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Add an almost feature complete implemenation of kstat. I chose

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not to support a few flags (we assert if they are used), and I
did not add the libkstat interface and instead exported everything
to proc for easy access.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@103 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo
2008-05-08 23:21:47 +00:00
parent d4c540de38
commit 04a479f706
6 changed files with 662 additions and 108 deletions
Download Patch File Download Diff File Expand all files Collapse all files
modules/spl/spl-proc.c
+51 -13
View File
@@ -1,14 +1,4 @@
#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"
#include <sys/proc.h>
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
@@ -29,12 +19,19 @@ static struct proc_dir_entry *proc_sys_spl = NULL;
static struct proc_dir_entry *proc_sys_spl_mutex = NULL;
static struct proc_dir_entry *proc_sys_spl_mutex_stats = NULL;
#endif
#ifdef DEBUG_KMEM
static struct proc_dir_entry *proc_sys_spl_kmem = NULL;
#endif
#ifdef DEBUG_KSTAT
struct proc_dir_entry *proc_sys_spl_kstat = NULL;
#endif
#endif
#define CTL_SPL 0x87
#define CTL_SPL_DEBUG 0x88
#define CTL_SPL_MUTEX 0x89
#define CTL_SPL_KMEM 0x90
#define CTL_SPL_KSTAT 0x91
enum {
CTL_VERSION = 1, /* Version */
@@ -665,7 +662,13 @@ static struct ctl_table spl_kmem_table[] = {
},
{0},
};
#endif /* DEBUG_MUTEX */
#endif /* DEBUG_KMEM */
#ifdef DEBUG_KSTAT
static struct ctl_table spl_kstat_table[] = {
{0},
};
#endif /* DEBUG_KSTAT */
static struct ctl_table spl_table[] = {
/* NB No .strategy entries have been provided since
@@ -716,6 +719,14 @@ static struct ctl_table spl_table[] = {
.mode = 0555,
.child = spl_kmem_table,
},
#endif
#ifdef DEBUG_KSTAT
{
.ctl_name = CTL_SPL_KSTAT,
.procname = "kstat",
.mode = 0555,
.child = spl_kstat_table,
},
#endif
{ 0 },
};
@@ -739,7 +750,7 @@ proc_dir_entry_match(int len, const char *name, struct proc_dir_entry *de)
return !memcmp(name, de->name, len);
}
static struct proc_dir_entry *
struct proc_dir_entry *
proc_dir_entry_find(struct proc_dir_entry *root, const char *str)
{
struct proc_dir_entry *de;
@@ -751,6 +762,18 @@ proc_dir_entry_find(struct proc_dir_entry *root, const char *str)
return NULL;
}
int
proc_dir_entries(struct proc_dir_entry *root)
{
struct proc_dir_entry *de;
int i = 0;
for (de = root->subdir; de; de = de->next)
i++;
return i;
}
int
proc_init(void)
{
@@ -782,7 +805,22 @@ proc_init(void)
proc_sys_spl_mutex_stats->proc_fops = &proc_mutex_operations;
#endif /* DEBUG_MUTEX */
#ifdef DEBUG_KMEM
proc_sys_spl_kmem = proc_dir_entry_find(proc_sys_spl, "kmem");
if (proc_sys_spl_kmem == NULL)
GOTO(out2, rc = -EUNATCH);
#endif /* DEBUG_KMEM */
#ifdef DEBUG_KSTAT
proc_sys_spl_kstat = proc_dir_entry_find(proc_sys_spl, "kstat");
if (proc_sys_spl_kstat == NULL)
GOTO(out2, rc = -EUNATCH);
#endif /* DEBUG_KSTAT */
RETURN(rc);
out2:
remove_proc_entry("stats_per", proc_sys_spl_mutex);
out:
unregister_sysctl_table(spl_header);
#endif /* CONFIG_SYSCTL */