diff options
author | Christoph Lameter <cl@linux.com> | 2010-12-06 11:16:29 -0600 |
---|---|---|
committer | Tejun Heo <tj@kernel.org> | 2010-12-17 15:07:19 +0100 |
commit | 780f36d8b3fa9572f731d4fb85067b2e45e6f993 (patch) | |
tree | 26c2f80122cd863232de2e295e8435f06c9e2527 | |
parent | c7b92516a9c68fa5403879225a5a19974a801ef6 (diff) |
xen: Use this_cpu_ops
Use this_cpu_ops to reduce code size and simplify things in various places.
V3->V4:
Move instance of this_cpu_inc_return to a later patchset so that
this patch can be applied without infrastructure changes.
Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
-rw-r--r-- | arch/x86/xen/enlighten.c | 4 | ||||
-rw-r--r-- | arch/x86/xen/multicalls.h | 2 | ||||
-rw-r--r-- | arch/x86/xen/spinlock.c | 8 | ||||
-rw-r--r-- | arch/x86/xen/time.c | 8 | ||||
-rw-r--r-- | drivers/xen/events.c | 8 |
5 files changed, 15 insertions, 15 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 44dcad43989..aa8c89ae54c 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -574,8 +574,8 @@ static void xen_write_idt_entry(gate_desc *dt, int entrynum, const gate_desc *g) preempt_disable(); - start = __get_cpu_var(idt_desc).address; - end = start + __get_cpu_var(idt_desc).size + 1; + start = __this_cpu_read(idt_desc.address); + end = start + __this_cpu_read(idt_desc.size) + 1; xen_mc_flush(); diff --git a/arch/x86/xen/multicalls.h b/arch/x86/xen/multicalls.h index 9e565da5d1f..4ec8035e321 100644 --- a/arch/x86/xen/multicalls.h +++ b/arch/x86/xen/multicalls.h @@ -22,7 +22,7 @@ static inline void xen_mc_batch(void) unsigned long flags; /* need to disable interrupts until this entry is complete */ local_irq_save(flags); - __get_cpu_var(xen_mc_irq_flags) = flags; + __this_cpu_write(xen_mc_irq_flags, flags); } static inline struct multicall_space xen_mc_entry(size_t args) diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index 23e061b9327..cc9b1e182fc 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -159,8 +159,8 @@ static inline struct xen_spinlock *spinning_lock(struct xen_spinlock *xl) { struct xen_spinlock *prev; - prev = __get_cpu_var(lock_spinners); - __get_cpu_var(lock_spinners) = xl; + prev = __this_cpu_read(lock_spinners); + __this_cpu_write(lock_spinners, xl); wmb(); /* set lock of interest before count */ @@ -179,14 +179,14 @@ static inline void unspinning_lock(struct xen_spinlock *xl, struct xen_spinlock asm(LOCK_PREFIX " decw %0" : "+m" (xl->spinners) : : "memory"); wmb(); /* decrement count before restoring lock */ - __get_cpu_var(lock_spinners) = prev; + __this_cpu_write(lock_spinners, prev); } static noinline int xen_spin_lock_slow(struct arch_spinlock *lock, bool irq_enable) { struct xen_spinlock *xl = (struct xen_spinlock *)lock; struct xen_spinlock *prev; - int irq = __get_cpu_var(lock_kicker_irq); + int irq = __this_cpu_read(lock_kicker_irq); int ret; u64 start; diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index b2bb5aa3b05..ef8930f51b0 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -135,24 +135,24 @@ static void do_stolen_accounting(void) /* Add the appropriate number of ticks of stolen time, including any left-overs from last time. */ - stolen = runnable + offline + __get_cpu_var(xen_residual_stolen); + stolen = runnable + offline + __this_cpu_read(xen_residual_stolen); if (stolen < 0) stolen = 0; ticks = iter_div_u64_rem(stolen, NS_PER_TICK, &stolen); - __get_cpu_var(xen_residual_stolen) = stolen; + __this_cpu_write(xen_residual_stolen, stolen); account_steal_ticks(ticks); /* Add the appropriate number of ticks of blocked time, including any left-overs from last time. */ - blocked += __get_cpu_var(xen_residual_blocked); + blocked += __this_cpu_read(xen_residual_blocked); if (blocked < 0) blocked = 0; ticks = iter_div_u64_rem(blocked, NS_PER_TICK, &blocked); - __get_cpu_var(xen_residual_blocked) = blocked; + __this_cpu_write(xen_residual_blocked, blocked); account_idle_ticks(ticks); } diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 31af0ac31a9..a10c66dc9dd 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -355,7 +355,7 @@ static void unmask_evtchn(int port) struct evtchn_unmask unmask = { .port = port }; (void)HYPERVISOR_event_channel_op(EVTCHNOP_unmask, &unmask); } else { - struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu); + struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu); sync_clear_bit(port, &s->evtchn_mask[0]); @@ -1101,7 +1101,7 @@ static void __xen_evtchn_do_upcall(void) { int cpu = get_cpu(); struct shared_info *s = HYPERVISOR_shared_info; - struct vcpu_info *vcpu_info = __get_cpu_var(xen_vcpu); + struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu); unsigned count; do { @@ -1141,8 +1141,8 @@ static void __xen_evtchn_do_upcall(void) BUG_ON(!irqs_disabled()); - count = __get_cpu_var(xed_nesting_count); - __get_cpu_var(xed_nesting_count) = 0; + count = __this_cpu_read(xed_nesting_count); + __this_cpu_write(xed_nesting_count, 0); } while (count != 1 || vcpu_info->evtchn_upcall_pending); out: |