853 lines
24 KiB
C
853 lines
24 KiB
C
/*****************************************************************************\
|
|
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
|
|
* Copyright (C) 2007 The Regents of the University of California.
|
|
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
|
|
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
|
|
* UCRL-CODE-235197
|
|
*
|
|
* This file is part of the SPL, Solaris Porting Layer.
|
|
* For details, see <http://zfsonlinux.org/>.
|
|
*
|
|
* The SPL is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* The SPL is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
|
|
*****************************************************************************
|
|
* Solaris Porting Layer (SPL) Proc Implementation.
|
|
\*****************************************************************************/
|
|
|
|
#include <sys/systeminfo.h>
|
|
#include <sys/kstat.h>
|
|
#include <linux/kmod.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/proc_compat.h>
|
|
#include <linux/version.h>
|
|
#include <spl-debug.h>
|
|
|
|
#ifdef SS_DEBUG_SUBSYS
|
|
#undef SS_DEBUG_SUBSYS
|
|
#endif
|
|
|
|
#define SS_DEBUG_SUBSYS SS_PROC
|
|
|
|
#if defined(CONSTIFY_PLUGIN) && LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)
|
|
typedef struct ctl_table __no_const spl_ctl_table;
|
|
#else
|
|
typedef struct ctl_table spl_ctl_table;
|
|
#endif
|
|
|
|
#ifdef DEBUG_KMEM
|
|
static unsigned long table_min = 0;
|
|
static unsigned long table_max = ~0;
|
|
#endif
|
|
|
|
static struct ctl_table_header *spl_header = NULL;
|
|
static struct proc_dir_entry *proc_spl = NULL;
|
|
#ifdef DEBUG_KMEM
|
|
static struct proc_dir_entry *proc_spl_kmem = NULL;
|
|
static struct proc_dir_entry *proc_spl_kmem_slab = NULL;
|
|
#endif /* DEBUG_KMEM */
|
|
struct proc_dir_entry *proc_spl_kstat = NULL;
|
|
|
|
static int
|
|
proc_copyin_string(char *kbuffer, int kbuffer_size,
|
|
const char *ubuffer, int ubuffer_size)
|
|
{
|
|
int size;
|
|
|
|
if (ubuffer_size > kbuffer_size)
|
|
return -EOVERFLOW;
|
|
|
|
if (copy_from_user((void *)kbuffer, (void *)ubuffer, ubuffer_size))
|
|
return -EFAULT;
|
|
|
|
/* strip trailing whitespace */
|
|
size = strnlen(kbuffer, ubuffer_size);
|
|
while (size-- >= 0)
|
|
if (!isspace(kbuffer[size]))
|
|
break;
|
|
|
|
/* empty string */
|
|
if (size < 0)
|
|
return -EINVAL;
|
|
|
|
/* no space to terminate */
|
|
if (size == kbuffer_size)
|
|
return -EOVERFLOW;
|
|
|
|
kbuffer[size + 1] = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
proc_copyout_string(char *ubuffer, int ubuffer_size,
|
|
const char *kbuffer, char *append)
|
|
{
|
|
/* NB if 'append' != NULL, it's a single character to append to the
|
|
* copied out string - usually "\n", for /proc entries and
|
|
* (i.e. a terminating zero byte) for sysctl entries
|
|
*/
|
|
int size = MIN(strlen(kbuffer), ubuffer_size);
|
|
|
|
if (copy_to_user(ubuffer, kbuffer, size))
|
|
return -EFAULT;
|
|
|
|
if (append != NULL && size < ubuffer_size) {
|
|
if (copy_to_user(ubuffer + size, append, 1))
|
|
return -EFAULT;
|
|
|
|
size++;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
#ifdef DEBUG_LOG
|
|
SPL_PROC_HANDLER(proc_dobitmasks)
|
|
{
|
|
unsigned long *mask = table->data;
|
|
int is_subsys = (mask == &spl_debug_subsys) ? 1 : 0;
|
|
int is_printk = (mask == &spl_debug_printk) ? 1 : 0;
|
|
int size = 512, rc;
|
|
char *str;
|
|
SENTRY;
|
|
|
|
str = kmem_alloc(size, KM_SLEEP);
|
|
