The bottom of kernel rbs stack is the memory used to spill user dirty stack register partition when entering the kernel. This space is heavily used on every kernel entry and exit. It deserve having its own dedicated cache line and not to share with tail end of thread_info which is not used heavily. Align the bottom of kernel rbs stack to 128 byte boundary. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> --- ./include/asm-ia64/ptrace.h.orig 2006-01-19 16:45:49.695591377 -0800 +++ ./include/asm-ia64/ptrace.h 2006-01-20 02:24:05.985205410 -0800 @@ -75,7 +75,7 @@ # define KERNEL_STACK_SIZE_ORDER 0 #endif -#define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 15) & ~15) +#define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 127) & ~127) #define IA64_STK_OFFSET ((1 << KERNEL_STACK_SIZE_ORDER)*PAGE_SIZE) #define KERNEL_STACK_SIZE IA64_STK_OFFSET - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.htmlReceived on Tue Jan 31 19:49:12 2006
This archive was generated by hypermail 2.1.8 : 2006-01-31 19:49:21 EST