804 lines
22 KiB
C
804 lines
22 KiB
C
#include <linux/proc_fs.h>
|
|
#include <linux/kmod.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/sysctl.h>
|
|
#include <linux/seq_file.h>
|
|
#include <sys/sysmacros.h>
|
|
#include <sys/kmem.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/debug.h>
|
|
#include "config.h"
|
|
|
|
#ifdef DEBUG_SUBSYSTEM
|
|
#undef DEBUG_SUBSYSTEM
|
|
#endif
|
|
|
|
#define DEBUG_SUBSYSTEM S_PROC
|
|
|
|
#ifdef DEBUG_KMEM
|
|
static unsigned long table_min = 0;
|
|
static unsigned long table_max = ~0;
|
|
#endif
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
static struct ctl_table_header *spl_header = NULL;
|
|
static struct proc_dir_entry *proc_sys = NULL;
|
|
static struct proc_dir_entry *proc_sys_spl = NULL;
|
|
#ifdef DEBUG_MUTEX
|
|
static struct proc_dir_entry *proc_sys_spl_mutex = NULL;
|
|
static struct proc_dir_entry *proc_sys_spl_mutex_stats = NULL;
|
|
#endif
|
|
#endif
|
|
|
|
#define CTL_SPL 0x87
|
|
#define CTL_SPL_DEBUG 0x88
|
|
#define CTL_SPL_MUTEX 0x89
|
|
#define CTL_SPL_KMEM 0x90
|
|
|
|
enum {
|
|
CTL_VERSION = 1, /* Version */
|
|
CTL_HOSTID, /* Host id reported by /usr/bin/hostid */
|
|
CTL_HW_SERIAL, /* Hardware serial number from hostid */
|
|
|
|
CTL_DEBUG_SUBSYS, /* Debug subsystem */
|
|
CTL_DEBUG_MASK, /* Debug mask */
|
|
CTL_DEBUG_PRINTK, /* Force all messages to console */
|
|
CTL_DEBUG_MB, /* Debug buffer size */
|
|
CTL_DEBUG_BINARY, /* Include binary data in buffer */
|
|
CTL_DEBUG_CATASTROPHE, /* Set if we have BUG'd or panic'd */
|
|
CTL_DEBUG_PANIC_ON_BUG, /* Set if we should panic on BUG */
|
|
CTL_DEBUG_PATH, /* Dump log location */
|
|
CTL_DEBUG_DUMP, /* Dump debug buffer to file */
|
|
CTL_DEBUG_FORCE_BUG, /* Hook to force a BUG */
|
|
CTL_DEBUG_STACK_SIZE, /* Max observed stack size */
|
|
|
|
CTL_CONSOLE_RATELIMIT, /* Ratelimit console messages */
|
|
CTL_CONSOLE_MAX_DELAY_CS, /* Max delay at which we skip messages */
|
|
CTL_CONSOLE_MIN_DELAY_CS, /* Init delay at which we skip messages */
|
|
CTL_CONSOLE_BACKOFF, /* Delay increase factor */
|
|
|
|
#ifdef DEBUG_KMEM
|
|
CTL_KMEM_KMEMUSED, /* Crrently alloc'd kmem bytes */
|
|
CTL_KMEM_KMEMMAX, /* Max alloc'd by kmem bytes */
|
|
CTL_KMEM_VMEMUSED, /* Currently alloc'd vmem bytes */
|
|
CTL_KMEM_VMEMMAX, /* Max alloc'd by vmem bytes */
|
|
#endif
|
|
|
|
CTL_MUTEX_STATS, /* Global mutex statistics */
|
|
CTL_MUTEX_STATS_PER, /* Per mutex statistics */
|
|
CTL_MUTEX_SPIN_MAX, /* Maximum mutex spin iterations */
|
|
};
|
|
|
|
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;
|
|
}
|
|
|
|
static int
|
|
proc_dobitmasks(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
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;
|
|
ENTRY;
|
|
|
|
str = kmem_alloc(size, KM_SLEEP);
|
|
if (str == NULL)
|
|
RETURN(-ENOMEM);
|
|
|
|
if (write) {
|
|
rc = proc_copyin_string(str, size, buffer, *lenp);
|
|
if (rc < 0)
|
|
RETURN(rc);
|