if (str == NULL)
|
|
SRETURN(-ENOMEM);
|
|
|
|
if (write) {
|
|
rc = proc_copyin_string(str, size, buffer, *lenp);
|
|
if (rc < 0)
|
|
SRETURN(rc);
|
|
|
|
rc = spl_debug_str2mask(mask, str, is_subsys);
|
|
/* Always print BUG/ASSERT to console, so keep this mask */
|
|
if (is_printk)
|
|
*mask |= SD_EMERG;
|
|
|
|
*ppos += *lenp;
|
|
} else {
|
|
rc = spl_debug_mask2str(str, size, *mask, is_subsys);
|
|
if (*ppos >= rc)
|
|
rc = 0;
|
|
else
|
|
rc = proc_copyout_string(buffer, *lenp,
|
|
str + *ppos, "\n");
|
|
if (rc >= 0) {
|
|
*lenp = rc;
|
|
*ppos += rc;
|
|
}
|
|
}
|
|
|
|
kmem_free(str, size);
|
|
SRETURN(rc);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_debug_mb)
|
|
{
|
|
char str[32];
|
|
int rc, len;
|
|
SENTRY;
|
|
|
|
if (write) {
|
|
rc = proc_copyin_string(str, sizeof(str), buffer, *lenp);
|
|
if (rc < 0)
|
|
SRETURN(rc);
|
|
|
|
rc = spl_debug_set_mb(simple_strtoul(str, NULL, 0));
|
|
*ppos += *lenp;
|
|
} else {
|
|
len = snprintf(str, sizeof(str), "%d", spl_debug_get_mb());
|
|
if (*ppos >= len)
|
|
rc = 0;
|
|
else
|
|
rc = proc_copyout_string(buffer,*lenp,str+*ppos,"\n");
|
|
|
|
if (rc >= 0) {
|
|
*lenp = rc;
|
|
*ppos += rc;
|
|
}
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_dump_kernel)
|
|
{
|
|
SENTRY;
|
|
|
|
if (write) {
|
|
spl_debug_dumplog(0);
|
|
*ppos += *lenp;
|
|
} else {
|
|
*lenp = 0;
|
|
}
|
|
|
|
SRETURN(0);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_force_bug)
|
|
{
|
|
SENTRY;
|
|
|
|
if (write)
|
|
PANIC("Crashing due to forced panic\n");
|
|
else
|
|
*lenp = 0;
|
|
|
|
SRETURN(0);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_console_max_delay_cs)
|
|
{
|
|
int rc, max_delay_cs;
|
|
spl_ctl_table dummy = *table;
|
|
long d;
|
|
SENTRY;
|
|
|
|
dummy.data = &max_delay_cs;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
|
|
if (write) {
|
|
max_delay_cs = 0;
|
|
rc = spl_proc_dointvec(&dummy,write,filp,buffer,lenp,ppos);
|
|
if (rc < 0)
|
|
SRETURN(rc);
|
|
|
|
if (max_delay_cs <= 0)
|
|
SRETURN(-EINVAL);
|
|
|
|
d = (max_delay_cs * HZ) / 100;
|
|
if (d == 0 || d < spl_console_min_delay)
|
|
SRETURN(-EINVAL);
|
|
|
|
spl_console_max_delay = d;
|
|
} else {
|
|
max_delay_cs = (spl_console_max_delay * 100) / HZ;
|
|
rc = spl_proc_dointvec(&dummy,write,filp,buffer,lenp,ppos);
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_console_min_delay_cs)
|
|
{
|
|
int rc, min_delay_cs;
|
|
spl_ctl_table dummy = *table;
|
|
long d;
|
|
SENTRY;
|
|
|
|
dummy.data = &min_delay_cs;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
|
|
if (write) {
|
|
min_delay_cs = 0;
|
|
rc = spl_proc_dointvec(&dummy,write,filp,buffer,lenp,ppos);
|
|
if (rc < 0)
|
|
SRETURN(rc);
|
|
|
|
if (min_delay_cs <= 0)
|
|
SRETURN(-EINVAL);
|
|
|
|
d = (min_delay_cs * HZ) / 100;
|
|
if (d == 0 || d > spl_console_max_delay)
|
|
SRETURN(-EINVAL);
|
|
|
|
spl_console_min_delay = d;
|
|
} else {
|
|
min_delay_cs = (spl_console_min_delay * 100) / HZ;
|
|
rc = spl_proc_dointvec(&dummy,write,filp,buffer,lenp,ppos);
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_console_backoff)
|
|
{
|
|
int rc, backoff;
|
|
spl_ctl_table dummy = *table;
|
|
SENTRY;
|
|
|
|
dummy.data = &backoff;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
|
|
if (write) {
|
|
backoff = 0;
|
|
rc = spl_proc_dointvec(&dummy,write,filp,buffer,lenp,ppos);
|
|
if (rc < 0)
|
|
SRETURN(rc);
|
|
|
|
if (backoff <= 0)
|
|
SRETURN(-EINVAL);
|
|
|
|
spl_console_backoff = backoff;
