* @remark Read the file COPYING
*
* @author John Levon <levon@movementarian.org>
- *
- * Modified by Aravind Menon for Xen
- * These modifications are:
- * Copyright (C) 2005 Hewlett-Packard Co.
*/
#include <linux/fs.h>
#include <linux/oprofile.h>
-#include <asm/uaccess.h>
-#include <linux/ctype.h>
#include "event_buffer.h"
#include "oprofile_stats.h"
#include "oprof.h"
-
+
unsigned long fs_buffer_size = 131072;
unsigned long fs_cpu_buffer_size = 8192;
unsigned long fs_buffer_watershed = 32768; /* FIXME: tune */
static struct file_operations dump_fops = {
.write = dump_write,
};
-
-#ifdef CONFIG_XEN
-
-#define TMPBUFSIZE 512
-
-static unsigned int adomains = 0;
-static int active_domains[MAX_OPROF_DOMAINS + 1];
-static DEFINE_MUTEX(adom_mutex);
-
-static ssize_t adomain_write(struct file * file, char const __user * buf,
- size_t count, loff_t * offset)
-{
- char *tmpbuf;
- char *startp, *endp;
- int i;
- unsigned long val;
- ssize_t retval = count;
-
- if (*offset)
- return -EINVAL;
- if (count > TMPBUFSIZE - 1)
- return -EINVAL;
-
- if (!(tmpbuf = kmalloc(TMPBUFSIZE, GFP_KERNEL)))
- return -ENOMEM;
-
- if (copy_from_user(tmpbuf, buf, count)) {
- kfree(tmpbuf);
- return -EFAULT;
- }
- tmpbuf[count] = 0;
-
- mutex_lock(&adom_mutex);
-
- startp = tmpbuf;
- /* Parse one more than MAX_OPROF_DOMAINS, for easy error checking */
- for (i = 0; i <= MAX_OPROF_DOMAINS; i++) {
- val = simple_strtoul(startp, &endp, 0);
- if (endp == startp)
- break;
- while (ispunct(*endp) || isspace(*endp))
- endp++;
- active_domains[i] = val;
- if (active_domains[i] != val)
- /* Overflow, force error below */
- i = MAX_OPROF_DOMAINS + 1;
- startp = endp;
- }
- /* Force error on trailing junk */
- adomains = *startp ? MAX_OPROF_DOMAINS + 1 : i;
-
- kfree(tmpbuf);
-
- if (adomains > MAX_OPROF_DOMAINS
- || oprofile_set_active(active_domains, adomains)) {
- adomains = 0;
- retval = -EINVAL;
- }
-
- mutex_unlock(&adom_mutex);
- return retval;
-}
-
-static ssize_t adomain_read(struct file * file, char __user * buf,
- size_t count, loff_t * offset)
-{
- char * tmpbuf;
- size_t len;
- int i;
- ssize_t retval;
-
- if (!(tmpbuf = kmalloc(TMPBUFSIZE, GFP_KERNEL)))
- return -ENOMEM;
-
- mutex_lock(&adom_mutex);
-
- len = 0;
- for (i = 0; i < adomains; i++)
- len += snprintf(tmpbuf + len,
- len < TMPBUFSIZE ? TMPBUFSIZE - len : 0,
- "%u ", active_domains[i]);
- WARN_ON(len > TMPBUFSIZE);
- if (len != 0 && len <= TMPBUFSIZE)
- tmpbuf[len-1] = '\n';
-
- mutex_unlock(&adom_mutex);
-
- retval = simple_read_from_buffer(buf, count, offset, tmpbuf, len);
-
- kfree(tmpbuf);
- return retval;
-}
-
-
-static struct file_operations active_domain_ops = {
- .read = adomain_read,
- .write = adomain_write,
-};
-
-static unsigned int pdomains = 0;
-static int passive_domains[MAX_OPROF_DOMAINS];
-static DEFINE_MUTEX(pdom_mutex);
-
-static ssize_t pdomain_write(struct file * file, char const __user * buf,
- size_t count, loff_t * offset)
-{
- char *tmpbuf;
- char *startp, *endp;
- int i;
- unsigned long val;
- ssize_t retval = count;
-
- if (*offset)
- return -EINVAL;
- if (count > TMPBUFSIZE - 1)
- return -EINVAL;
-
- if (!(tmpbuf = kmalloc(TMPBUFSIZE, GFP_KERNEL)))
- return -ENOMEM;
-
- if (copy_from_user(tmpbuf, buf, count)) {
- kfree(tmpbuf);
- return -EFAULT;
- }
- tmpbuf[count] = 0;
-
- mutex_lock(&pdom_mutex);
-
- startp = tmpbuf;
- /* Parse one more than MAX_OPROF_DOMAINS, for easy error checking */
- for (i = 0; i <= MAX_OPROF_DOMAINS; i++) {
- val = simple_strtoul(startp, &endp, 0);
- if (endp == startp)
- break;
- while (ispunct(*endp) || isspace(*endp))
- endp++;
- passive_domains[i] = val;
- if (passive_domains[i] != val)
- /* Overflow, force error below */
- i = MAX_OPROF_DOMAINS + 1;
- startp = endp;
- }
- /* Force error on trailing junk */
- pdomains = *startp ? MAX_OPROF_DOMAINS + 1 : i;
-
- kfree(tmpbuf);
-
- if (pdomains > MAX_OPROF_DOMAINS
- || oprofile_set_passive(passive_domains, pdomains)) {
- pdomains = 0;
- retval = -EINVAL;
- }
-
- mutex_unlock(&pdom_mutex);
- return retval;
-}
-
-static ssize_t pdomain_read(struct file * file, char __user * buf,
- size_t count, loff_t * offset)
-{
- char * tmpbuf;
- size_t len;
- int i;
- ssize_t retval;
-
- if (!(tmpbuf = kmalloc(TMPBUFSIZE, GFP_KERNEL)))
- return -ENOMEM;
-
- mutex_lock(&pdom_mutex);
-
- len = 0;
- for (i = 0; i < pdomains; i++)
- len += snprintf(tmpbuf + len,
- len < TMPBUFSIZE ? TMPBUFSIZE - len : 0,
- "%u ", passive_domains[i]);
- WARN_ON(len > TMPBUFSIZE);
- if (len != 0 && len <= TMPBUFSIZE)
- tmpbuf[len-1] = '\n';
-
- mutex_unlock(&pdom_mutex);
-
- retval = simple_read_from_buffer(buf, count, offset, tmpbuf, len);
-
- kfree(tmpbuf);
- return retval;
-}
-
-static struct file_operations passive_domain_ops = {
- .read = pdomain_read,
- .write = pdomain_write,
-};
-
-#endif /* CONFIG_XEN */
-
+
void oprofile_create_files(struct super_block * sb, struct dentry * root)
{
oprofilefs_create_file(sb, root, "enable", &enable_fops);
oprofilefs_create_file_perm(sb, root, "dump", &dump_fops, 0666);
-#ifdef CONFIG_XEN
- oprofilefs_create_file(sb, root, "active_domains", &active_domain_ops);
- oprofilefs_create_file(sb, root, "passive_domains", &passive_domain_ops);
-#endif
oprofilefs_create_file(sb, root, "buffer", &event_buffer_fops);
oprofilefs_create_ulong(sb, root, "buffer_size", &fs_buffer_size);
oprofilefs_create_ulong(sb, root, "buffer_watershed", &fs_buffer_watershed);
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