kprobes: rename kprobe_enabled to kprobes_all_disarmed

Rename kprobe_enabled to kprobes_all_disarmed and invert logic due to
avoiding naming confusion from per-probe disabling.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 17 insertions, 17 deletions

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index ca4c22d78cfd..dae198b68e97 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -68,7 +68,7 @@ static struct hlist_head kprobe_table[KPROBE_TABLE_SIZE];
 static struct hlist_head kretprobe_inst_table[KPROBE_TABLE_SIZE];
 
 /* NOTE: change this value only with kprobe_mutex held */
-static bool kprobe_enabled;
+static bool kprobes_all_disarmed;
 
 static DEFINE_MUTEX(kprobe_mutex);      /* Protects kprobe_table */
 static DEFINE_PER_CPU(struct kprobe *, kprobe_instance) = NULL;
@@ -598,7 +598,7 @@ static int __kprobes register_aggr_kprobe(struct kprobe *old_p,
                  * If the old_p has gone, its breakpoint has been disarmed.
                  * We have to arm it again after preparing real kprobes.
                  */
-                if (kprobe_enabled)
+                if (!kprobes_all_disarmed)
                         arch_arm_kprobe(ap);
         }
 
@@ -709,7 +709,7 @@ int __kprobes register_kprobe(struct kprobe *p)
         hlist_add_head_rcu(&p->hlist,
                        &kprobe_table[hash_ptr(p->addr, KPROBE_HASH_BITS)]);
 
-        if (kprobe_enabled)
+        if (!kprobes_all_disarmed)
                 arch_arm_kprobe(p);
 
 out_unlock_text:
@@ -751,7 +751,7 @@ valid_p:
                  * enabled and not gone - otherwise, the breakpoint would
                  * already have been removed. We save on flushing icache.
                  */
-                if (kprobe_enabled && !kprobe_gone(old_p)) {
+                if (!kprobes_all_disarmed && !kprobe_gone(old_p)) {
                         mutex_lock(&text_mutex);
                         arch_disarm_kprobe(p);
                         mutex_unlock(&text_mutex);
@@ -1190,8 +1190,8 @@ static int __init init_kprobes(void)
                 }
         }
 
-        /* By default, kprobes are enabled */
-        kprobe_enabled = true;
+        /* By default, kprobes are armed */
+        kprobes_all_disarmed = false;
 
         err = arch_init_kprobes();
         if (!err)
@@ -1289,7 +1289,7 @@ static struct file_operations debugfs_kprobes_operations = {
         .release        = seq_release,
 };
 
-static void __kprobes enable_all_kprobes(void)
+static void __kprobes arm_all_kprobes(void)
 {
         struct hlist_head *head;
         struct hlist_node *node;
@@ -1298,8 +1298,8 @@ static void __kprobes enable_all_kprobes(void)
 
         mutex_lock(&kprobe_mutex);
 
-        /* If kprobes are already enabled, just return */
-        if (kprobe_enabled)
+        /* If kprobes are armed, just return */
+        if (!kprobes_all_disarmed)
                 goto already_enabled;
 
         mutex_lock(&text_mutex);
@@ -1311,7 +1311,7 @@ static void __kprobes enable_all_kprobes(void)
         }
         mutex_unlock(&text_mutex);
 
-        kprobe_enabled = true;
+        kprobes_all_disarmed = false;
         printk(KERN_INFO "Kprobes globally enabled\n");
 
 already_enabled:
@@ -1319,7 +1319,7 @@ already_enabled:
         return;
 }
 
-static void __kprobes disable_all_kprobes(void)
+static void __kprobes disarm_all_kprobes(void)
 {
         struct hlist_head *head;
         struct hlist_node *node;
@@ -1328,11 +1328,11 @@ static void __kprobes disable_all_kprobes(void)
 
         mutex_lock(&kprobe_mutex);
 
-        /* If kprobes are already disabled, just return */
-        if (!kprobe_enabled)
+        /* If kprobes are already disarmed, just return */
+        if (kprobes_all_disarmed)
                 goto already_disabled;
 
-        kprobe_enabled = false;
+        kprobes_all_disarmed = true;
         printk(KERN_INFO "Kprobes globally disabled\n");
         mutex_lock(&text_mutex);
         for (i = 0; i < KPROBE_TABLE_SIZE; i++) {
@@ -1364,7 +1364,7 @@ static ssize_t read_enabled_file_bool(struct file *file,
 {
         char buf[3];
 
-        if (kprobe_enabled)
+        if (!kprobes_all_disarmed)
                 buf[0] = '1';
         else
                 buf[0] = '0';
@@ -1387,12 +1387,12 @@ static ssize_t write_enabled_file_bool(struct file *file,
         case 'y':
         case 'Y':
         case '1':
-                enable_all_kprobes();
+                arm_all_kprobes();
                 break;
         case 'n':
         case 'N':
         case '0':
-                disable_all_kprobes();
+                disarm_all_kprobes();
                 break;
         }