|
|
} else {
|
|
backoff = spl_console_backoff;
|
|
rc = spl_proc_dointvec(&dummy,write,filp,buffer,lenp,ppos);
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
#endif /* DEBUG_LOG */
|
|
|
|
#ifdef DEBUG_KMEM
|
|
SPL_PROC_HANDLER(proc_domemused)
|
|
{
|
|
int rc = 0;
|
|
unsigned long min = 0, max = ~0, val;
|
|
spl_ctl_table dummy = *table;
|
|
SENTRY;
|
|
|
|
dummy.data = &val;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
dummy.extra1 = &min;
|
|
dummy.extra2 = &max;
|
|
|
|
if (write) {
|
|
*ppos += *lenp;
|
|
} else {
|
|
# ifdef HAVE_ATOMIC64_T
|
|
val = atomic64_read((atomic64_t *)table->data);
|
|
# else
|
|
val = atomic_read((atomic_t *)table->data);
|
|
# endif /* HAVE_ATOMIC64_T */
|
|
rc = spl_proc_doulongvec_minmax(&dummy, write, filp,
|
|
buffer, lenp, ppos);
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
|
|
SPL_PROC_HANDLER(proc_doslab)
|
|
{
|
|
int rc = 0;
|
|
unsigned long min = 0, max = ~0, val = 0, mask;
|
|
spl_ctl_table dummy = *table;
|
|
spl_kmem_cache_t *skc;
|
|
SENTRY;
|
|
|
|
dummy.data = &val;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
dummy.extra1 = &min;
|
|
dummy.extra2 = &max;
|
|
|
|
if (write) {
|
|
*ppos += *lenp;
|
|
} else {
|
|
down_read(&spl_kmem_cache_sem);
|
|
mask = (unsigned long)table->data;
|
|
|
|
list_for_each_entry(skc, &spl_kmem_cache_list, skc_list) {
|
|
|
|
/* Only use slabs of the correct kmem/vmem type */
|
|
if (!(skc->skc_flags & mask))
|
|
continue;
|
|
|
|
/* Sum the specified field for selected slabs */
|
|
switch (mask & (KMC_TOTAL | KMC_ALLOC | KMC_MAX)) {
|
|
case KMC_TOTAL:
|
|
val += skc->skc_slab_size * skc->skc_slab_total;
|
|
break;
|
|
case KMC_ALLOC:
|
|
val += skc->skc_obj_size * skc->skc_obj_alloc;
|
|
break;
|
|
case KMC_MAX:
|
|
val += skc->skc_obj_size * skc->skc_obj_max;
|
|
break;
|
|
}
|
|
}
|
|
|
|
up_read(&spl_kmem_cache_sem);
|
|
rc = spl_proc_doulongvec_minmax(&dummy, write, filp,
|
|
buffer, lenp, ppos);
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
#endif /* DEBUG_KMEM */
|
|
|
|
SPL_PROC_HANDLER(proc_dohostid)
|
|
{
|
|
int len, rc = 0;
|
|
char *end, str[32];
|
|
SENTRY;
|
|
|
|
if (write) {
|
|
/* We can't use spl_proc_doulongvec_minmax() in the write
|
|
* case here because hostid while a hex value has no
|
|
* leading 0x which confuses the helper function. */
|
|
rc = proc_copyin_string(str, sizeof(str), buffer, *lenp);
|
|
if (rc < 0)
|
|
SRETURN(rc);
|
|
|
|
spl_hostid = simple_strtoul(str, &end, 16);
|
|
if (str == end)
|
|
SRETURN(-EINVAL);
|
|
|
|
} else {
|
|
len = snprintf(str, sizeof(str), "%lx", spl_hostid);
|
|
if (*ppos >= len)
|
|
rc = 0;
|
|
else
|
|
rc = proc_copyout_string(buffer,*lenp,str+*ppos,"\n");
|
|
|
|
if (rc >= 0) {
|
|
*lenp = rc;
|
|
*ppos += rc;
|
|
}
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
|
|
#ifdef DEBUG_KMEM
|
|
static void
|
|
slab_seq_show_headers(struct seq_file *f)
|
|
{
|
|
seq_printf(f,
|
|
"--------------------- cache ----------"
|
|
"--------------------------------------------- "
|
|
"----- slab ------ "
|
|
"---- object ----- "
|
|
"--- emergency ---\n");
|
|
seq_printf(f,
|
|
"name "
|
|
" flags size alloc slabsize objsize "
|
|
"total alloc max "
|
|
"total alloc max "
|
|
"dlock alloc max\n");
|
|
}
|
|
|
|
static int
|
|
slab_seq_show(struct seq_file *f, void *p)
|
|
{
|
|
spl_kmem_cache_t *skc = p;
|
|
|
|
ASSERT(skc->skc_magic == SKC_MAGIC);
|
|
|
|
/*
|
|
* Backed by Linux slab see /proc/slabinfo.
