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Commit 9c0ad59e authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk Committed by Greg Kroah-Hartman
Browse files

zcache/debug: Use an array to initialize/use debugfs attributes. 



It makes it neater and also allows us to piggyback on that
in the zcache_dump function.

Acked-by: default avatarDan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 95bdaee2

drivers/staging/zcache/debug.c

+51 −112
Original line number Diff line number Diff line
@@ -3,130 +3,69 @@ 


#ifdef CONFIG_DEBUG_FS

#include <linux/debugfs.h>

#define	zdfs	debugfs_create_size_t

#define	zdfs64	debugfs_create_u64



#define ATTR(x)  { .name = #x, .val = &zcache_##x, }

static struct debug_entry {

	const char *name;

	ssize_t *val;

} attrs[] = {

	ATTR(obj_count), ATTR(obj_count_max),

	ATTR(objnode_count), ATTR(objnode_count_max),

	ATTR(flush_total), ATTR(flush_found),

	ATTR(flobj_total), ATTR(flobj_found),

	ATTR(failed_eph_puts), ATTR(failed_pers_puts),

	ATTR(failed_getfreepages), ATTR(failed_alloc),

	ATTR(put_to_flush),

	ATTR(compress_poor), ATTR(mean_compress_poor),

	ATTR(eph_ate_tail), ATTR(eph_ate_tail_failed),

	ATTR(pers_ate_eph), ATTR(pers_ate_eph_failed),

	ATTR(evicted_eph_zpages), ATTR(evicted_eph_pageframes),

	ATTR(eph_pageframes), ATTR(eph_pageframes_max),

	ATTR(eph_zpages), ATTR(eph_zpages_max),

	ATTR(pers_zpages), ATTR(pers_zpages_max),

	ATTR(last_active_file_pageframes),

	ATTR(last_inactive_file_pageframes),

	ATTR(last_active_anon_pageframes),

	ATTR(last_inactive_anon_pageframes),

	ATTR(eph_nonactive_puts_ignored),

	ATTR(pers_nonactive_puts_ignored),

#ifdef CONFIG_ZCACHE_WRITEBACK

	ATTR(zcache_outstanding_writeback_pages),

	ATTR(zcache_writtenback_pages),

#endif

};

#undef ATTR

int zcache_debugfs_init(void)

{

	unsigned int i;

	struct dentry *root = debugfs_create_dir("zcache", NULL);

	if (root == NULL)

		return -ENXIO;



	zdfs("obj_count", S_IRUGO, root, &zcache_obj_count);

	zdfs("obj_count_max", S_IRUGO, root, &zcache_obj_count_max);

	zdfs("objnode_count", S_IRUGO, root, &zcache_objnode_count);

	zdfs("objnode_count_max", S_IRUGO, root, &zcache_objnode_count_max);

	zdfs("flush_total", S_IRUGO, root, &zcache_flush_total);

	zdfs("flush_found", S_IRUGO, root, &zcache_flush_found);

	zdfs("flobj_total", S_IRUGO, root, &zcache_flobj_total);

	zdfs("flobj_found", S_IRUGO, root, &zcache_flobj_found);

	zdfs("failed_eph_puts", S_IRUGO, root, &zcache_failed_eph_puts);

	zdfs("failed_pers_puts", S_IRUGO, root, &zcache_failed_pers_puts);

	zdfs("failed_get_free_pages", S_IRUGO, root,

				&zcache_failed_getfreepages);

	zdfs("failed_alloc", S_IRUGO, root, &zcache_failed_alloc);

	zdfs("put_to_flush", S_IRUGO, root, &zcache_put_to_flush);

	zdfs("compress_poor", S_IRUGO, root, &zcache_compress_poor);

	zdfs("mean_compress_poor", S_IRUGO, root, &zcache_mean_compress_poor);

	zdfs("eph_ate_tail", S_IRUGO, root, &zcache_eph_ate_tail);

	zdfs("eph_ate_tail_failed", S_IRUGO, root, &zcache_eph_ate_tail_failed);

	zdfs("pers_ate_eph", S_IRUGO, root, &zcache_pers_ate_eph);

