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authorAl Viro <viro@zeniv.linux.org.uk>2006-03-25 03:06:39 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:22:49 -0800
commit871751e25d956ad24f129ca972b7851feaa61d53 (patch)
treec3213a17481f601339ce0c81a22eebca0946c2c7 /fs/proc/proc_misc.c
parentf52ac8fec8a13e207f675b0c16e0d5f800c1c204 (diff)
[PATCH] slab: implement /proc/slab_allocators
Implement /proc/slab_allocators. It produces output like: idr_layer_cache: 80 idr_pre_get+0x33/0x4e buffer_head: 2555 alloc_buffer_head+0x20/0x75 mm_struct: 9 mm_alloc+0x1e/0x42 mm_struct: 20 dup_mm+0x36/0x370 vm_area_struct: 384 dup_mm+0x18f/0x370 vm_area_struct: 151 do_mmap_pgoff+0x2e0/0x7c3 vm_area_struct: 1 split_vma+0x5a/0x10e vm_area_struct: 11 do_brk+0x206/0x2e2 vm_area_struct: 2 copy_vma+0xda/0x142 vm_area_struct: 9 setup_arg_pages+0x99/0x214 fs_cache: 8 copy_fs_struct+0x21/0x133 fs_cache: 29 copy_process+0xf38/0x10e3 files_cache: 30 alloc_files+0x1b/0xcf signal_cache: 81 copy_process+0xbaa/0x10e3 sighand_cache: 77 copy_process+0xe65/0x10e3 sighand_cache: 1 de_thread+0x4d/0x5f8 anon_vma: 241 anon_vma_prepare+0xd9/0xf3 size-2048: 1 add_sect_attrs+0x5f/0x145 size-2048: 2 journal_init_revoke+0x99/0x302 size-2048: 2 journal_init_revoke+0x137/0x302 size-2048: 2 journal_init_inode+0xf9/0x1c4 Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Alexander Nyberg <alexn@telia.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <clameter@engr.sgi.com> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> DESC slab-leaks3-locking-fix EDESC From: Andrew Morton <akpm@osdl.org> Update for slab-remove-cachep-spinlock.patch Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Alexander Nyberg <alexn@telia.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <clameter@engr.sgi.com> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/proc/proc_misc.c')
-rw-r--r--fs/proc/proc_misc.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 826c131994c..1e9ea37d457 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -485,6 +485,40 @@ static struct file_operations proc_slabinfo_operations = {
.llseek = seq_lseek,
.release = seq_release,
};
+
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+extern struct seq_operations slabstats_op;
+static int slabstats_open(struct inode *inode, struct file *file)
+{
+ unsigned long *n = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ int ret = -ENOMEM;
+ if (n) {
+ ret = seq_open(file, &slabstats_op);
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ *n = PAGE_SIZE / (2 * sizeof(unsigned long));
+ m->private = n;
+ n = NULL;
+ }
+ kfree(n);
+ }
+ return ret;
+}
+
+static int slabstats_release(struct inode *inode, struct file *file)
+{
+ struct seq_file *m = file->private_data;
+ kfree(m->private);
+ return seq_release(inode, file);
+}
+
+static struct file_operations proc_slabstats_operations = {
+ .open = slabstats_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = slabstats_release,
+};
+#endif
#endif
static int show_stat(struct seq_file *p, void *v)
@@ -744,6 +778,9 @@ void __init proc_misc_init(void)
create_seq_entry("interrupts", 0, &proc_interrupts_operations);
#ifdef CONFIG_SLAB
create_seq_entry("slabinfo",S_IWUSR|S_IRUGO,&proc_slabinfo_operations);
+#ifdef CONFIG_DEBUG_SLAB_LEAK
+ create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
+#endif
#endif
create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);