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Merge branch 'slab/procfs' into slab/next
This commit is contained in:
Pekka Enberg
commit
b4f591c45f
118
mm/slab.c
118
mm/slab.c
@ -4276,54 +4276,8 @@ out:
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}
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#ifdef CONFIG_SLABINFO
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static void print_slabinfo_header(struct seq_file *m)
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void get_slabinfo(struct kmem_cache *cachep, struct slabinfo *sinfo)
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{
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/*
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* Output format version, so at least we can change it
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* without _too_ many complaints.
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*/
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#if STATS
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seq_puts(m, "slabinfo - version: 2.1 (statistics)\n");
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#else
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seq_puts(m, "slabinfo - version: 2.1\n");
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#endif
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seq_puts(m, "# name <active_objs> <num_objs> <objsize> "
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"<objperslab> <pagesperslab>");
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seq_puts(m, " : tunables <limit> <batchcount> <sharedfactor>");
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seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail>");
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#if STATS
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seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> "
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"<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>");
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seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>");
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#endif
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seq_putc(m, '\n');
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}
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static void *s_start(struct seq_file *m, loff_t *pos)
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{
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loff_t n = *pos;
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mutex_lock(&slab_mutex);
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if (!n)
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print_slabinfo_header(m);
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return seq_list_start(&slab_caches, *pos);
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}
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static void *s_next(struct seq_file *m, void *p, loff_t *pos)
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{
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return seq_list_next(p, &slab_caches, pos);
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}
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static void s_stop(struct seq_file *m, void *p)
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{
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mutex_unlock(&slab_mutex);
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}
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static int s_show(struct seq_file *m, void *p)
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{
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struct kmem_cache *cachep = list_entry(p, struct kmem_cache, list);
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struct slab *slabp;
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unsigned long active_objs;
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unsigned long num_objs;
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@ -4378,13 +4332,20 @@ static int s_show(struct seq_file *m, void *p)
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if (error)
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printk(KERN_ERR "slab: cache %s error: %s\n", name, error);
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seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d",
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name, active_objs, num_objs, cachep->size,
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cachep->num, (1 << cachep->gfporder));
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seq_printf(m, " : tunables %4u %4u %4u",
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cachep->limit, cachep->batchcount, cachep->shared);
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seq_printf(m, " : slabdata %6lu %6lu %6lu",
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active_slabs, num_slabs, shared_avail);
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sinfo->active_objs = active_objs;
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sinfo->num_objs = num_objs;
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sinfo->active_slabs = active_slabs;
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sinfo->num_slabs = num_slabs;
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sinfo->shared_avail = shared_avail;
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sinfo->limit = cachep->limit;
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sinfo->batchcount = cachep->batchcount;
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sinfo->shared = cachep->shared;
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sinfo->objects_per_slab = cachep->num;
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sinfo->cache_order = cachep->gfporder;
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}
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void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep)
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{
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#if STATS
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{ /* list3 stats */
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unsigned long high = cachep->high_mark;
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@ -4414,31 +4375,8 @@ static int s_show(struct seq_file *m, void *p)
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allochit, allocmiss, freehit, freemiss);
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}
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#endif
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seq_putc(m, '\n');
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return 0;
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}
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/*
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* slabinfo_op - iterator that generates /proc/slabinfo
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*
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* Output layout:
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* cache-name
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* num-active-objs
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* total-objs
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* object size
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* num-active-slabs
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* total-slabs
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* num-pages-per-slab
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* + further values on SMP and with statistics enabled
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*/
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static const struct seq_operations slabinfo_op = {
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.start = s_start,
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.next = s_next,
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.stop = s_stop,
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.show = s_show,
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};
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#define MAX_SLABINFO_WRITE 128
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/**
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* slabinfo_write - Tuning for the slab allocator
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@ -4447,7 +4385,7 @@ static const struct seq_operations slabinfo_op = {
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* @count: data length
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* @ppos: unused
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*/
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static ssize_t slabinfo_write(struct file *file, const char __user *buffer,
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ssize_t slabinfo_write(struct file *file, const char __user *buffer,
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size_t count, loff_t *ppos)
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{
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char kbuf[MAX_SLABINFO_WRITE + 1], *tmp;
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@ -4490,19 +4428,6 @@ static ssize_t slabinfo_write(struct file *file, const char __user *buffer,
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return res;
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}
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static int slabinfo_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &slabinfo_op);
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}
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static const struct file_operations proc_slabinfo_operations = {
