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 <[e-mail]>
Cc: Mike Travis <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/oprofile/cpu_buffer.c

···
 #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);
 

drivers/oprofile/cpu_buffer.h

···
 	unsigned long sample_invalid_eip;
 	int cpu;
 	struct delayed_work work;
-} ____cacheline_aligned;
+};
 
 DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);