|
|
|
rc = spl_debug_str2mask(mask, str, is_subsys);
|
|
/* Always print BUG/ASSERT to console, so keep this mask */
|
|
if (is_printk)
|
|
*mask |= D_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);
|
|
RETURN(rc);
|
|
}
|
|
|
|
static int
|
|
proc_debug_mb(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
char str[32];
|
|
int rc, len;
|
|
ENTRY;
|
|
|
|
if (write) {
|
|
rc = proc_copyin_string(str, sizeof(str), buffer, *lenp);
|
|
if (rc < 0)
|
|
RETURN(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;
|
|
}
|
|
}
|
|
|
|
RETURN(rc);
|
|
}
|
|
|
|
static int
|
|
proc_dump_kernel(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
ENTRY;
|
|
|
|
if (write) {
|
|
spl_debug_dumplog(0);
|
|
*ppos += *lenp;
|
|
} else {
|
|
*lenp = 0;
|
|
}
|
|
|
|
RETURN(0);
|
|
}
|
|
|
|
static int
|
|
proc_force_bug(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
ENTRY;
|
|
|
|
if (write) {
|
|
CERROR("Crashing due to forced SBUG\n");
|
|
SBUG();
|
|
/* Unreachable */
|
|
} else {
|
|
*lenp = 0;
|
|
}
|
|
|
|
RETURN(0);
|
|
}
|
|
|
|
static int
|
|
proc_console_max_delay_cs(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int rc, max_delay_cs;
|
|
struct ctl_table dummy = *table;
|
|
long d;
|
|
ENTRY;
|
|
|
|
dummy.data = &max_delay_cs;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
|
|
if (write) {
|
|
max_delay_cs = 0;
|
|
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
|
|
if (rc < 0)
|
|
RETURN(rc);
|
|
|
|
if (max_delay_cs <= 0)
|
|
RETURN(-EINVAL);
|
|
|
|
d = (max_delay_cs * HZ) / 100;
|
|
if (d == 0 || d < spl_console_min_delay)
|
|
RETURN(-EINVAL);
|
|
|
|
spl_console_max_delay = d;
|
|
} else {
|
|
max_delay_cs = (spl_console_max_delay * 100) / HZ;
|
|
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
|
|
}
|
|
|
|
RETURN(rc);
|
|
}
|
|
|
|
static int
|
|
proc_console_min_delay_cs(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int rc, min_delay_cs;
|
|
struct ctl_table dummy = *table;
|
|
long d;
|
|
ENTRY;
|
|
|
|
dummy.data = &min_delay_cs;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
|
|
if (write) {
|
|
min_delay_cs = 0;
|
|
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
|
|
if (rc < 0)
|
|
RETURN(rc);
|
|
|
|
if (min_delay_cs <= 0)
|
|
RETURN(-EINVAL);
|
|
|
|
d = (min_delay_cs * HZ) / 100;
|
|
if (d == 0 || d > spl_console_max_delay)
|
|
RETURN(-EINVAL);
|
|
|
|
spl_console_min_delay = d;
|
|
} else {
|
|
min_delay_cs = (spl_console_min_delay * 100) / HZ;
|
|
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
|
|
}
|
|
|
|
RETURN(rc);
|
|
}
|
|
|
|
static int
|
|
proc_console_backoff(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int rc, backoff;
|
|
struct ctl_table dummy = *table;
|
|
ENTRY;
|
|
|
|
dummy.data = &backoff;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
|
|
if (write) {
|
|
backoff = 0;
|
|
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
|
|
if (rc < 0)
|
|
RETURN(rc);
