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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-15 07:48:18 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-15 07:48:18 +0200
commit0429fbc0bdc297d64188483ba029a23773ae07b0 (patch)
tree67de46978c90f37540dd6ded1db20eb53a569030 /arch/ia64
parent6929c358972facf2999f8768815c40dd88514fc2 (diff)
parent513d1a2884a49654f368b5fa25ef186e976bdada (diff)
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull percpu consistent-ops changes from Tejun Heo: "Way back, before the current percpu allocator was implemented, static and dynamic percpu memory areas were allocated and handled separately and had their own accessors. The distinction has been gone for many years now; however, the now duplicate two sets of accessors remained with the pointer based ones - this_cpu_*() - evolving various other operations over time. During the process, we also accumulated other inconsistent operations. This pull request contains Christoph's patches to clean up the duplicate accessor situation. __get_cpu_var() uses are replaced with with this_cpu_ptr() and __this_cpu_ptr() with raw_cpu_ptr(). Unfortunately, the former sometimes is tricky thanks to C being a bit messy with the distinction between lvalues and pointers, which led to a rather ugly solution for cpumask_var_t involving the introduction of this_cpu_cpumask_var_ptr(). This converts most of the uses but not all. Christoph will follow up with the remaining conversions in this merge window and hopefully remove the obsolete accessors" * 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (38 commits) irqchip: Properly fetch the per cpu offset percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t -fix ia64: sn_nodepda cannot be assigned to after this_cpu conversion. Use __this_cpu_write. percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t Revert "powerpc: Replace __get_cpu_var uses" percpu: Remove __this_cpu_ptr clocksource: Replace __this_cpu_ptr with raw_cpu_ptr sparc: Replace __get_cpu_var uses avr32: Replace __get_cpu_var with __this_cpu_write blackfin: Replace __get_cpu_var uses tile: Use this_cpu_ptr() for hardware counters tile: Replace __get_cpu_var uses powerpc: Replace __get_cpu_var uses alpha: Replace __get_cpu_var ia64: Replace __get_cpu_var uses s390: cio driver &__get_cpu_var replacements s390: Replace __get_cpu_var uses mips: Replace __get_cpu_var uses MIPS: Replace __get_cpu_var uses in FPU emulator. arm: Replace __this_cpu_ptr with raw_cpu_ptr ...
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/include/asm/hw_irq.h2
-rw-r--r--arch/ia64/include/asm/sn/arch.h4
-rw-r--r--arch/ia64/include/asm/sn/nodepda.h2
-rw-r--r--arch/ia64/include/asm/switch_to.h2
-rw-r--r--arch/ia64/include/asm/uv/uv_hub.h2
-rw-r--r--arch/ia64/kernel/irq.c2
-rw-r--r--arch/ia64/kernel/irq_ia64.c4
-rw-r--r--arch/ia64/kernel/kprobes.c6
-rw-r--r--arch/ia64/kernel/mca.c16
-rw-r--r--arch/ia64/kernel/process.c6
-rw-r--r--arch/ia64/kernel/traps.c2
-rw-r--r--arch/ia64/sn/kernel/setup.c2
-rw-r--r--arch/ia64/sn/kernel/sn2/sn2_smp.c28
13 files changed, 39 insertions, 39 deletions
diff --git a/arch/ia64/include/asm/hw_irq.h b/arch/ia64/include/asm/hw_irq.h
index 029bab36cd91..668786e84af8 100644
--- a/arch/ia64/include/asm/hw_irq.h
+++ b/arch/ia64/include/asm/hw_irq.h
@@ -159,7 +159,7 @@ static inline ia64_vector __ia64_irq_to_vector(int irq)
static inline unsigned int
__ia64_local_vector_to_irq (ia64_vector vec)
{
- return __get_cpu_var(vector_irq)[vec];
+ return __this_cpu_read(vector_irq[vec]);
}
#endif
diff --git a/arch/ia64/include/asm/sn/arch.h b/arch/ia64/include/asm/sn/arch.h
index 7caa1f44cd95..31eb784866f8 100644
--- a/arch/ia64/include/asm/sn/arch.h
+++ b/arch/ia64/include/asm/sn/arch.h
@@ -57,7 +57,7 @@ struct sn_hub_info_s {
u16 nasid_bitmask;
};
DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
-#define sn_hub_info (&__get_cpu_var(__sn_hub_info))
+#define sn_hub_info this_cpu_ptr(&__sn_hub_info)
#define is_shub2() (sn_hub_info->shub2)
#define is_shub1() (sn_hub_info->shub2 == 0)
@@ -72,7 +72,7 @@ DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
* cpu.