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.open = slabinfo_open,
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.read = seq_read,
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.write = slabinfo_write,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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#ifdef CONFIG_DEBUG_SLAB_LEAK
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static void *leaks_start(struct seq_file *m, loff_t *pos)
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@ -4631,6 +4556,16 @@ static int leaks_show(struct seq_file *m, void *p)
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return 0;
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}
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static void *s_next(struct seq_file *m, void *p, loff_t *pos)
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{
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return seq_list_next(p, &slab_caches, pos);
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}
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static void s_stop(struct seq_file *m, void *p)
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{
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mutex_unlock(&slab_mutex);
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}
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static const struct seq_operations slabstats_op = {
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.start = leaks_start,
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.next = s_next,
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@ -4665,7 +4600,6 @@ static const struct file_operations proc_slabstats_operations = {
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static int __init slab_proc_init(void)
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{
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proc_create("slabinfo",S_IWUSR|S_IRUSR,NULL,&proc_slabinfo_operations);
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#ifdef CONFIG_DEBUG_SLAB_LEAK
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proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations);
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#endif
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20
mm/slab.h
20
mm/slab.h
@ -47,4 +47,24 @@ static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t siz
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int __kmem_cache_shutdown(struct kmem_cache *);
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struct seq_file;
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struct file;
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struct slabinfo {
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unsigned long active_objs;
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unsigned long num_objs;
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unsigned long active_slabs;
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unsigned long num_slabs;
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unsigned long shared_avail;
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unsigned int limit;
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unsigned int batchcount;
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unsigned int shared;
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unsigned int objects_per_slab;
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unsigned int cache_order;
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};
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void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo);
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void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s);
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ssize_t slabinfo_write(struct file *file, const char __user *buffer,
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size_t count, loff_t *ppos);
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#endif
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109
mm/slab_common.c
109
mm/slab_common.c
@ -13,6 +13,8 @@
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#include <linux/module.h>
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#include <linux/cpu.h>
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#include <linux/uaccess.h>
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#include <linux/seq_file.h>
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#include <linux/proc_fs.h>
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#include <asm/cacheflush.h>
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#include <asm/tlbflush.h>
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#include <asm/page.h>
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@ -192,3 +194,110 @@ int slab_is_available(void)
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{
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return slab_state >= UP;
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}
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#ifdef CONFIG_SLABINFO
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static void print_slabinfo_header(struct seq_file *m)
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{
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/*
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* Output format version, so at least we can change it
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* without _too_ many complaints.
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*/
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#ifdef CONFIG_DEBUG_SLAB
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seq_puts(m, "slabinfo - version: 2.1 (statistics)\n");
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#else
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seq_puts(m, "slabinfo - version: 2.1\n");
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#endif
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seq_puts(m, "# name <active_objs> <num_objs> <objsize> "
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"<objperslab> <pagesperslab>");
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seq_puts(m, " : tunables <limit> <batchcount> <sharedfactor>");
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seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail>");
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#ifdef CONFIG_DEBUG_SLAB
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seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> "
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"<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>");
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seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>");
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#endif
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seq_putc(m, '\n');
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}
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static void *s_start(struct seq_file *m, loff_t *pos)
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{
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loff_t n = *pos;
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mutex_lock(&slab_mutex);
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if (!n)
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print_slabinfo_header(m);
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return seq_list_start(&slab_caches, *pos);
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}
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static void *s_next(struct seq_file *m, void *p, loff_t *pos)
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{
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return seq_list_next(p, &slab_caches, pos);
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}
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static void s_stop(struct seq_file *m, void *p)
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{
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mutex_unlock(&slab_mutex);
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}
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static int s_show(struct seq_file *m, void *p)
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{
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struct kmem_cache *s = list_entry(p, struct kmem_cache, list);
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struct slabinfo sinfo;
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memset(&sinfo, 0, sizeof(sinfo));
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get_slabinfo(s, &sinfo);
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seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d",
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s->name, sinfo.active_objs, sinfo.num_objs, s->size,
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sinfo.objects_per_slab, (1 << sinfo.cache_order));
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seq_printf(m, " : tunables %4u %4u %4u",
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sinfo.limit, sinfo.batchcount, sinfo.shared);
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seq_printf(m, " : slabdata %6lu %6lu %6lu",
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sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail);
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slabinfo_show_stats(m, s);
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seq_putc(m, '\n');
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return 0;
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}
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/*
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* slabinfo_op - iterator that generates /proc/slabinfo
