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authorLai Jiangshan <laijs@cn.fujitsu.com>2008-10-18 20:28:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:39 -0700
commit3eda20118000941e7e8994fc5fac8706d8c10f00 (patch)
tree7873d4760af7801f8e5b95cc7d6b719894aad6f5
parent85dd030edb174376ef43bc95e5fae4755af1ec98 (diff)
seq_file: add seq_cpumask_list(), seq_nodemask_list()
seq_cpumask_list(), seq_nodemask_list() are very like seq_cpumask(), seq_nodemask(), but they print human readable string. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Paul Menage <menage@google.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/seq_file.c16
-rw-r--r--include/linux/seq_file.h13
2 files changed, 29 insertions, 0 deletions
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 11c85fec6b4..eba2eabcd2b 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -465,6 +465,22 @@ int seq_bitmap(struct seq_file *m, unsigned long *bits, unsigned int nr_bits)
}
EXPORT_SYMBOL(seq_bitmap);
+int seq_bitmap_list(struct seq_file *m, unsigned long *bits,
+ unsigned int nr_bits)
+{
+ if (m->count < m->size) {
+ int len = bitmap_scnlistprintf(m->buf + m->count,
+ m->size - m->count, bits, nr_bits);
+ if (m->count + len < m->size) {
+ m->count += len;
+ return 0;
+ }
+ }
+ m->count = m->size;
+ return -1;
+}
+EXPORT_SYMBOL(seq_bitmap_list);
+
static void *single_start(struct seq_file *p, loff_t *pos)
{
return NULL + (*pos == 0);
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index a1783b229ef..dc50bcc282a 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -60,6 +60,19 @@ static inline int seq_nodemask(struct seq_file *m, nodemask_t *mask)
return seq_bitmap(m, mask->bits, MAX_NUMNODES);
}
+int seq_bitmap_list(struct seq_file *m, unsigned long *bits,
+ unsigned int nr_bits);
+
+static inline int seq_cpumask_list(struct seq_file *m, cpumask_t *mask)
+{
+ return seq_bitmap_list(m, mask->bits, NR_CPUS);
+}
+
+static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
+{
+ return seq_bitmap_list(m, mask->bits, MAX_NUMNODES);
+}
+
int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
int single_release(struct inode *, struct file *);
void *__seq_open_private(struct file *, const struct seq_operations *, int);