On Mon, May 07, 2007 at 10:30:16AM -0700, Christoph Lameter wrote: > Call this area "cpu shared" or so?
There are some fields in percpu section which are accessed by other cpu's but not cache line aligned, e.g. cpu_idle_state, flush_state in x86-64. We don't want to place those fields into same subsection as cacheline aligned fields. So perhaps, I can change the section name .data.percpu.cacheline_aligned_in_smp to .data.percpu.shared_cacheline_aligned. And change macro DEFINE_PER_CPU_CACHELINE_ALIGNED_IN_SMP to DEFINE_PER_CPU_SHARED_CACHELINE_ALIGNED. .data.percpu.shared_cacheline_aligned contains only cpu shared percpu fields which are cacheline aligned. In future (or in a separate patch series), we can define another percpu section .data.percpu.shared and its macro DEFINE_PER_CPU_SHARED_CACHELINE_ALIGNED which store all of cpu shared percpu fields. The new .data.percpu.shared and DEFINE_PER_CPU_SHARED_CACHELINE_ALIGNED are for better coding and understanding. Thanks. -Fenghua - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