*/
DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_COMPACT_NODES]);
-#define sn_cnodeid_to_nasid (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
+#define sn_cnodeid_to_nasid this_cpu_ptr(&__sn_cnodeid_to_nasid[0])
extern u8 sn_partition_id;
diff --git a/arch/ia64/include/asm/sn/nodepda.h b/arch/ia64/include/asm/sn/nodepda.h
index ee118b901de4..7c8b4710f071 100644
--- a/arch/ia64/include/asm/sn/nodepda.h
+++ b/arch/ia64/include/asm/sn/nodepda.h
@@ -70,7 +70,7 @@ typedef struct nodepda_s nodepda_t;
*/
DECLARE_PER_CPU(struct nodepda_s *, __sn_nodepda);
-#define sn_nodepda (__get_cpu_var(__sn_nodepda))
+#define sn_nodepda __this_cpu_read(__sn_nodepda)
#define NODEPDA(cnodeid) (sn_nodepda->pernode_pdaindr[cnodeid])
/*
diff --git a/arch/ia64/include/asm/switch_to.h b/arch/ia64/include/asm/switch_to.h
index d38c7ea5eea5..e8f3585e7e7a 100644
--- a/arch/ia64/include/asm/switch_to.h
+++ b/arch/ia64/include/asm/switch_to.h
@@ -32,7 +32,7 @@ extern void ia64_load_extra (struct task_struct *task);
#ifdef CONFIG_PERFMON
DECLARE_PER_CPU(unsigned long, pfm_syst_info);
-# define PERFMON_IS_SYSWIDE() (__get_cpu_var(pfm_syst_info) & 0x1)
+# define PERFMON_IS_SYSWIDE() (__this_cpu_read(pfm_syst_info) & 0x1)
#else
# define PERFMON_IS_SYSWIDE() (0)
#endif
diff --git a/arch/ia64/include/asm/uv/uv_hub.h b/arch/ia64/include/asm/uv/uv_hub.h
index 53e9dfacd073..2a88c7204e52 100644
--- a/arch/ia64/include/asm/uv/uv_hub.h
+++ b/arch/ia64/include/asm/uv/uv_hub.h
@@ -108,7 +108,7 @@ struct uv_hub_info_s {
unsigned char n_val;
};
DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
-#define uv_hub_info (&__get_cpu_var(__uv_hub_info))
+#define uv_hub_info this_cpu_ptr(&__uv_hub_info)
#define uv_cpu_hub_info(cpu) (&per_cpu(__uv_hub_info, cpu))
/*
diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c
index f2c418281130..812a1e6b3179 100644
--- a/arch/ia64/kernel/irq.c
+++ b/arch/ia64/kernel/irq.c
@@ -42,7 +42,7 @@ ia64_vector __ia64_irq_to_vector(int irq)
unsigned int __ia64_local_vector_to_irq (ia64_vector vec)
{
- return __get_cpu_var(vector_irq)[vec];
+ return __this_cpu_read(vector_irq[vec]);
}
#endif
diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c
index 03ea78ed64a9..698d8fefde6c 100644
--- a/arch/ia64/kernel/irq_ia64.c
+++ b/arch/ia64/kernel/irq_ia64.c
@@ -330,7 +330,7 @@ static irqreturn_t smp_irq_move_cleanup_interrupt(int irq, void *dev_id)
int irq;
struct irq_desc *desc;
struct irq_cfg *cfg;
- irq = __get_cpu_var(vector_irq)[vector];
+ irq = __this_cpu_read(vector_irq[vector]);
if (irq < 0)
continue;
@@ -344,7 +344,7 @@ static irqreturn_t smp_irq_move_cleanup_interrupt(int irq, void *dev_id)
goto unlock;
spin_lock_irqsave(&vector_lock, flags);
- __get_cpu_var(vector_irq)[vector] = -1;
+ __this_cpu_write(vector_irq[vector], -1);
cpu_clear(me, vector_table[vector]);
spin_unlock_irqrestore(&vector_lock, flags);
cfg->move_cleanup_count--;
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c
index 074fde49c9e6..c7c51445c3be 100644
--- a/arch/ia64/kernel/kprobes.c
+++ b/arch/ia64/kernel/kprobes.c
@@ -396,7 +396,7 @@ static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
{
unsigned int i;
i = atomic_read(&kcb->prev_kprobe_index);
- __get_cpu_var(current_kprobe) = kcb->prev_kprobe[i-1].kp;
+ __this_cpu_write(current_kprobe, kcb->prev_kprobe[i-1].kp);
kcb->kprobe_status = kcb->prev_kprobe[i-1].status;
atomic_sub(1, &kcb->prev_kprobe_index);
}
