1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun 3*4882a593Smuzhiyunconfig GPROF 4*4882a593Smuzhiyun bool "Enable gprof support" 5*4882a593Smuzhiyun depends on DEBUG_INFO && FRAME_POINTER 6*4882a593Smuzhiyun help 7*4882a593Smuzhiyun This allows profiling of a User-Mode Linux kernel with the gprof 8*4882a593Smuzhiyun utility. 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more 11*4882a593Smuzhiyun details. 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun If you're involved in UML kernel development and want to use gprof, 14*4882a593Smuzhiyun say Y. If you're unsure, say N. 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunconfig GCOV 17*4882a593Smuzhiyun bool "Enable gcov support" 18*4882a593Smuzhiyun depends on DEBUG_INFO 19*4882a593Smuzhiyun depends on !KCOV 20*4882a593Smuzhiyun depends on !MODULES 21*4882a593Smuzhiyun help 22*4882a593Smuzhiyun This option allows developers to retrieve coverage data from a UML 23*4882a593Smuzhiyun session. 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun See <http://user-mode-linux.sourceforge.net/old/gprof.html> for more 26*4882a593Smuzhiyun details. 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun If you're involved in UML kernel development and want to use gcov, 29*4882a593Smuzhiyun say Y. If you're unsure, say N. 30*4882a593Smuzhiyun 31*4882a593Smuzhiyunconfig EARLY_PRINTK 32*4882a593Smuzhiyun bool "Early printk" 33*4882a593Smuzhiyun default y 34*4882a593Smuzhiyun help 35*4882a593Smuzhiyun Write kernel log output directly to stdout. 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun This is useful for kernel debugging when your machine crashes very 38*4882a593Smuzhiyun early before the console code is initialized. 39