On Thu, Jun 26, 2014 at 09:23:07AM +0800, kbuild test robot wrote: > kernel/printk/printk.c: In function 'log_buf_add_cpu': > >> kernel/printk/printk.c:269:37: error: 'CONFIG_LOG_CPU_MAX_BUF_SHIFT' undeclared (first use in this function) > #define __LOG_CPU_MAX_BUF_LEN (1 << CONFIG_LOG_CPU_MAX_BUF_SHIFT) Indeed, this fixes it, Andrew should I respin or submit a fix for this as a separate patch, let me know what you prefer. Luis diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 83f7a95..65ed0a6 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -266,7 +266,11 @@ static u32 clear_idx; #define LOG_ALIGN __alignof__(struct printk_log) #endif #define __LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT) +#if defined(CONFIG_LOG_CPU_MAX_BUF_SHIFT) #define __LOG_CPU_MAX_BUF_LEN (1 << CONFIG_LOG_CPU_MAX_BUF_SHIFT) +#else +#define __LOG_CPU_MAX_BUF_LEN 1 +#endif static char __log_buf[__LOG_BUF_LEN] __aligned(LOG_ALIGN); static char *log_buf = __log_buf; static u32 log_buf_len = __LOG_BUF_LEN; -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>