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authorTejun Heo <tj@kernel.org>2009-06-24 15:13:47 +0900
committerTejun Heo <tj@kernel.org>2009-06-24 15:13:47 +0900
commitb9bf3121af348d9255f1c917830fe8c2df52efcb (patch)
tree477f93b1000d7ac4bd283ee75d632b107eaf9600
parent204fba4aa303ea4a7bb726a539bf4a5b9e3203d0 (diff)
percpu: use DEFINE_PER_CPU_SHARED_ALIGNED()
There are a few places where ___cacheline_aligned* is used with DEFINE_PER_CPU(). Use DEFINE_PER_CPU_SHARED_ALIGNED() instead. DEFINE_PER_CPU_SHARED_ALIGNED() applies alignment only on SMPs. While all other converted places used _in_smp variant or only get compiled for SMP, net/rds used unconditional ____cacheline_aligned. I don't see any reason these data structures should be aligned on UP and thus converted together. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Andy Grover <andy.grover@oracle.com>
-rw-r--r--arch/blackfin/mm/sram-alloc.c6
-rw-r--r--arch/ia64/kernel/smp.c3
-rw-r--r--kernel/sched.c4
-rw-r--r--net/rds/ib_stats.c2
-rw-r--r--net/rds/iw_stats.c2
-rw-r--r--net/rds/page.c2
6 files changed, 10 insertions, 9 deletions
diff --git a/arch/blackfin/mm/sram-alloc.c b/arch/blackfin/mm/sram-alloc.c
index 0bc3c4ef0aad..99e4dbb1dfd1 100644
--- a/arch/blackfin/mm/sram-alloc.c
+++ b/arch/blackfin/mm/sram-alloc.c
@@ -42,9 +42,9 @@
#include <asm/mem_map.h>
#include "blackfin_sram.h"
-static DEFINE_PER_CPU(spinlock_t, l1sram_lock) ____cacheline_aligned_in_smp;
-static DEFINE_PER_CPU(spinlock_t, l1_data_sram_lock) ____cacheline_aligned_in_smp;
-static DEFINE_PER_CPU(spinlock_t, l1_inst_sram_lock) ____cacheline_aligned_in_smp;
+static DEFINE_PER_CPU_SHARED_ALIGNED(spinlock_t, l1sram_lock);
+static DEFINE_PER_CPU_SHARED_ALIGNED(spinlock_t, l1_data_sram_lock);
+static DEFINE_PER_CPU_SHARED_ALIGNED(spinlock_t, l1_inst_sram_lock);
static spinlock_t l2_sram_lock ____cacheline_aligned_in_smp;
/* the data structure for L1 scratchpad and DATA SRAM */
diff --git a/arch/ia64/kernel/smp.c b/arch/ia64/kernel/smp.c
index 94cf78ba28fa..93ebfea43c6c 100644
--- a/arch/ia64/kernel/smp.c
+++ b/arch/ia64/kernel/smp.c
@@ -58,7 +58,8 @@ static struct local_tlb_flush_counts {
unsigned int count;
} __attribute__((__aligned__(32))) local_tlb_flush_counts[NR_CPUS];
-static DEFINE_PER_CPU(unsigned short [NR_CPUS], shadow_flush_counts) ____cacheline_aligned;
+static DEFINE_PER_CPU_SHARED_ALIGNED(unsigned short [NR_CPUS],
+ shadow_flush_counts);
#define IPI_CALL_FUNC 0
#define IPI_CPU_STOP 1
diff --git a/kernel/sched.c b/kernel/sched.c
index 7c9098d186e6..34fd81d21784 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -318,12 +318,12 @@ struct task_group root_task_group;
/* Default task group's sched entity on each cpu */
static DEFINE_PER_CPU(struct sched_entity, init_sched_entity);
/* Default task group's cfs_rq on each cpu */
-static DEFINE_PER_CPU(struct cfs_rq, init_cfs_rq) ____cacheline_aligned_in_smp;
+static DEFINE_PER_CPU_SHARED_ALIGNED(struct cfs_rq, init_cfs_rq);
#endif /* CONFIG_FAIR_GROUP_SCHED */
#ifdef CONFIG_RT_GROUP_SCHED
static DEFINE_PER_CPU(struct sched_rt_entity, init_sched_rt_entity);
-static DEFINE_PER_CPU(struct rt_rq, init_rt_rq) ____cacheline_aligned_in_smp;
+static DEFINE_PER_CPU_SHARED_ALIGNED(struct rt_rq, init_rt_rq);
#endif /* CONFIG_RT_GROUP_SCHED */
#else /* !CONFIG_USER_SCHED */
#define root_task_group init_task_group
diff --git a/net/rds/ib_stats.c b/net/rds/ib_stats.c
index 02e3e3d50d4a..301ae51ae409 100644
--- a/net/rds/ib_stats.c
+++ b/net/rds/ib_stats.c
@@ -37,7 +37,7 @@
#include "rds.h"
#include "ib.h"
-DEFINE_PER_CPU(struct rds_ib_statistics, rds_ib_stats) ____cacheline_aligned;
+DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats);
static char *rds_ib_stat_names[] = {
"ib_connect_raced",
diff --git a/net/rds/iw_stats.c b/net/rds/iw_stats.c
index ccc7e8f0bf0e..fafea3cc92d7 100644
--- a/net/rds/iw_stats.c
+++ b/net/rds/iw_stats.c
@@ -37,7 +37,7 @@
#include "rds.h"
#include "iw.h"
-DEFINE_PER_CPU(struct rds_iw_statistics, rds_iw_stats) ____cacheline_aligned;
+DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_iw_statistics, rds_iw_stats);
static char *rds_iw_stat_names[] = {
"iw_connect_raced",
diff --git a/net/rds/page.c b/net/rds/page.c
index c460743a89ad..de7bb84bcd78 100644
--- a/net/rds/page.c
+++ b/net/rds/page.c
@@ -39,7 +39,7 @@ struct rds_page_remainder {
unsigned long r_offset;
};
-DEFINE_PER_CPU(struct rds_page_remainder, rds_page_remainders) ____cacheline_aligned;
+DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_page_remainder, rds_page_remainders);
/*
* returns 0 on success or -errno on failure.