@@ -404,7 +404,7 @@ static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
static void __kprobes set_current_kprobe(struct kprobe *p,
struct kprobe_ctlblk *kcb)
{
- __get_cpu_var(current_kprobe) = p;
+ __this_cpu_write(current_kprobe, p);
}
static void kretprobe_trampoline(void)
@@ -823,7 +823,7 @@ static int __kprobes pre_kprobes_handler(struct die_args *args)
/*
* jprobe instrumented function just completed
*/
- p = __get_cpu_var(current_kprobe);
+ p = __this_cpu_read(current_kprobe);
if (p->break_handler && p->break_handler(p, regs)) {
goto ss_probe;
}
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index db7b36bb068b..8bfd36af46f8 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1341,7 +1341,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
ia64_mlogbuf_finish(1);
}
- if (__get_cpu_var(ia64_mca_tr_reload)) {
+ if (__this_cpu_read(ia64_mca_tr_reload)) {
mca_insert_tr(0x1); /*Reload dynamic itrs*/
mca_insert_tr(0x2); /*Reload dynamic itrs*/
}
@@ -1868,14 +1868,14 @@ ia64_mca_cpu_init(void *cpu_data)
"MCA", cpu);
format_mca_init_stack(data, offsetof(struct ia64_mca_cpu, init_stack),
"INIT", cpu);
- __get_cpu_var(ia64_mca_data) = __per_cpu_mca[cpu] = __pa(data);
+ __this_cpu_write(ia64_mca_data, (__per_cpu_mca[cpu] = __pa(data)));
/*
* Stash away a copy of the PTE needed to map the per-CPU page.
* We may need it during MCA recovery.
*/
- __get_cpu_var(ia64_mca_per_cpu_pte) =
- pte_val(mk_pte_phys(__pa(cpu_data), PAGE_KERNEL));
+ __this_cpu_write(ia64_mca_per_cpu_pte,
+ pte_val(mk_pte_phys(__pa(cpu_data), PAGE_KERNEL)));
/*
* Also, stash away a copy of the PAL address and the PTE
@@ -1884,10 +1884,10 @@ ia64_mca_cpu_init(void *cpu_data)
pal_vaddr = efi_get_pal_addr();
if (!pal_vaddr)
return;
- __get_cpu_var(ia64_mca_pal_base) =
- GRANULEROUNDDOWN((unsigned long) pal_vaddr);
- __get_cpu_var(ia64_mca_pal_pte) = pte_val(mk_pte_phys(__pa(pal_vaddr),
- PAGE_KERNEL));
+ __this_cpu_write(ia64_mca_pal_base,
+ GRANULEROUNDDOWN((unsigned long) pal_vaddr));
+ __this_cpu_write(ia64_mca_pal_pte, pte_val(mk_pte_phys(__pa(pal_vaddr),
+ PAGE_KERNEL)));
}
static void ia64_mca_cmc_vector_adjust(void *dummy)
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index deed6fa96bb0..b51514957620 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -215,7 +215,7 @@ static inline void play_dead(void)
unsigned int this_cpu = smp_processor_id();
/* Ack it */
- __get_cpu_var(cpu_state) = CPU_DEAD;
+ __this_cpu_write(cpu_state, CPU_DEAD);
max_xtp();
local_irq_disable();
@@ -273,7 +273,7 @@ ia64_save_extra (struct task_struct *task)
if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
pfm_save_regs(task);
- info = __get_cpu_var(pfm_syst_info);
+ info = __this_cpu_read(pfm_syst_info);
if (info & PFM_CPUINFO_SYST_WIDE)
pfm_syst_wide_update_task(task, info, 0);
#endif
@@ -293,7 +293,7 @@ ia64_load_extra (struct task_struct *task)
if ((task->thread.flags & IA64_THREAD_PM_VALID) != 0)
pfm_load_regs(task);
- info = __get_cpu_var(pfm_syst_info);
+ info = __this_cpu_read(pfm_syst_info);
if (info & PFM_CPUINFO_SYST_WIDE)
pfm_syst_wide_update_task(task, info, 1);
#endif
diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c
index d3636e67a98e..6f7d4a4dcf24 100644
--- a/arch/ia64/kernel/traps.c
+++ b/arch/ia64/kernel/traps.c
@@ -299,7 +299,7 @@ handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr)
if (!(current->thread.flags & IA64_THREAD_FPEMU_NOPRINT)) {