	zdfs("pers_ate_eph_failed", S_IRUGO, root, &zcache_pers_ate_eph_failed);

	zdfs("evicted_eph_zpages", S_IRUGO, root, &zcache_evicted_eph_zpages);

	zdfs("evicted_eph_pageframes", S_IRUGO, root,

				&zcache_evicted_eph_pageframes);

	zdfs("eph_pageframes", S_IRUGO, root, &zcache_eph_pageframes);

	zdfs("eph_pageframes_max", S_IRUGO, root, &zcache_eph_pageframes_max);

	zdfs("pers_pageframes", S_IRUGO, root, &zcache_pers_pageframes);

	zdfs("pers_pageframes_max", S_IRUGO, root, &zcache_pers_pageframes_max);

	zdfs("eph_zpages", S_IRUGO, root, &zcache_eph_zpages);

	zdfs("eph_zpages_max", S_IRUGO, root, &zcache_eph_zpages_max);

	zdfs("pers_zpages", S_IRUGO, root, &zcache_pers_zpages);

	zdfs("pers_zpages_max", S_IRUGO, root, &zcache_pers_zpages_max);

	zdfs("last_active_file_pageframes", S_IRUGO, root,

				&zcache_last_active_file_pageframes);

	zdfs("last_inactive_file_pageframes", S_IRUGO, root,

				&zcache_last_inactive_file_pageframes);

	zdfs("last_active_anon_pageframes", S_IRUGO, root,

				&zcache_last_active_anon_pageframes);

	zdfs("last_inactive_anon_pageframes", S_IRUGO, root,

				&zcache_last_inactive_anon_pageframes);

	zdfs("eph_nonactive_puts_ignored", S_IRUGO, root,

				&zcache_eph_nonactive_puts_ignored);

	zdfs("pers_nonactive_puts_ignored", S_IRUGO, root,

				&zcache_pers_nonactive_puts_ignored);

	zdfs64("eph_zbytes", S_IRUGO, root, &zcache_eph_zbytes);

	zdfs64("eph_zbytes_max", S_IRUGO, root, &zcache_eph_zbytes_max);

	zdfs64("pers_zbytes", S_IRUGO, root, &zcache_pers_zbytes);

	zdfs64("pers_zbytes_max", S_IRUGO, root, &zcache_pers_zbytes_max);

	zdfs("outstanding_writeback_pages", S_IRUGO, root,

				&zcache_outstanding_writeback_pages);

	zdfs("writtenback_pages", S_IRUGO, root, &zcache_writtenback_pages);

	for (i = 0; i < ARRAY_SIZE(attrs); i++)

		if (!debugfs_create_size_t(attrs[i].name, S_IRUGO, root, attrs[i].val))

			goto out;



	debugfs_create_u64("eph_zbytes", S_IRUGO, root, &zcache_eph_zbytes);

	debugfs_create_u64("eph_zbytes_max", S_IRUGO, root, &zcache_eph_zbytes_max);

	debugfs_create_u64("pers_zbytes", S_IRUGO, root, &zcache_pers_zbytes);

	debugfs_create_u64("pers_zbytes_max", S_IRUGO, root, &zcache_pers_zbytes_max);



	return 0;

out:

	return -ENODEV;

}

#undef	zdebugfs

#undef	zdfs64



/* developers can call this in case of ooms, e.g. to find memory leaks */

void zcache_dump(void)

{

	pr_debug("zcache: obj_count=%zd\n", zcache_obj_count);

	pr_debug("zcache: obj_count_max=%zd\n", zcache_obj_count_max);

	pr_debug("zcache: objnode_count=%zd\n", zcache_objnode_count);

	pr_debug("zcache: objnode_count_max=%zd\n", zcache_objnode_count_max);

	pr_debug("zcache: flush_total=%zd\n", zcache_flush_total);

	pr_debug("zcache: flush_found=%zd\n", zcache_flush_found);

	pr_debug("zcache: flobj_total=%zd\n", zcache_flobj_total);

	pr_debug("zcache: flobj_found=%zd\n", zcache_flobj_found);

	pr_debug("zcache: failed_eph_puts=%zd\n", zcache_failed_eph_puts);