|
|
*/
|
|
if (skc->skc_flags & KMC_SLAB)
|
|
return (0);
|
|
|
|
spin_lock(&skc->skc_lock);
|
|
seq_printf(f, "%-36s ", skc->skc_name);
|
|
seq_printf(f, "0x%05lx %9lu %9lu %8u %8u "
|
|
"%5lu %5lu %5lu %5lu %5lu %5lu %5lu %5lu %5lu\n",
|
|
(long unsigned)skc->skc_flags,
|
|
(long unsigned)(skc->skc_slab_size * skc->skc_slab_total),
|
|
(long unsigned)(skc->skc_obj_size * skc->skc_obj_alloc),
|
|
(unsigned)skc->skc_slab_size,
|
|
(unsigned)skc->skc_obj_size,
|
|
(long unsigned)skc->skc_slab_total,
|
|
(long unsigned)skc->skc_slab_alloc,
|
|
(long unsigned)skc->skc_slab_max,
|
|
(long unsigned)skc->skc_obj_total,
|
|
(long unsigned)skc->skc_obj_alloc,
|
|
(long unsigned)skc->skc_obj_max,
|
|
(long unsigned)skc->skc_obj_deadlock,
|
|
(long unsigned)skc->skc_obj_emergency,
|
|
(long unsigned)skc->skc_obj_emergency_max);
|
|
|
|
spin_unlock(&skc->skc_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *
|
|
slab_seq_start(struct seq_file *f, loff_t *pos)
|
|
{
|
|
struct list_head *p;
|
|
loff_t n = *pos;
|
|
SENTRY;
|
|
|
|
down_read(&spl_kmem_cache_sem);
|
|
if (!n)
|
|
slab_seq_show_headers(f);
|
|
|
|
p = spl_kmem_cache_list.next;
|
|
while (n--) {
|
|
p = p->next;
|
|
if (p == &spl_kmem_cache_list)
|
|
SRETURN(NULL);
|
|
}
|
|
|
|
SRETURN(list_entry(p, spl_kmem_cache_t, skc_list));
|
|
}
|
|
|
|
static void *
|
|
slab_seq_next(struct seq_file *f, void *p, loff_t *pos)
|
|
{
|
|
spl_kmem_cache_t *skc = p;
|
|
SENTRY;
|
|
|
|
++*pos;
|
|
SRETURN((skc->skc_list.next == &spl_kmem_cache_list) ?
