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-rw-r--r--kernel/trace/trace_events.c24
1 files changed, 8 insertions, 16 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 57c9e709772c..d120cfe3cca7 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -38,21 +38,19 @@ static LIST_HEAD(ftrace_common_fields);
static struct kmem_cache *field_cachep;
static struct kmem_cache *file_cachep;
-#define SYSTEM_FL_FREE_NAME (1 << 31)
-
static inline int system_refcount(struct event_subsystem *system)
{
- return system->ref_count & ~SYSTEM_FL_FREE_NAME;
+ return system->ref_count;
}
static int system_refcount_inc(struct event_subsystem *system)
{
- return (system->ref_count++) & ~SYSTEM_FL_FREE_NAME;
+ return system->ref_count++;
}
static int system_refcount_dec(struct event_subsystem *system)
{
- return (--system->ref_count) & ~SYSTEM_FL_FREE_NAME;
+ return --system->ref_count;
}
/* Double loops, do not use break, only goto's work */
@@ -461,8 +459,7 @@ static void __put_system(struct event_subsystem *system)
kfree(filter->filter_string);
kfree(filter);
}
- if (system->ref_count & SYSTEM_FL_FREE_NAME)
- kfree(system->name);
+ kfree_const(system->name);
kfree(system);
}
@@ -1493,13 +1490,9 @@ create_new_subsystem(const char *name)
system->ref_count = 1;
/* Only allocate if dynamic (kprobes and modules) */
- if (!core_kernel_data((unsigned long)name)) {
- system->ref_count |= SYSTEM_FL_FREE_NAME;
- system->name = kstrdup(name, GFP_KERNEL);
- if (!system->name)
- goto out_free;
- } else
- system->name = name;
+ system->name = kstrdup_const(name, GFP_KERNEL);
+ if (!system->name)
+ goto out_free;
system->filter = NULL;
@@ -1512,8 +1505,7 @@ create_new_subsystem(const char *name)
return system;
out_free:
- if (system->ref_count & SYSTEM_FL_FREE_NAME)
- kfree(system->name);
+ kfree_const(system->name);
kfree(system);
return NULL;
}