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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-04-05 16:23:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-05 21:36:25 -0700
commit5ad3509364a86461188184e2ae7ca517dca6f389 (patch)
treeb2c4e1c94eb4d04b2fbc31dd8e13b039ee44e161 /mm
parent7f16f91fdfce694493e539bff17acaedaebc366d (diff)
mm: reuse DEFINE_SHOW_ATTRIBUTE() macro
...instead of open coding file operations followed by custom ->open() callbacks per each attribute. [andriy.shevchenko@linux.intel.com: add tags, fix compilation issue] Link: http://lkml.kernel.org/r/20180217144253.58604-1-andriy.shevchenko@linux.intel.com Link: http://lkml.kernel.org/r/20180214154644.54505-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Tejun Heo <tj@kernel.org> Cc: Dennis Zhou <dennisszhou@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/backing-dev.c13
-rw-r--r--mm/memblock.c13
-rw-r--r--mm/percpu-stats.c13
-rw-r--r--mm/zsmalloc.c15
4 files changed, 5 insertions, 49 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index b5f940ce0143..fac66abd5a68 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -100,18 +100,7 @@ static int bdi_debug_stats_show(struct seq_file *m, void *v)
return 0;
}
-
-static int bdi_debug_stats_open(struct inode *inode, struct file *file)
-{
- return single_open(file, bdi_debug_stats_show, inode->i_private);
-}
-
-static const struct file_operations bdi_debug_stats_fops = {
- .open = bdi_debug_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(bdi_debug_stats);
static int bdi_debug_register(struct backing_dev_info *bdi, const char *name)
{
diff --git a/mm/memblock.c b/mm/memblock.c
index c2fed302c2f8..04406a930bfc 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -1795,18 +1795,7 @@ static int memblock_debug_show(struct seq_file *m, void *private)
}
return 0;
}
-
-static int memblock_debug_open(struct inode *inode, struct file *file)
-{
- return single_open(file, memblock_debug_show, inode->i_private);
-}
-
-static const struct file_operations memblock_debug_fops = {
- .open = memblock_debug_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(memblock_debug);
static int __init memblock_init_debugfs(void)
{
diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index 7a58460bfd27..063ff60ecd90 100644
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -223,18 +223,7 @@ alloc_buffer:
return 0;
}
-
-static int percpu_stats_open(struct inode *inode, struct file *filp)
-{
- return single_open(filp, percpu_stats_show, NULL);
-}
-
-static const struct file_operations percpu_stats_fops = {
- .open = percpu_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(percpu_stats);
static int __init init_percpu_stats_debugfs(void)
{
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index b7f61cd1c709..a583ab111a43 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -642,18 +642,7 @@ static int zs_stats_size_show(struct seq_file *s, void *v)
return 0;
}
-
-static int zs_stats_size_open(struct inode *inode, struct file *file)
-{
- return single_open(file, zs_stats_size_show, inode->i_private);
-}
-
-static const struct file_operations zs_stat_size_ops = {
- .open = zs_stats_size_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(zs_stats_size);
static void zs_pool_stat_create(struct zs_pool *pool, const char *name)
{
@@ -672,7 +661,7 @@ static void zs_pool_stat_create(struct zs_pool *pool, const char *name)
pool->stat_dentry = entry;
entry = debugfs_create_file("classes", S_IFREG | S_IRUGO,
- pool->stat_dentry, pool, &zs_stat_size_ops);
+ pool->stat_dentry, pool, &zs_stats_size_fops);
if (!entry) {
pr_warn("%s: debugfs file entry <%s> creation failed\n",
name, "classes");