|
|
|
|
if (backoff <= 0)
|
|
RETURN(-EINVAL);
|
|
|
|
spl_console_backoff = backoff;
|
|
} else {
|
|
backoff = spl_console_backoff;
|
|
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
|
|
}
|
|
|
|
RETURN(rc);
|
|
}
|
|
|
|
static int
|
|
proc_doatomic64(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int rc = 0;
|
|
unsigned long min = 0, max = ~0, val;
|
|
struct ctl_table dummy = *table;
|
|
ENTRY;
|
|
|
|
dummy.data = &val;
|
|
dummy.proc_handler = &proc_dointvec;
|
|
dummy.extra1 = &min;
|
|
dummy.extra2 = &max;
|
|
|
|
if (write) {
|
|
*ppos += *lenp;
|
|
} else {
|
|
val = atomic_read((atomic64_t *)table->data);
|
|
rc = proc_doulongvec_minmax(&dummy, write, filp,
|
|
buffer, lenp, ppos);
|
|
}
|
|
|
|
RETURN(rc);
|
|
}
|
|
|
|
static int
|
|
proc_dohostid(struct ctl_table *table, int write, struct file *filp,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
int len, rc = 0;
|
|
int32_t val;
|
|
char *end, str[32];
|
|
ENTRY;
|
|
|
|
if (write) {
|
|
/* We can't use proc_doulongvec_minmax() in the write
|
|
* case hear 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)
|
|
RETURN(rc);
|
|
|
|
val = simple_strtol(str, &end, 16);
|
|
if (str == end)
|
|
RETURN(-EINVAL);
|
|
|
|
spl_hostid = (long)val;
|
|
sprintf(hw_serial, "%u", (val >= 0) ? val : -val);
|
|
*ppos += *lenp;
|
|
} 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;
|
|
}
|
|
}
|
|
|
|
RETURN(rc);
|
|
}
|
|
|
|
#ifdef DEBUG_MUTEX
|
|
static void
|
|
mutex_seq_show_headers(struct seq_file *f)
|
|
{
|
|
seq_printf(f, "%-36s %-4s %-16s\t"
|
|
"e_tot\te_nh\te_sp\te_sl\tte_tot\tte_nh\n",
|
|
"name", "type", "owner");
|
|
}
|
|
|
|
static int
|
|
mutex_seq_show(struct seq_file *f, void *p)
|
|
{
|
|
kmutex_t *mp = p;
|
|
char t = 'X';
|
|
int i;
|
|
|
|
ASSERT(mp->km_magic == KM_MAGIC);
|
|
|
|
switch (mp->km_type) {
|
|
case MUTEX_DEFAULT: t = 'D'; break;
|
|
case MUTEX_SPIN: t = 'S'; break;
|
|
case MUTEX_ADAPTIVE: t = 'A'; break;
|
|
default:
|
|
SBUG();
|
|
}
|
|
seq_printf(f, "%-36s %c ", mp->km_name, t);
|
|
if (mp->km_owner)
|
|
seq_printf(f, "%p\t", mp->km_owner);
|
|
else
|
|
seq_printf(f, "%-16s\t", "<not held>");
|
|
|
|
for (i = 0; i < MUTEX_STATS_SIZE; i++)
|
|
seq_printf(f, "%d%c", mp->km_stats[i],
|
|
(i + 1 == MUTEX_STATS_SIZE) ? '\n' : '\t');
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *
|
|
mutex_seq_start(struct seq_file *f, loff_t *pos)
|
|
{
|
|
struct list_head *p;
|
|
loff_t n = *pos;
|
|
ENTRY;
|
|
|
|
spin_lock(&mutex_stats_lock);
|
|
if (!n)
|
|
mutex_seq_show_headers(f);
|
|
|
|
p = mutex_stats_list.next;
|
|
while (n--) {
|
|
p = p->next;
|
|
if (p == &mutex_stats_list)
|
|
RETURN(NULL);
|
|
}
|
|
|
|
RETURN(list_entry(p, kmutex_t, km_list));
|
|
}
|
|
|
|
static void *
|
|
mutex_seq_next(struct seq_file *f, void *p, loff_t *pos)
|
|
{
|
|
kmutex_t *mp = p;
|
|
ENTRY;
|
|
|
|
++*pos;
|
|
RETURN((mp->km_list.next == &mutex_stats_list) ?
