From: Eric Dumazet Date: Wed, 14 May 2008 23:05:31 +0000 (-0700) Subject: oprofile: don't request cache line alignment for cpu_buffer X-Git-Tag: v2.6.26-rc3~57 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8b8b498836942c0c855333d357d121c0adeefbd9;p=linux-2.6-omap-h63xx.git oprofile: don't request cache line alignment for cpu_buffer Alignment was previously requested because cpu_buffer was an [NR_CPUS] array, to avoid cache line sharing between CPUS. After commit 608dfddd845da5ab6accef70154c8910529699f7 (oprofile: change cpu_buffer from array to per_cpu variable ), we dont need to force an alignement anymore since cpu_buffer sits in per_cpu zone. Signed-off-by: Eric Dumazet Cc: Mike Travis Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index efcbf4b4579..2450b3a393f 100644 --- a/drivers/oprofile/cpu_buffer.c +++ b/drivers/oprofile/cpu_buffer.c @@ -27,7 +27,7 @@ #include "buffer_sync.h" #include "oprof.h" -DEFINE_PER_CPU_SHARED_ALIGNED(struct oprofile_cpu_buffer, cpu_buffer); +DEFINE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer); static void wq_sync_buffer(struct work_struct *work); diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h index 13588174311..c3e366b5226 100644 --- a/drivers/oprofile/cpu_buffer.h +++ b/drivers/oprofile/cpu_buffer.h @@ -46,7 +46,7 @@ struct oprofile_cpu_buffer { unsigned long sample_invalid_eip; int cpu; struct delayed_work work; -} ____cacheline_aligned; +}; DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);