const: constify remaining file_operations

[safe/jmp/linux-2.6] / kernel / kprobes.c

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 0540948..5240d75 100644 (file)
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -103,7 +103,7 @@ static struct kprobe_blackpoint kprobe_blacklist[] = {
 #define INSNS_PER_PAGE (PAGE_SIZE/(MAX_INSN_SIZE * sizeof(kprobe_opcode_t)))
 
 struct kprobe_insn_page {
-       struct hlist_node hlist;
+       struct list_head list;
        kprobe_opcode_t *insns;         /* Page of instruction slots */
        char slot_used[INSNS_PER_PAGE];
        int nused;
@@ -117,7 +117,7 @@ enum kprobe_slot_state {
 };
 
 static DEFINE_MUTEX(kprobe_insn_mutex);        /* Protects kprobe_insn_pages */
-static struct hlist_head kprobe_insn_pages;
+static LIST_HEAD(kprobe_insn_pages);
 static int kprobe_garbage_slots;
 static int collect_garbage_slots(void);
 
@@ -152,10 +152,9 @@ loop_end:
 static kprobe_opcode_t __kprobes *__get_insn_slot(void)
 {
        struct kprobe_insn_page *kip;
-       struct hlist_node *pos;
 
  retry:
-       hlist_for_each_entry(kip, pos, &kprobe_insn_pages, hlist) {
+       list_for_each_entry(kip, &kprobe_insn_pages, list) {
                if (kip->nused < INSNS_PER_PAGE) {
                        int i;
                        for (i = 0; i < INSNS_PER_PAGE; i++) {
@@ -189,8 +188,8 @@ static kprobe_opcode_t __kprobes *__get_insn_slot(void)
                kfree(kip);
                return NULL;
        }
-       INIT_HLIST_NODE(&kip->hlist);
-       hlist_add_head(&kip->hlist, &kprobe_insn_pages);
+       INIT_LIST_HEAD(&kip->list);
+       list_add(&kip->list, &kprobe_insn_pages);
        memset(kip->slot_used, SLOT_CLEAN, INSNS_PER_PAGE);
        kip->slot_used[0] = SLOT_USED;
        kip->nused = 1;
@@ -219,12 +218,8 @@ static int __kprobes collect_one_slot(struct kprobe_insn_page *kip, int idx)
                 * so as not to have to set it up again the
                 * next time somebody inserts a probe.
                 */
-               hlist_del(&kip->hlist);
-               if (hlist_empty(&kprobe_insn_pages)) {
-                       INIT_HLIST_NODE(&kip->hlist);
-                       hlist_add_head(&kip->hlist,
-                                      &kprobe_insn_pages);
-               } else {
+               if (!list_is_singular(&kprobe_insn_pages)) {
+                       list_del(&kip->list);
                        module_free(NULL, kip->insns);
                        kfree(kip);
                }
@@ -235,14 +230,13 @@ static int __kprobes collect_one_slot(struct kprobe_insn_page *kip, int idx)
 
 static int __kprobes collect_garbage_slots(void)
 {
-       struct kprobe_insn_page *kip;
-       struct hlist_node *pos, *next;
+       struct kprobe_insn_page *kip, *next;
 
        /* Ensure no-one is preepmted on the garbages */
        if (check_safety())
                return -EAGAIN;
 
-       hlist_for_each_entry_safe(kip, pos, next, &kprobe_insn_pages, hlist) {
+       list_for_each_entry_safe(kip, next, &kprobe_insn_pages, list) {
                int i;
                if (kip->ngarbage == 0)
                        continue;
@@ -260,19 +254,17 @@ static int __kprobes collect_garbage_slots(void)
 void __kprobes free_insn_slot(kprobe_opcode_t * slot, int dirty)
 {
        struct kprobe_insn_page *kip;
-       struct hlist_node *pos;
 
        mutex_lock(&kprobe_insn_mutex);
-       hlist_for_each_entry(kip, pos, &kprobe_insn_pages, hlist) {
+       list_for_each_entry(kip, &kprobe_insn_pages, list) {
                if (kip->insns <= slot &&
                    slot < kip->insns + (INSNS_PER_PAGE * MAX_INSN_SIZE)) {
                        int i = (slot - kip->insns) / MAX_INSN_SIZE;
                        if (dirty) {
                                kip->slot_used[i] = SLOT_DIRTY;
                                kip->ngarbage++;
-                       } else {
+                       } else
                                collect_one_slot(kip, i);
-                       }
                        break;
                }
        }
@@ -1329,7 +1321,7 @@ static int __kprobes show_kprobe_addr(struct seq_file *pi, void *v)
        return 0;
 }
 
-static struct seq_operations kprobes_seq_ops = {
+static const struct seq_operations kprobes_seq_ops = {
        .start = kprobe_seq_start,
        .next  = kprobe_seq_next,
        .stop  = kprobe_seq_stop,
@@ -1341,7 +1333,7 @@ static int __kprobes kprobes_open(struct inode *inode, struct file *filp)
        return seq_open(filp, &kprobes_seq_ops);
 }
 
-static struct file_operations debugfs_kprobes_operations = {
+static const struct file_operations debugfs_kprobes_operations = {
        .open           = kprobes_open,
        .read           = seq_read,
        .llseek         = seq_lseek,
@@ -1523,7 +1515,7 @@ static ssize_t write_enabled_file_bool(struct file *file,
        return count;
 }
 
-static struct file_operations fops_kp = {
+static const struct file_operations fops_kp = {
        .read =         read_enabled_file_bool,
        .write =        write_enabled_file_bool,
 };