|
|
NULL : list_entry(mp->km_list.next, kmutex_t, km_list));
|
|
}
|
|
|
|
static void
|
|
mutex_seq_stop(struct seq_file *f, void *v)
|
|
{
|
|
spin_unlock(&mutex_stats_lock);
|
|
}
|
|
|
|
static struct seq_operations mutex_seq_ops = {
|
|
.show = mutex_seq_show,
|
|
.start = mutex_seq_start,
|
|
.next = mutex_seq_next,
|
|
.stop = mutex_seq_stop,
|
|
};
|
|
|
|
static int
|
|
proc_mutex_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return seq_open(filp, &mutex_seq_ops);
|
|
}
|
|
|
|
static struct file_operations proc_mutex_operations = {
|
|
.open = proc_mutex_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
#endif /* DEBUG_MUTEX */
|
|
|
|
static struct ctl_table spl_debug_table[] = {
|
|
{
|
|
.ctl_name = CTL_DEBUG_SUBSYS,
|
|
.procname = "subsystem",
|
|
.data = &spl_debug_subsys,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dobitmasks
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_MASK,
|
|
.procname = "mask",
|
|
.data = &spl_debug_mask,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dobitmasks
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_PRINTK,
|
|
.procname = "printk",
|
|
.data = &spl_debug_printk,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dobitmasks
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_MB,
|
|
.procname = "mb",
|
|
.mode = 0644,
|
|
.proc_handler = &proc_debug_mb,
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_BINARY,
|
|
.procname = "binary",
|
|
.data = &spl_debug_binary,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_CATASTROPHE,
|
|
.procname = "catastrophe",
|
|
.data = &spl_debug_catastrophe,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_PANIC_ON_BUG,
|
|
.procname = "panic_on_bug",
|
|
.data = &spl_debug_panic_on_bug,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_PATH,
|
|
.procname = "path",
|
|
.data = spl_debug_file_path,
|
|
.maxlen = sizeof(spl_debug_file_path),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dostring,
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_DUMP,
|
|
.procname = "dump",
|
|
.mode = 0200,
|
|
.proc_handler = &proc_dump_kernel,
|
|
},
|
|
{ .ctl_name = CTL_DEBUG_FORCE_BUG,
|
|
.procname = "force_bug",
|
|
.mode = 0200,
|
|
.proc_handler = &proc_force_bug,
|
|
},
|
|
{
|
|
.ctl_name = CTL_CONSOLE_RATELIMIT,
|
|
.procname = "console_ratelimit",
|
|
.data = &spl_console_ratelimit,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.ctl_name = CTL_CONSOLE_MAX_DELAY_CS,
|
|
.procname = "console_max_delay_centisecs",
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_console_max_delay_cs,
|
|
},
|
|
{
|
|
.ctl_name = CTL_CONSOLE_MIN_DELAY_CS,
|
|
.procname = "console_min_delay_centisecs",
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_console_min_delay_cs,
|
|
},
|
|
{
|
|
.ctl_name = CTL_CONSOLE_BACKOFF,
|
|
.procname = "console_backoff",
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_console_backoff,
|
|
},
|
|
{
|
|
.ctl_name = CTL_DEBUG_STACK_SIZE,
|
|
.procname = "stack_max",
|
|
.data = &spl_debug_stack,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{0},
|
|
};
|
|
|
|
#ifdef DEBUG_MUTEX
|
|
static struct ctl_table spl_mutex_table[] = {
|
|
{
|
|
.ctl_name = CTL_MUTEX_STATS,
|
|
.procname = "stats",
|
|
.data = &mutex_stats,
|
|
.maxlen = sizeof(int) * MUTEX_STATS_SIZE,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{
|
|
.ctl_name = CTL_MUTEX_SPIN_MAX,
|
|
.procname = "spin_max",
|
|
.data = &mutex_spin_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dointvec,
|
|
},
|
|
{0},
|
|
};
|
|
#endif /* DEBUG_MUTEX */
|
|
|
|
#ifdef DEBUG_KMEM
|
|
static struct ctl_table spl_kmem_table[] = {
|
|
{
|
|
.ctl_name = CTL_KMEM_KMEMUSED,
|
|
.procname = "kmem_used",
|
|
.data = &kmem_alloc_used,
|
|
.maxlen = sizeof(atomic64_t),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doatomic64,
|
|
},
|
|
{
|
|
.ctl_name = CTL_KMEM_KMEMMAX,
|
|
.procname = "kmem_max",
|
|
.data = &kmem_alloc_max,
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doulongvec_minmax,
|
|
},
|
|
{
|
|
.ctl_name = CTL_KMEM_VMEMUSED,
|
|
.procname = "vmem_used",
|
|
.data = &vmem_alloc_used,
|
|
.maxlen = sizeof(atomic64_t),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doatomic64,
|
|
},
|
|
{
|
|
.ctl_name = CTL_KMEM_VMEMMAX,
|
|
.procname = "vmem_max",
|
|
.data = &vmem_alloc_max,
|
|
.maxlen = sizeof(unsigned long),
|
|
.extra1 = &table_min,
|
|
.extra2 = &table_max,
|
|
.mode = 0444,
|
|
.proc_handler = &proc_doulongvec_minmax,
|
|
},
|
|
{0},
|
|
};
|
|
#endif /* DEBUG_MUTEX */
|
|
|
|
static struct ctl_table spl_table[] = {
|
|
/* NB No .strategy entries have been provided since
|
|
* sysctl(8) prefers to go via /proc for portability.
