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Commit 3eda2011 authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Linus Torvalds
Browse files

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: default avatarLai 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 85dd030e

fs/seq_file.c

+16 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/seq_file.h

+13 −0
Original line number Diff line number Diff line
@@ -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);