	pr_debug("zcache: failed_pers_puts=%zd\n", zcache_failed_pers_puts);

	pr_debug("zcache: failed_get_free_pages=%zd\n",

				zcache_failed_getfreepages);

	pr_debug("zcache: failed_alloc=%zd\n", zcache_failed_alloc);

	pr_debug("zcache: put_to_flush=%zd\n", zcache_put_to_flush);

	pr_debug("zcache: compress_poor=%zd\n", zcache_compress_poor);

	pr_debug("zcache: mean_compress_poor=%zd\n",

				zcache_mean_compress_poor);

	pr_debug("zcache: eph_ate_tail=%zd\n", zcache_eph_ate_tail);

	pr_debug("zcache: eph_ate_tail_failed=%zd\n",

				zcache_eph_ate_tail_failed);

	pr_debug("zcache: pers_ate_eph=%zd\n", zcache_pers_ate_eph);

	pr_debug("zcache: pers_ate_eph_failed=%zd\n",

				zcache_pers_ate_eph_failed);

	pr_debug("zcache: evicted_eph_zpages=%zd\n", zcache_evicted_eph_zpages);

	pr_debug("zcache: evicted_eph_pageframes=%zd\n",

				zcache_evicted_eph_pageframes);

	pr_debug("zcache: eph_pageframes=%zd\n", zcache_eph_pageframes);

	pr_debug("zcache: eph_pageframes_max=%zd\n", zcache_eph_pageframes_max);

	pr_debug("zcache: pers_pageframes=%zd\n", zcache_pers_pageframes);

	pr_debug("zcache: pers_pageframes_max=%zd\n",

				zcache_pers_pageframes_max);

	pr_debug("zcache: eph_zpages=%zd\n", zcache_eph_zpages);

	pr_debug("zcache: eph_zpages_max=%zd\n", zcache_eph_zpages_max);

	pr_debug("zcache: pers_zpages=%zd\n", zcache_pers_zpages);

	pr_debug("zcache: pers_zpages_max=%zd\n", zcache_pers_zpages_max);

	pr_debug("zcache: last_active_file_pageframes=%zd\n",

				zcache_last_active_file_pageframes);

	pr_debug("zcache: last_inactive_file_pageframes=%zd\n",

				zcache_last_inactive_file_pageframes);

	pr_debug("zcache: last_active_anon_pageframes=%zd\n",

				zcache_last_active_anon_pageframes);

	pr_debug("zcache: last_inactive_anon_pageframes=%zd\n",

				zcache_last_inactive_anon_pageframes);

	pr_debug("zcache: eph_nonactive_puts_ignored=%zd\n",

				zcache_eph_nonactive_puts_ignored);

	pr_debug("zcache: pers_nonactive_puts_ignored=%zd\n",

				zcache_pers_nonactive_puts_ignored);

	pr_debug("zcache: eph_zbytes=%llu\n",

				zcache_eph_zbytes);

	pr_debug("zcache: eph_zbytes_max=%llu\n",

				zcache_eph_zbytes_max);

	pr_debug("zcache: pers_zbytes=%llu\n",

				zcache_pers_zbytes);

	pr_debug("zcache: pers_zbytes_max=%llu\n",

				zcache_pers_zbytes_max);

	pr_debug("zcache: outstanding_writeback_pages=%zd\n",

				zcache_outstanding_writeback_pages);

	pr_debug("zcache: writtenback_pages=%zd\n", zcache_writtenback_pages);

	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(attrs); i++)

		pr_debug("zcache: %s=%zu\n", attrs[i].name, *attrs[i].val);



	pr_debug("zcache: eph_zbytes=%llu\n", (unsigned long long)zcache_eph_zbytes);

	pr_debug("zcache: eph_zbytes_max=%llu\n", (unsigned long long)zcache_eph_zbytes_max);

	pr_debug("zcache: pers_zbytes=%llu\n", (unsigned long long)zcache_pers_zbytes);

	pr_debug("zcache: pers_zbytes_max=%llu\n", (unsigned long long)zcache_pers_zbytes_max);

}

#endif