertions, 34 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 21e1dd4..d4bf526 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -339,36 +339,6 @@ extern cpumask_t cpu_mask_all;
#endif
#define CPUMASK_PTR(v, m) cpumask_t *v = &(m->v)
-#define cpumask_scnprintf(buf, len, src) \
- __cpumask_scnprintf((buf), (len), &(src), NR_CPUS)
-static inline int __cpumask_scnprintf(char *buf, int len,
- const cpumask_t *srcp, int nbits)
-{
- return bitmap_scnprintf(buf, len, srcp->bits, nbits);
-}
-
-#define cpumask_parse_user(ubuf, ulen, dst) \
- __cpumask_parse_user((ubuf), (ulen), &(dst), NR_CPUS)
-static inline int __cpumask_parse_user(const char __user *buf, int len,
- cpumask_t *dstp, int nbits)
-{
- return bitmap_parse_user(buf, len, dstp->bits, nbits);
-}
-
-#define cpulist_scnprintf(buf, len, src) \
- __cpulist_scnprintf((buf), (len), &(src), NR_CPUS)
-static inline int __cpulist_scnprintf(char *buf, int len,
- const cpumask_t *srcp, int nbits)
-{
- return bitmap_scnlistprintf(buf, len, srcp->bits, nbits);
-}
-
-#define cpulist_parse(buf, dst) __cpulist_parse((buf), &(dst), NR_CPUS)
-static inline int __cpulist_parse(const char *buf, cpumask_t *dstp, int nbits)
-{
- return bitmap_parselist(buf, dstp->bits, nbits);
-}
-
#define cpu_remap(oldbit, old, new) \
__cpu_remap((oldbit), &(old), &(new), NR_CPUS)
static inline int __cpu_remap(int oldbit,
@@ -540,9 +510,6 @@ extern cpumask_t cpu_active_map;
[BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
}
-/* This produces more efficient code. */
-#define nr_cpumask_bits NR_CPUS
-
#else /* NR_CPUS > BITS_PER_LONG */
#define CPU_BITS_ALL \
@@ -550,9 +517,15 @@ extern cpumask_t cpu_active_map;
[0 ... BITS_TO_LONGS(NR_CPUS)-2] = ~0UL, \
[BITS_TO_LONGS(NR_CPUS)-1] = CPU_MASK_LAST_WORD \
}
+#endif /* NR_CPUS > BITS_PER_LONG */
+#ifdef CONFIG_CPUMASK_OFFSTACK
+/* Assuming NR_CPUS is huge, a runtime limit is more efficient. Also,
+ * not all bits may be allocated. */
#define nr_cpumask_bits nr_cpu_ids
-#endif /* NR_CPUS > BITS_PER_LONG */
+#else
+#define nr_cpumask_bits NR_CPUS
+#endif
/* verify cpu argument to cpumask_* operators */
static inline unsigned int cpumask_check(unsigned int cpu)
@@ -946,6 +919,63 @@ static inline void cpumask_copy(struct cpumask *dstp,
#define cpumask_of(cpu) (get_cpu_mask(cpu))
/**
+ * cpumask_scnprintf - print a cpumask into a string as comma-separated hex
+ * @buf: the buffer to sprintf into
+ * @len: the length of the buffer
+ * @srcp: the cpumask to print
+ *
+ * If len is zero, returns zero. Otherwise returns the length of the
+ * (nul-terminated) @buf string.
+ */
+static inline int cpumask_scnprintf(char *buf, int len,
+ const struct cpumask *srcp)
+{
+ return bitmap_scnprintf(buf, len, srcp->bits, nr_cpumask_bits);
+}
+
+/**
+ * cpumask_parse_user - extract a cpumask from a user string
+ * @buf: the buffer to extract from
+ * @len: the length of the buffer
+ * @dstp: the cpumask to set.
+ *
+ * Returns -errno, or 0 for success.
+ */
+static inline int cpumask_parse_user(const char __user *buf, int len,
+ struct cpumask *dstp)
+{
+ return bitmap_parse_user(buf, len, dstp->bits, nr_cpumask_bits);
+}
+
+/**
+ * cpulist_scnprintf - print a cpumask into a string as comma-separated list
+ * @buf: the buffer to sprintf into
+ * @len: the length of the buffer
+ * @srcp: the cpumask to print
+ *
+ * If len is zero, returns zero. Otherwise returns the length of the
+ * (nul-terminated) @buf string.
+ */
+static inline int cpulist_scnprintf(char *buf, int len,
+ const struct cpumask *srcp)
+{
+ return bitmap_scnlistprintf(buf, len, srcp->bits, nr_cpumask_bits);
+}
+
+/**
+ * cpulist_parse_user - extract a cpumask from a user string of ranges
+ * @buf: the buffer to extract from
+ * @len: the length of the buffer
+ * @dstp: the cpumask to set.
+ *
+ * Returns -errno, or 0 for success.
+ */
+static inline int cpulist_parse(const char *buf, struct cpumask *dstp)
+{
+ return bitmap_parselist(buf, dstp->bits, nr_cpumask_bits);
+}
+
+/**
* to_cpumask - convert an NR_CPUS bitmap to a struct cpumask *
* @bitmap: the bitmap
*
OpenPOWER on IntegriCloud