On Thu, 2012-08-09 at 16:54 -0700, David Daney wrote: > On 08/09/2012 04:16 PM, H. Peter Anvin wrote: > > On 08/09/2012 03:25 PM, Steven Rostedt wrote: > >>> > >>> It might be better to improve gcc to move really cold branches out of > >>> line (really, really far away), and use the compiler to do this, rather > >>> than to use an extra indirection that adds bloat and complexity to the > >>> kernel. > > Oh, you mean like: -freorder-blocks-and-partition
Actually, what would be really nice is to place a block in a section of your choice. Something like: if (unlikely(x)) __attribute__((section(".unlikely"))) { /* code here will be in the ".unlikely" section */ } -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/