|
|
*/
|
|
{
|
|
.ctl_name = CTL_VERSION,
|
|
.procname = "version",
|
|
.data = spl_version,
|
|
.maxlen = sizeof(spl_version),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dostring,
|
|
},
|
|
{
|
|
.ctl_name = CTL_HOSTID,
|
|
.procname = "hostid",
|
|
.data = &spl_hostid,
|
|
.maxlen = sizeof(unsigned long),
|
|
.mode = 0644,
|
|
.proc_handler = &proc_dohostid,
|
|
},
|
|
{
|
|
.ctl_name = CTL_HW_SERIAL,
|
|
.procname = "hw_serial",
|
|
.data = hw_serial,
|
|
.maxlen = sizeof(hw_serial),
|
|
.mode = 0444,
|
|
.proc_handler = &proc_dostring,
|
|
},
|
|
{
|
|
.ctl_name = CTL_SPL_DEBUG,
|
|
.procname = "debug",
|
|
.mode = 0555,
|
|
.child = spl_debug_table,
|
|
},
|
|
#ifdef DEBUG_MUTEX
|
|
{
|
|
.ctl_name = CTL_SPL_MUTEX,
|
|
.procname = "mutex",
|
|
.mode = 0555,
|
|
.child = spl_mutex_table,
|
|
},
|
|
#endif
|
|
#ifdef DEBUG_KMEM
|
|
{
|
|
.ctl_name = CTL_SPL_KMEM,
|
|
.procname = "kmem",
|
|
.mode = 0555,
|
|
.child = spl_kmem_table,
|
|
},
|
|
#endif
|
|
{ 0 },
|
|
};
|
|
|
|
static struct ctl_table spl_dir[] = {
|
|
{
|
|
.ctl_name = CTL_SPL,
|
|
.procname = "spl",
|
|
.mode = 0555,
|
|
.child = spl_table,
|
|
},
|
|
{0}
|
|
};
|
|
|
|
static int
|
|
proc_dir_entry_match(int len, const char *name, struct proc_dir_entry *de)
|
|
{
|
|
if (de->namelen != len)
|
|
return 0;
|
|
|
|
return !memcmp(name, de->name, len);
|
|
}
|
|
|
|
static struct proc_dir_entry *
|
|
proc_dir_entry_find(struct proc_dir_entry *root, const char *str)
|
|
{
|
|
struct proc_dir_entry *de;
|
|
|
|
for (de = root->subdir; de; de = de->next)
|
|
if (proc_dir_entry_match(strlen(str), str, de))
|
|
return de;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
proc_init(void)
|
|
{
|
|
int rc = 0;
|
|
ENTRY;
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
spl_header = register_sysctl_table(spl_dir, 0);
|
|
if (spl_header == NULL)
|
|
RETURN(-EUNATCH);
|
|
|
|
proc_sys = proc_dir_entry_find(&proc_root, "sys");
|
|
if (proc_sys == NULL)
|
|
GOTO(out, rc = -EUNATCH);
|
|
|
|
proc_sys_spl = proc_dir_entry_find(proc_sys, "spl");
|
|
if (proc_sys_spl == NULL)
|
|
GOTO(out, rc = -EUNATCH);
|
|
|
|
#ifdef DEBUG_MUTEX
|
|
proc_sys_spl_mutex = proc_dir_entry_find(proc_sys_spl, "mutex");
|
|
if (proc_sys_spl_mutex == NULL)
|
|
GOTO(out, rc = -EUNATCH);
|
|
|
|
proc_sys_spl_mutex_stats = create_proc_entry("stats_per", 0444,
|
|
proc_sys_spl_mutex);
|
|
if (proc_sys_spl_mutex_stats == NULL)
|
|
GOTO(out, rc = -EUNATCH);
|
|
|
|
proc_sys_spl_mutex_stats->proc_fops = &proc_mutex_operations;
|
|
#endif /* DEBUG_MUTEX */
|
|
RETURN(rc);
|
|
out:
|
|
unregister_sysctl_table(spl_header);
|
|
#endif /* CONFIG_SYSCTL */
|
|
RETURN(rc);
|
|
}
|
|
|
|
void
|
|
proc_fini(void)
|
|
{
|
|
ENTRY;
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
ASSERT(spl_header != NULL);
|
|
remove_proc_entry("stats_per", proc_sys_spl_mutex);
|
|
unregister_sysctl_table(spl_header);
|
|
#endif
|
|
EXIT;
|
|
}
|