|
|
NULL : list_entry(skc->skc_list.next,spl_kmem_cache_t,skc_list));
|
|
}
|
|
|
|
static void
|
|
slab_seq_stop(struct seq_file *f, void *v)
|
|
{
|
|
up_read(&spl_kmem_cache_sem);
|
|
}
|
|
|
|
static struct seq_operations slab_seq_ops = {
|
|
.show = slab_seq_show,
|
|
.start = slab_seq_start,
|
|
.next = slab_seq_next,
|
|
.stop = slab_seq_stop,
|
|
};
|
|
|
|
static int
|
|
proc_slab_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return seq_open(filp, &slab_seq_ops);
|
|
}
|
|
|
|
static struct file_operations proc_slab_operations = {
|
|
.open = proc_slab_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
#endif /* DEBUG_KMEM */
|
|
|
|
#ifdef DEBUG_LOG
|
|
static struct ctl_table spl_debug_table[] = {
|
|
{
|
|
.procname = "subsystem",
|
|
.data = &spl_debug_subsys,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dobitmasks
|
|
},
|
|
{
|
|
.procname = "mask",
|
|
.data = &spl_debug_mask,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dobitmasks
|
|
},
|
|
{
|
|
.procname = "printk",
|
|
.data = &spl_debug_printk,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dobitmasks
|
|
},
|
|
{
|
|
.procname = "mb",
|
|
.mode = 0644,
|
|
.proc_handler = &proc_debug_mb,
|
|
},
|
|
{
|
|
.procname = "binary",
|
|
.data = &spl_debug_binary,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "catastrophe",
|
|
.data = &spl_debug_catastrophe,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "panic_on_bug",
|
|
.data = &spl_debug_panic_on_bug,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec
|
|
},
|
|
{
|
|
.procname = "path",
|
|
.data = spl_debug_file_path,
|
|
.maxlen = sizeof(spl_debug_file_path),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dostring,
|
|
},
|
|
{
|
|
.procname = "dump",
|
|
.mode = 0200,
|
|
.proc_handler = &proc_dump_kernel,
|
|
},
|
|
{
|
|
.procname = "force_bug",
|
|
.mode = 0200,
|
|
.proc_handler = &proc_force_bug,
|
|
},
|
|
{
|
|
.procname = "console_ratelimit",
|
|
.data = &spl_console_ratelimit,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.procname = "console_max_delay_centisecs",
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_console_max_delay_cs,
|
|
},
|
|
{
|
|
.procname = "console_min_delay_centisecs",
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_console_min_delay_cs,
|
|
},
|
|
{
|
|
.procname = "console_backoff",
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_console_backoff,
|
|
},
|
|
{
|
|
.procname = "stack_max",
|
|
.data = &spl_debug_stack,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{0},
|
|
};
|
|
#endif /* DEBUG_LOG */
|
|
|
|
#ifdef DEBUG_KMEM
|
|
static struct ctl_table spl_kmem_table[] = {
|
|
{
|
|
.procname = "kmem_used",
|
|
.data = &kmem_alloc_used,
|
|
# ifdef HAVE_ATOMIC64_T
|
|
.maxlen = sizeof(atomic64_t),
|
|
# else
|
|
.maxlen = sizeof(atomic_t),
|
|
# endif /* HAVE_ATOMIC64_T */
|
|
.mode = 0444,
|
|
.proc_handler = &proc_domemused,
|
|
},
|
|
{
|
|
.procname = "kmem_max",
|
|
.data = &kmem_alloc_max,
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doulongvec_minmax,
|
|
},
|
|
{
|
|
.procname = "vmem_used",
|
|
.data = &vmem_alloc_used,
|
|
# ifdef HAVE_ATOMIC64_T
|
|
.maxlen = sizeof(atomic64_t),
|
|
# else
|
|
.maxlen = sizeof(atomic_t),
|
|
# endif /* HAVE_ATOMIC64_T */
|
|
.mode = 0444,
|
|
.proc_handler = &proc_domemused,
|
|
},
|
|
{
|
|
.procname = "vmem_max",
|
|
.data = &vmem_alloc_max,
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doulongvec_minmax,
|
|
},
|
|
{
|
|
.procname = "slab_kmem_total",
|
|
.data = (void *)(KMC_KMEM | KMC_TOTAL),
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doslab,
|
|
},
|
|
{
|
|
.procname = "slab_kmem_alloc",
|
|
.data = (void *)(KMC_KMEM | KMC_ALLOC),
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doslab,
|
|
},
|
|
{
|
|
.procname = "slab_kmem_max",
|
|
.data = (void *)(KMC_KMEM | KMC_MAX),
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doslab,
|
|
},
|
|
{
|
|
.procname = "slab_vmem_total",
|
|
.data = (void *)(KMC_VMEM | KMC_TOTAL),
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doslab,
|
|
},
|
|
{
|
|
.procname = "slab_vmem_alloc",
|
|
.data = (void *)(KMC_VMEM | KMC_ALLOC),
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doslab,
|
|
},
|
|
{
|
|
.procname = "slab_vmem_max",
|
|
.data = (void *)(KMC_VMEM | KMC_MAX),
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doslab,
|
|
},
|
|
{0},
|
|
};
|
|
#endif /* DEBUG_KMEM */
|
|
|
|
static struct ctl_table spl_kstat_table[] = {
|
|
{0},
|
|
};
|
|
|
|
static struct ctl_table spl_table[] = {
|
|
/* NB No .strategy entries have been provided since
|
|
* sysctl(8) prefers to go via /proc for portability.