unsigned long count, current_jiffies = jiffies;
- struct fpu_swa_msg *cp = &__get_cpu_var(cpulast);
+ struct fpu_swa_msg *cp = this_cpu_ptr(&cpulast);
if (unlikely(current_jiffies > cp->time))
cp->count = 0;
diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 36182c84363c..5f6b6b48c1d5 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -629,7 +629,7 @@ void sn_cpu_init(void)
cnode = nasid_to_cnodeid(nasid);
- sn_nodepda = nodepdaindr[cnode];
+ __this_cpu_write(__sn_nodepda, nodepdaindr[cnode]);
pda->led_address =
(typeof(pda->led_address)) (LED0 + (slice << LED_CPU_SHIFT));
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index 68c845411624..f9c8d9fc5939 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -134,8 +134,8 @@ sn2_ipi_flush_all_tlb(struct mm_struct *mm)
itc = ia64_get_itc();
smp_flush_tlb_cpumask(*mm_cpumask(mm));
itc = ia64_get_itc() - itc;
- __get_cpu_var(ptcstats).shub_ipi_flushes_itc_clocks += itc;
- __get_cpu_var(ptcstats).shub_ipi_flushes++;
+ __this_cpu_add(ptcstats.shub_ipi_flushes_itc_clocks, itc);
+ __this_cpu_inc(ptcstats.shub_ipi_flushes);
}
/**
@@ -199,14 +199,14 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
start += (1UL << nbits);
} while (start < end);
ia64_srlz_i();
- __get_cpu_var(ptcstats).ptc_l++;
+ __this_cpu_inc(ptcstats.ptc_l);
preempt_enable();
return;
}
if (atomic_read(&mm->mm_users) == 1 && mymm) {
flush_tlb_mm(mm);
- __get_cpu_var(ptcstats).change_rid++;
+ __this_cpu_inc(ptcstats.change_rid);
preempt_enable();
return;
}
@@ -250,11 +250,11 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
spin_lock_irqsave(PTC_LOCK(shub1), flags);
itc2 = ia64_get_itc();
- __get_cpu_var(ptcstats).lock_itc_clocks += itc2 - itc;
- __get_cpu_var(ptcstats).shub_ptc_flushes++;
- __get_cpu_var(ptcstats).nodes_flushed += nix;
+ __this_cpu_add(ptcstats.lock_itc_clocks, itc2 - itc);
+ __this_cpu_inc(ptcstats.shub_ptc_flushes);
+ __this_cpu_add(ptcstats.nodes_flushed, nix);
if (!mymm)
- __get_cpu_var(ptcstats).shub_ptc_flushes_not_my_mm++;
+ __this_cpu_inc(ptcstats.shub_ptc_flushes_not_my_mm);
if (use_cpu_ptcga && !mymm) {
old_rr = ia64_get_rr(start);
@@ -299,9 +299,9 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
done:
itc2 = ia64_get_itc() - itc2;
- __get_cpu_var(ptcstats).shub_itc_clocks += itc2;
- if (itc2 > __get_cpu_var(ptcstats).shub_itc_clocks_max)
- __get_cpu_var(ptcstats).shub_itc_clocks_max = itc2;
+ __this_cpu_add(ptcstats.shub_itc_clocks, itc2);
+ if (itc2 > __this_cpu_read(ptcstats.shub_itc_clocks_max))
+ __this_cpu_write(ptcstats.shub_itc_clocks_max, itc2);
if (old_rr) {
ia64_set_rr(start, old_rr);
@@ -311,7 +311,7 @@ done:
spin_unlock_irqrestore(PTC_LOCK(shub1), flags);
if (flush_opt == 1 && deadlock) {
- __get_cpu_var(ptcstats).deadlocks++;
+ __this_cpu_inc(ptcstats.deadlocks);
sn2_ipi_flush_all_tlb(mm);
}
@@ -334,7 +334,7 @@ sn2_ptc_deadlock_recovery(short *nasids, short ib, short ie, int mynasid,
short nasid, i;
unsigned long *piows, zeroval, n;
- __get_cpu_var(ptcstats).deadlocks++;
+ __this_cpu_inc(ptcstats.deadlocks);
piows = (unsigned long *) pda->pio_write_status_addr;
zeroval = pda->pio_write_status_val;
@@ -349,7 +349,7 @@ sn2_ptc_deadlock_recovery(short *nasids, short ib, short ie, int mynasid,
ptc1 = CHANGE_NASID(nasid, ptc1);
n = sn2_ptc_deadlock_recovery_core(ptc0, data0, ptc1, data1, piows, zeroval);
- __get_cpu_var(ptcstats).deadlocks2 += n;
+ __this_cpu_add(ptcstats.deadlocks2, n);
}
}