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author | Masami Hiramatsu <mhiramat@redhat.com> | 2009-04-06 19:01:01 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-07 08:31:08 -0700 |
commit | e579abeb58eb4b8d7321c6eb44dd9e2d0cbaebaa (patch) | |
tree | 56ebd4b392408ddba88a5da54004fd0a1bfbccf9 /kernel | |
parent | cc00e9cfe0e5c4c31057c722e49fdf2c76dd5953 (diff) | |
download | linux-e579abeb58eb4b8d7321c6eb44dd9e2d0cbaebaa.tar.gz linux-e579abeb58eb4b8d7321c6eb44dd9e2d0cbaebaa.tar.bz2 linux-e579abeb58eb4b8d7321c6eb44dd9e2d0cbaebaa.zip |
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>
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/kprobes.c | 34 |
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; } |