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authorCyrill Gorcunov <gorcunov@gmail.com>2008-04-28 21:15:04 +0200
committerIngo Molnar <mingo@elte.hu>2008-05-12 21:27:53 +0200
commit573da4224e8c3800e613d715e909c3179a7e3cb2 (patch)
tree10bfd45af955c2509926c63f2e91ff729bb9c12d
parentx86, ptrace: PEBS support, warning fix (diff)
downloadlinux-573da4224e8c3800e613d715e909c3179a7e3cb2.tar.xz
linux-573da4224e8c3800e613d715e909c3179a7e3cb2.zip
x86: DS cleanup - dont treat 0 as NULL
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/kernel/ds.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 5b32b6d062b4..24a323c95997 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -238,12 +238,12 @@ static inline struct ds_context *ds_alloc_context(struct task_struct *task)
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
- return 0;
+ return NULL;
context->ds = kzalloc(ds_cfg.sizeof_ds, GFP_KERNEL);
if (!context->ds) {
kfree(context);
- return 0;
+ return NULL;
}
*p_context = context;
@@ -279,7 +279,7 @@ static inline void ds_put_context(struct ds_context *context)
if (--context->count)
goto out;
- *(context->this) = 0;
+ *(context->this) = NULL;
if (context->task)
clear_tsk_thread_flag(context->task, TIF_DS_AREA_MSR);
@@ -341,16 +341,16 @@ static inline void *ds_allocate_buffer(size_t size, unsigned int *pages)
rlim = current->signal->rlim[RLIMIT_AS].rlim_cur >> PAGE_SHIFT;
vm = current->mm->total_vm + pgsz;
if (rlim < vm)
- return 0;
+ return NULL;
rlim = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur >> PAGE_SHIFT;
vm = current->mm->locked_vm + pgsz;
if (rlim < vm)
- return 0;
+ return NULL;
buffer = kzalloc(size, GFP_KERNEL);
if (!buffer)
- return 0;
+ return NULL;
current->mm->total_vm += pgsz;
current->mm->locked_vm += pgsz;
@@ -395,7 +395,7 @@ static int ds_request(struct task_struct *task, void *base, size_t size,
if (context->owner[qual] == current)
goto out_unlock;
error = -EPERM;
- if (context->owner[qual] != 0)
+ if (context->owner[qual] != NULL)
goto out_unlock;
context->owner[qual] = current;
@@ -445,7 +445,7 @@ static int ds_request(struct task_struct *task, void *base, size_t size,
return error;
out_release:
- context->owner[qual] = 0;
+ context->owner[qual] = NULL;
ds_put_context(context);
return error;
@@ -825,7 +825,7 @@ void __cpuinit ds_init_intel(struct cpuinfo_x86 *c)
ds_configure(&ds_cfg_var);
break;
case 0xF: /* Core2 */
- case 0x1C: /* Atom */
+ case 0x1C: /* Atom */
ds_configure(&ds_cfg_64);
break;
default: