14 files changed, 60 insertions, 76 deletions

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 27fd775375b0..958bd1540c30 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -131,7 +131,7 @@ static ssize_t show_crash_notes(struct sys_device *dev, struct sysdev_attribute
          * boot up and this data does not change there after. Hence this
          * operation should be safe. No locking required.
          */
-        addr = __pa(per_cpu_ptr(crash_notes, cpunum));
+        addr = per_cpu_ptr_to_phys(per_cpu_ptr(crash_notes, cpunum));
         rc = sprintf(buf, "%Lx\n", addr);
         return rc;
 }
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index f20668c09ce0..67bc2ece7b4b 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -64,14 +64,14 @@ static DEFINE_SPINLOCK(cpufreq_driver_lock);
  * - Lock should not be held across
  *     __cpufreq_governor(data, CPUFREQ_GOV_STOP);
  */
-static DEFINE_PER_CPU(int, policy_cpu);
+static DEFINE_PER_CPU(int, cpufreq_policy_cpu);
 static DEFINE_PER_CPU(struct rw_semaphore, cpu_policy_rwsem);
 
 #define lock_policy_rwsem(mode, cpu)                                    \
 int lock_policy_rwsem_##mode                                            \
 (int cpu)                                                               \
 {                                                                       \
-        int policy_cpu = per_cpu(policy_cpu, cpu);                      \
+        int policy_cpu = per_cpu(cpufreq_policy_cpu, cpu);              \
         BUG_ON(policy_cpu == -1);                                       \
         down_##mode(&per_cpu(cpu_policy_rwsem, policy_cpu));            \
         if (unlikely(!cpu_online(cpu))) {                               \
@@ -90,7 +90,7 @@ EXPORT_SYMBOL_GPL(lock_policy_rwsem_write);
 
 void unlock_policy_rwsem_read(int cpu)
 {
-        int policy_cpu = per_cpu(policy_cpu, cpu);
+        int policy_cpu = per_cpu(cpufreq_policy_cpu, cpu);
         BUG_ON(policy_cpu == -1);
         up_read(&per_cpu(cpu_policy_rwsem, policy_cpu));
 }
@@ -98,7 +98,7 @@ EXPORT_SYMBOL_GPL(unlock_policy_rwsem_read);
 
 void unlock_policy_rwsem_write(int cpu)
 {
-        int policy_cpu = per_cpu(policy_cpu, cpu);
+        int policy_cpu = per_cpu(cpufreq_policy_cpu, cpu);
         BUG_ON(policy_cpu == -1);
         up_write(&per_cpu(cpu_policy_rwsem, policy_cpu));
 }
@@ -818,7 +818,7 @@ static int cpufreq_add_dev_policy(unsigned int cpu,
 
                         /* Set proper policy_cpu */
                         unlock_policy_rwsem_write(cpu);
-                        per_cpu(policy_cpu, cpu) = managed_policy->cpu;
+                        per_cpu(cpufreq_policy_cpu, cpu) = managed_policy->cpu;
 
                         if (lock_policy_rwsem_write(cpu) < 0) {
                                 /* Should not go through policy unlock path */
@@ -932,7 +932,7 @@ static int cpufreq_add_dev_interface(unsigned int cpu,
         if (!cpu_online(j))
                 continue;
                 per_cpu(cpufreq_cpu_data, j) = policy;
-                per_cpu(policy_cpu, j) = policy->cpu;
+                per_cpu(cpufreq_policy_cpu, j) = policy->cpu;
         }
         spin_unlock_irqrestore(&cpufreq_driver_lock, flags);
 
@@ -1020,7 +1020,7 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
         cpumask_copy(policy->cpus, cpumask_of(cpu));
 
         /* Initially set CPU itself as the policy_cpu */
-        per_cpu(policy_cpu, cpu) = cpu;
+        per_cpu(cpufreq_policy_cpu, cpu) = cpu;
         ret = (lock_policy_rwsem_write(cpu) < 0);
         WARN_ON(ret);
 
@@ -2002,7 +2002,7 @@ static int __init cpufreq_core_init(void)
         int cpu;
 
         for_each_possible_cpu(cpu) {
-                per_cpu(policy_cpu, cpu) = -1;
+                per_cpu(cpufreq_policy_cpu, cpu) = -1;
                 init_rwsem(&per_cpu(cpu_policy_rwsem, cpu));
         }
 
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
index a9bd3a05a684..05432216e224 100644
--- a/drivers/cpufreq/freq_table.c
+++ b/drivers/cpufreq/freq_table.c
@@ -174,7 +174,7 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 }
 EXPORT_SYMBOL_GPL(cpufreq_frequency_table_target);
 
-static DEFINE_PER_CPU(struct cpufreq_frequency_table *, show_table);
+static DEFINE_PER_CPU(struct cpufreq_frequency_table *, cpufreq_show_table);
 /**
  * show_available_freqs - show available frequencies for the specified CPU
  */
@@ -185,10 +185,10 @@ static ssize_t show_available_freqs(struct cpufreq_policy *policy, char *buf)
         ssize_t count = 0;
         struct cpufreq_frequency_table *table;
 
-        if (!per_cpu(show_table, cpu))
+        if (!per_cpu(cpufreq_show_table, cpu))
                 return -ENODEV;
 
-        table = per_cpu(show_table, cpu);
+        table = per_cpu(cpufreq_show_table, cpu);
 
         for (i = 0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
                 if (table[i].frequency == CPUFREQ_ENTRY_INVALID)
@@ -217,20 +217,20 @@ void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
                                       unsigned int cpu)
 {
         dprintk("setting show_table for cpu %u to %p\n", cpu, table);
-        per_cpu(show_table, cpu) = table;
+        per_cpu(cpufreq_show_table, cpu) = table;
 }
 EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_attr);
 
 void cpufreq_frequency_table_put_attr(unsigned int cpu)
 {
         dprintk("clearing show_table for cpu %u\n", cpu);
-        per_cpu(show_table, cpu) = NULL;
+        per_cpu(cpufreq_show_table, cpu) = NULL;
 }
 EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr);
 
 struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu)
 {
-        return per_cpu(show_table, cpu);
+        return per_cpu(cpufreq_show_table, cpu);
 }
 EXPORT_SYMBOL_GPL(cpufreq_frequency_get_table);
 
diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 84c51e177269..8c2f3703ec85 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -64,7 +64,7 @@ struct aes_ctx {
         u32 *D;
 };
 
-static DEFINE_PER_CPU(struct cword *, last_cword);
+static DEFINE_PER_CPU(struct cword *, paes_last_cword);
 
 /* Tells whether the ACE is capable to generate
    the extended key for a given key_len. */
@@ -152,9 +152,9 @@ static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
 
 ok:
         for_each_online_cpu(cpu)
-                if (&ctx->cword.encrypt == per_cpu(last_cword, cpu) ||
-                    &ctx->cword.decrypt == per_cpu(last_cword, cpu))
-                        per_cpu(last_cword, cpu) = NULL;
+                if (&ctx->cword.encrypt == per_cpu(paes_last_cword, cpu) ||
+                    &ctx->cword.decrypt == per_cpu(paes_last_cword, cpu))
+                        per_cpu(paes_last_cword, cpu) = NULL;
 
         return 0;
 }
@@ -166,7 +166,7 @@ static inline void padlock_reset_key(struct cword *cword)
 {
         int cpu = raw_smp_processor_id();
 
-        if (cword != per_cpu(last_cword, cpu))
+        if (cword != per_cpu(paes_last_cword, cpu))
 #ifndef CONFIG_X86_64
                 asm volatile ("pushfl; popfl");
 #else
@@ -176,7 +176,7 @@ static inline void padlock_reset_key(struct cword *cword)
 
 static inline void padlock_store_cword(struct cword *cword)
 {
-        per_cpu(last_cword, raw_smp_processor_id()) = cword;
+        per_cpu(paes_last_cword, raw_smp_processor_id()) = cword;
 }
 
 /*
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 8f99354082ce..6f51a0a7a8bb 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -326,14 +326,7 @@ arch_initcall(dma_channel_table_init);
  */
 struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type)
 {
-        struct dma_chan *chan;
-        int cpu;
-
-        cpu = get_cpu();
-        chan = per_cpu_ptr(channel_table[tx_type], cpu)->chan;
-        put_cpu();
-
-        return chan;
+        return this_cpu_read(channel_table[tx_type]->chan);
 }
 EXPORT_SYMBOL(dma_find_channel);
 
@@ -857,7 +850,6 @@ dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest,
         struct dma_async_tx_descriptor *tx;
         dma_addr_t dma_dest, dma_src;
         dma_cookie_t cookie;
-        int cpu;
         unsigned long flags;
 
         dma_src = dma_map_single(dev->dev, src, len, DMA_TO_DEVICE);
@@ -876,10 +868,10 @@ dma_async_memcpy_buf_to_buf(struct dma_chan *chan, void *dest,
         tx->callback = NULL;
         cookie = tx->tx_submit(tx);
 
-        cpu = get_cpu();
-        per_cpu_ptr(chan->local, cpu)->bytes_transferred += len;
-        per_cpu_ptr(chan->local, cpu)->memcpy_count++;
-        put_cpu();
+        preempt_disable();
+        __this_cpu_add(chan->local->bytes_transferred, len);
+        __this_cpu_inc(chan->local->memcpy_count);
+        preempt_enable();
 
         return cookie;
 }
@@ -906,7 +898,6 @@ dma_async_memcpy_buf_to_pg(struct dma_chan *chan, struct page *page,
         struct dma_async_tx_descriptor *tx;
         dma_addr_t dma_dest, dma_src;
         dma_cookie_t cookie;
-        int cpu;
         unsigned long flags;
 
         dma_src = dma_map_single(dev->dev, kdata, len, DMA_TO_DEVICE);
@@ -923,10 +914,10 @@ dma_async_memcpy_buf_to_pg(struct dma_chan *chan, struct page *page,
         tx->callback = NULL;
         cookie = tx->tx_submit(tx);
 
-        cpu = get_cpu();
-        per_cpu_ptr(chan->local, cpu)->bytes_transferred += len;
-        per_cpu_ptr(chan->local, cpu)->memcpy_count++;
-        put_cpu();
+        preempt_disable();
+        __this_cpu_add(chan->local->bytes_transferred, len);
+        __this_cpu_inc(chan->local->memcpy_count);
+        preempt_enable();
 
         return cookie;
 }
@@ -955,7 +946,6 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
         struct dma_async_tx_descriptor *tx;
         dma_addr_t dma_dest, dma_src;
         dma_cookie_t cookie;
-        int cpu;
         unsigned long flags;
 
         dma_src = dma_map_page(dev->dev, src_pg, src_off, len, DMA_TO_DEVICE);
@@ -973,10 +963,10 @@ dma_async_memcpy_pg_to_pg(struct dma_chan *chan, struct page *dest_pg,
         tx->callback = NULL;
         cookie = tx->tx_submit(tx);
 
-        cpu = get_cpu();
-        per_cpu_ptr(chan->local, cpu)->bytes_transferred += len;
-        per_cpu_ptr(chan->local, cpu)->memcpy_count++;
-        put_cpu();
+        preempt_disable();
+        __this_cpu_add(chan->local->bytes_transferred, len);
+        __this_cpu_inc(chan->local->memcpy_count);
+        preempt_enable();
 
         return cookie;
 }
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index 4b89b791be6a..42be0b15084b 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -826,8 +826,7 @@ static void __cpuinit take_over_work(struct ehca_comp_pool *pool, int cpu)
                 cq = list_entry(cct->cq_list.next, struct ehca_cq, entry);
 
                 list_del(&cq->entry);
-                __queue_comp_task(cq, per_cpu_ptr(pool->cpu_comp_tasks,
-                                                  smp_processor_id()));
+                __queue_comp_task(cq, this_cpu_ptr(pool->cpu_comp_tasks));
         }
 
         spin_unlock_irqrestore(&cct->task_lock, flags_cct);
diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c
index 6ae388849a3b..fb2b7ef7868e 100644
--- a/drivers/lguest/x86/core.c
+++ b/drivers/lguest/x86/core.c
@@ -69,7 +69,7 @@ static struct lguest_pages *lguest_pages(unsigned int cpu)
                   (SWITCHER_ADDR + SHARED_SWITCHER_PAGES*PAGE_SIZE))[cpu]);
 }
 
-static DEFINE_PER_CPU(struct lg_cpu *, last_cpu);
+static DEFINE_PER_CPU(struct lg_cpu *, lg_last_cpu);
 
 /*S:010
  * We approach the Switcher.
@@ -90,8 +90,8 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages)
          * meanwhile).  If that's not the case, we pretend everything in the
          * Guest has changed.
          */
-        if (__get_cpu_var(last_cpu) != cpu || cpu->last_pages != pages) {
-                __get_cpu_var(last_cpu) = cpu;
+        if (__get_cpu_var(lg_last_cpu) != cpu || cpu->last_pages != pages) {
+                __get_cpu_var(lg_last_cpu) = cpu;
                 cpu->last_pages = pages;
                 cpu->changed = CHANGED_ALL;
         }
diff --git a/drivers/net/chelsio/sge.c b/drivers/net/chelsio/sge.c
index 8c658cf6f62f..109d2783e4d8 100644
--- a/drivers/net/chelsio/sge.c
+++ b/drivers/net/chelsio/sge.c
@@ -1378,7 +1378,7 @@ static void sge_rx(struct sge *sge, struct freelQ *fl, unsigned int len)
         }
         __skb_pull(skb, sizeof(*p));
 
-        st = per_cpu_ptr(sge->port_stats[p->iff], smp_processor_id());
+        st = this_cpu_ptr(sge->port_stats[p->iff]);
 
         skb->protocol = eth_type_trans(skb, adapter->port[p->iff].dev);
         if ((adapter->flags & RX_CSUM_ENABLED) && p->csum == 0xffff &&
@@ -1780,8 +1780,7 @@ netdev_tx_t t1_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
         struct adapter *adapter = dev->ml_priv;
         struct sge *sge = adapter->sge;
-        struct sge_port_stats *st = per_cpu_ptr(sge->port_stats[dev->if_port],
-                                                smp_processor_id());
+        struct sge_port_stats *st = this_cpu_ptr(sge->port_stats[dev->if_port]);
         struct cpl_tx_pkt *cpl;
         struct sk_buff *orig_skb = skb;
         int ret;
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index eae4ad749e9d..b9fcc9819837 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -81,7 +81,7 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb,
 
         /* it's OK to use per_cpu_ptr() because BHs are off */
         pcpu_lstats = dev->ml_priv;
-        lb_stats = per_cpu_ptr(pcpu_lstats, smp_processor_id());
+        lb_stats = this_cpu_ptr(pcpu_lstats);
 
         len = skb->len;
         if (likely(netif_rx(skb) == NET_RX_SUCCESS)) {
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 63099c58a6dd..3a15de56df9c 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -153,15 +153,14 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
         struct net_device *rcv = NULL;
         struct veth_priv *priv, *rcv_priv;
         struct veth_net_stats *stats, *rcv_stats;
-        int length, cpu;
+        int length;
 
         priv = netdev_priv(dev);
         rcv = priv->peer;
         rcv_priv = netdev_priv(rcv);
 
-        cpu = smp_processor_id();
-        stats = per_cpu_ptr(priv->stats, cpu);
-        rcv_stats = per_cpu_ptr(rcv_priv->stats, cpu);
+        stats = this_cpu_ptr(priv->stats);
+        rcv_stats = this_cpu_ptr(rcv_priv->stats);
 
         if (!(rcv->flags & IFF_UP))
                 goto tx_drop;
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index a7aae24f2889..166b67ea622f 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -47,7 +47,7 @@
  */
 static struct ring_buffer *op_ring_buffer_read;
 static struct ring_buffer *op_ring_buffer_write;
-DEFINE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
+DEFINE_PER_CPU(struct oprofile_cpu_buffer, op_cpu_buffer);
 
 static void wq_sync_buffer(struct work_struct *work);
 
@@ -61,8 +61,7 @@ unsigned long oprofile_get_cpu_buffer_size(void)
 
 void oprofile_cpu_buffer_inc_smpl_lost(void)
 {
-        struct oprofile_cpu_buffer *cpu_buf
-                = &__get_cpu_var(cpu_buffer);
+        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(op_cpu_buffer);
 
         cpu_buf->sample_lost_overflow++;
 }
@@ -95,7 +94,7 @@ int alloc_cpu_buffers(void)
                 goto fail;
 
         for_each_possible_cpu(i) {
-                struct oprofile_cpu_buffer *b = &per_cpu(cpu_buffer, i);
+                struct oprofile_cpu_buffer *b = &per_cpu(op_cpu_buffer, i);
 
                 b->last_task = NULL;
                 b->last_is_kernel = -1;
@@ -122,7 +121,7 @@ void start_cpu_work(void)
         work_enabled = 1;
 
         for_each_online_cpu(i) {
-                struct oprofile_cpu_buffer *b = &per_cpu(cpu_buffer, i);
+                struct oprofile_cpu_buffer *b = &per_cpu(op_cpu_buffer, i);
 
                 /*
                  * Spread the work by 1 jiffy per cpu so they dont all
@@ -139,7 +138,7 @@ void end_cpu_work(void)
         work_enabled = 0;
 
         for_each_online_cpu(i) {
-                struct oprofile_cpu_buffer *b = &per_cpu(cpu_buffer, i);
+                struct oprofile_cpu_buffer *b = &per_cpu(op_cpu_buffer, i);
 
                 cancel_delayed_work(&b->work);
         }
@@ -330,7 +329,7 @@ static inline void
 __oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs,
                           unsigned long event, int is_kernel)
 {
-        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
+        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(op_cpu_buffer);
         unsigned long backtrace = oprofile_backtrace_depth;
 
         /*
@@ -375,7 +374,7 @@ oprofile_write_reserve(struct op_entry *entry, struct pt_regs * const regs,
 {
         struct op_sample *sample;
         int is_kernel = !user_mode(regs);
-        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
+        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(op_cpu_buffer);
 
         cpu_buf->sample_received++;
 
@@ -430,13 +429,13 @@ int oprofile_write_commit(struct op_entry *entry)
 
 void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event)
 {
-        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
+        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(op_cpu_buffer);
         log_sample(cpu_buf, pc, 0, is_kernel, event);
 }
 
 void oprofile_add_trace(unsigned long pc)
 {
-        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
+        struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(op_cpu_buffer);
 
         if (!cpu_buf->tracing)
                 return;
diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
index 272995d20293..68ea16ab645f 100644
--- a/drivers/oprofile/cpu_buffer.h
+++ b/drivers/oprofile/cpu_buffer.h
@@ -50,7 +50,7 @@ struct oprofile_cpu_buffer {
         struct delayed_work work;
 };
 
-DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
+DECLARE_PER_CPU(struct oprofile_cpu_buffer, op_cpu_buffer);
 
 /*
  * Resets the cpu buffer to a sane state.
@@ -60,7 +60,7 @@ DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
  */
 static inline void op_cpu_buffer_reset(int cpu)
 {
-        struct oprofile_cpu_buffer *cpu_buf = &per_cpu(cpu_buffer, cpu);
+        struct oprofile_cpu_buffer *cpu_buf = &per_cpu(op_cpu_buffer, cpu);
 
         cpu_buf->last_is_kernel = -1;
         cpu_buf->last_task = NULL;
diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c
index 61689e814d46..917d28ebeacd 100644
--- a/drivers/oprofile/oprofile_stats.c
+++ b/drivers/oprofile/oprofile_stats.c
@@ -23,7 +23,7 @@ void oprofile_reset_stats(void)
         int i;
 
         for_each_possible_cpu(i) {
-                cpu_buf = &per_cpu(cpu_buffer, i);
+                cpu_buf = &per_cpu(op_cpu_buffer, i);
                 cpu_buf->sample_received = 0;
                 cpu_buf->sample_lost_overflow = 0;
                 cpu_buf->backtrace_aborted = 0;
@@ -51,7 +51,7 @@ void oprofile_create_stats_files(struct super_block *sb, struct dentry *root)
                 return;
 
         for_each_possible_cpu(i) {
-                cpu_buf = &per_cpu(cpu_buffer, i);
+                cpu_buf = &per_cpu(op_cpu_buffer, i);
                 snprintf(buf, 10, "cpu%d", i);
                 cpudir = oprofilefs_mkdir(sb, dir, buf);
 
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c
index 395c04c2b00f..98c04cac43c1 100644
--- a/drivers/s390/net/netiucv.c
+++ b/drivers/s390/net/netiucv.c
@@ -113,11 +113,9 @@ static inline int iucv_dbf_passes(debug_info_t *dbf_grp, int level)
 #define IUCV_DBF_TEXT_(name, level, text...) \
         do { \
                 if (iucv_dbf_passes(iucv_dbf_##name, level)) { \
-                        char* iucv_dbf_txt_buf = \
-                                        get_cpu_var(iucv_dbf_txt_buf); \
-                        sprintf(iucv_dbf_txt_buf, text); \
-                        debug_text_event(iucv_dbf_##name, level, \
-                                                iucv_dbf_txt_buf); \
+                        char* __buf = get_cpu_var(iucv_dbf_txt_buf); \
+                        sprintf(__buf, text); \
+                        debug_text_event(iucv_dbf_##name, level, __buf); \
                         put_cpu_var(iucv_dbf_txt_buf); \
                 } \
         } while (0)