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*
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* Output layout:
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* cache-name
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* num-active-objs
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* total-objs
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* object size
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* num-active-slabs
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* total-slabs
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* num-pages-per-slab
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* + further values on SMP and with statistics enabled
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*/
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static const struct seq_operations slabinfo_op = {
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.start = s_start,
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.next = s_next,
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.stop = s_stop,
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.show = s_show,
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};
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static int slabinfo_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &slabinfo_op);
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}
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static const struct file_operations proc_slabinfo_operations = {
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.open = slabinfo_open,
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.read = seq_read,
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.write = slabinfo_write,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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static int __init slab_proc_init(void)
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{
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proc_create("slabinfo", S_IRUSR, NULL, &proc_slabinfo_operations);
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return 0;
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}
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module_init(slab_proc_init);
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#endif /* CONFIG_SLABINFO */
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77
mm/slub.c
77
mm/slub.c
@ -5399,49 +5399,14 @@ __initcall(slab_sysfs_init);
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* The /proc/slabinfo ABI
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*/
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#ifdef CONFIG_SLABINFO
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static void print_slabinfo_header(struct seq_file *m)
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{
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seq_puts(m, "slabinfo - version: 2.1\n");
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seq_puts(m, "# name <active_objs> <num_objs> <object_size> "
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"<objperslab> <pagesperslab>");
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seq_puts(m, " : tunables <limit> <batchcount> <sharedfactor>");
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seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail>");
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seq_putc(m, '\n');
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}
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static void *s_start(struct seq_file *m, loff_t *pos)
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{
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loff_t n = *pos;
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mutex_lock(&slab_mutex);
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if (!n)
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print_slabinfo_header(m);
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return seq_list_start(&slab_caches, *pos);
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}
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static void *s_next(struct seq_file *m, void *p, loff_t *pos)
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{
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return seq_list_next(p, &slab_caches, pos);
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}
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static void s_stop(struct seq_file *m, void *p)
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{
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mutex_unlock(&slab_mutex);
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}
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static int s_show(struct seq_file *m, void *p)
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void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo)
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{
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unsigned long nr_partials = 0;
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unsigned long nr_slabs = 0;
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unsigned long nr_inuse = 0;
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unsigned long nr_objs = 0;
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unsigned long nr_free = 0;
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struct kmem_cache *s;
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int node;
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s = list_entry(p, struct kmem_cache, list);
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for_each_online_node(node) {
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struct kmem_cache_node *n = get_node(s, node);
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@ -5454,41 +5419,21 @@ static int s_show(struct seq_file *m, void *p)
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nr_free += count_partial(n, count_free);
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}
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nr_inuse = nr_objs - nr_free;
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seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d", s->name, nr_inuse,
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nr_objs, s->size, oo_objects(s->oo),
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(1 << oo_order(s->oo)));
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seq_printf(m, " : tunables %4u %4u %4u", 0, 0, 0);
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seq_printf(m, " : slabdata %6lu %6lu %6lu", nr_slabs, nr_slabs,
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0UL);
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seq_putc(m, '\n');
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return 0;
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sinfo->active_objs = nr_objs - nr_free;
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sinfo->num_objs = nr_objs;
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sinfo->active_slabs = nr_slabs;
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sinfo->num_slabs = nr_slabs;
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sinfo->objects_per_slab = oo_objects(s->oo);
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sinfo->cache_order = oo_order(s->oo);
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}
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static const struct seq_operations slabinfo_op = {
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.start = s_start,
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.next = s_next,
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.stop = s_stop,
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.show = s_show,
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};
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|
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static int slabinfo_open(struct inode *inode, struct file *file)
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void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s)
|
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{
|
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return seq_open(file, &slabinfo_op);
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}
|
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|
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static const struct file_operations proc_slabinfo_operations = {
|
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.open = slabinfo_open,
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.read = seq_read,
|
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.llseek = seq_lseek,
|
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.release = seq_release,
|
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};
|
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|
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static int __init slab_proc_init(void)
|
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ssize_t slabinfo_write(struct file *file, const char __user *buffer,
|
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size_t count, loff_t *ppos)
|
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{
|
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proc_create("slabinfo", S_IRUSR, NULL, &proc_slabinfo_operations);
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return 0;
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return -EIO;
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}
|
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module_init(slab_proc_init);
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#endif /* CONFIG_SLABINFO */
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|
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