|
|
*/
|
|
{
|
|
.procname = "version",
|
|
.data = spl_version,
|
|
.maxlen = sizeof(spl_version),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dostring,
|
|
},
|
|
{
|
|
.procname = "hostid",
|
|
.data = &spl_hostid,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dohostid,
|
|
},
|
|
#ifdef DEBUG_LOG
|
|
{
|
|
.procname = "debug",
|
|
.mode = 0555,
|
|
.child = spl_debug_table,
|
|
},
|
|
#endif
|
|
#ifdef DEBUG_KMEM
|
|
{
|
|
.procname = "kmem",
|
|
.mode = 0555,
|
|
.child = spl_kmem_table,
|
|
},
|
|
#endif
|
|
{
|
|
.procname = "kstat",
|
|
.mode = 0555,
|
|
.child = spl_kstat_table,
|
|
},
|
|
{ 0 },
|
|
};
|
|
|
|
static struct ctl_table spl_dir[] = {
|
|
{
|
|
.procname = "spl",
|
|
.mode = 0555,
|
|
.child = spl_table,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
static struct ctl_table spl_root[] = {
|
|
{
|
|
#ifdef HAVE_CTL_NAME
|
|
.ctl_name = CTL_KERN,
|
|
#endif
|
|
.procname = "kernel",
|
|
.mode = 0555,
|
|
.child = spl_dir,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
int
|
|
spl_proc_init(void)
|
|
{
|
|
int rc = 0;
|
|
SENTRY;
|
|
|
|
spl_header = register_sysctl_table(spl_root);
|
|
if (spl_header == NULL)
|
|
SRETURN(-EUNATCH);
|
|
|
|
proc_spl = proc_mkdir("spl", NULL);
|
|
if (proc_spl == NULL)
|
|
SGOTO(out, rc = -EUNATCH);
|
|
|
|
#ifdef DEBUG_KMEM
|
|
proc_spl_kmem = proc_mkdir("kmem", proc_spl);
|
|
if (proc_spl_kmem == NULL)
|
|
SGOTO(out, rc = -EUNATCH);
|
|
|
|
proc_spl_kmem_slab = proc_create_data("slab", 0444,
|
|
proc_spl_kmem, &proc_slab_operations, NULL);
|
|
if (proc_spl_kmem_slab == NULL)
|
|
SGOTO(out, rc = -EUNATCH);
|
|
|
|
#endif /* DEBUG_KMEM */
|
|
|
|
proc_spl_kstat = proc_mkdir("kstat", proc_spl);
|
|
if (proc_spl_kstat == NULL)
|
|
SGOTO(out, rc = -EUNATCH);
|
|
out:
|
|
if (rc) {
|
|
remove_proc_entry("kstat", proc_spl);
|
|
#ifdef DEBUG_KMEM
|
|
remove_proc_entry("slab", proc_spl_kmem);
|
|
remove_proc_entry("kmem", proc_spl);
|
|
#endif
|
|
remove_proc_entry("spl", NULL);
|
|
unregister_sysctl_table(spl_header);
|
|
}
|
|
|
|
SRETURN(rc);
|
|
}
|
|
|
|
void
|
|
spl_proc_fini(void)
|
|
{
|
|
SENTRY;
|
|
|
|
remove_proc_entry("kstat", proc_spl);
|
|
#ifdef DEBUG_KMEM
|
|
remove_proc_entry("slab", proc_spl_kmem);
|
|
remove_proc_entry("kmem", proc_spl);
|
|
#endif
|
|
remove_proc_entry("spl", NULL);
|
|
|
|
ASSERT(spl_header != NULL);
|
|
unregister_sysctl_table(spl_header);
|
|
|
|
SEXIT;
|
|
}
|