dev_dbg宏打开案例 在Linux内核开发中,dev_dbg宏用于输出调试信息,但默认情况下其输出是关闭的。下面将通过一个具体案例来展示如何打开并使用dev_dbg宏。 案例背景 假设我们正在开发一个Linux内核驱动,并希望在调试过程中能够输出详细的调试信息。 dev_dbg宏的定义 在Linux内核中,dev_dbg宏的定义通常位于include/linu...
This document describes how to use the dynamic debug (dyndbg) feature. Dynamic debug is designed to allow you to dynamically enable/disable kernel code to obtain additional kernel information. Currently, if CONFIG_DYNAMIC_DEBUG is set, then all pr_debug()/dev_dbg() and print_hex_dump_debug(...
63:/* now that ddebug tables are loaded, process all boot args 64:* again to find and activate queries given in dyndbg params. 65:* While this has already been done for known boot params, it 66:* ignored the unknown ones (dyndbg in particular). Reusing 67:* parse_args avoids ad-...
<7>[ 0.015794] doing dyndbg params, parsing ARGS: 'sched_enable_hmp=1 sched_enable_power_aware=1 snd_soc_wcd_mbhc.dyndbg="file wcd-mbhc-v2.c +p" snd_soc_tfa98xx.dyndbg="file tfa98xx.c +p; file tfa_dsp.c +p" console=ttyHSL0,115200,n8 androidboot.console=ttyHSL0 androidboot...
Hello, I'm modifying the xilinxfb.c driver to work with a custom tft lcd controller pcore and I need to see the debug messages when the target board is booting. I do not know how to enable output of dev_dbg() though. Any help would be appreciated. FYI: I'm working on the ML405...
pr_debug、dev_dbg等动态调试一 pr_debug: AI检测代码解析 #if defined(CONFIG_DYNAMIC_DEBUG) 1. AI检测代码解析 /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */ 1. AI检测代码解析 #define pr_debug(fmt, ...) \...
Could somebody explain to newbie like me how to enable the dev_dbg messages as defined in device.h? I understand that the DEBUG variable must be set, but enabling various options in "Kernel hacking" of menuconfig was not successful so far. If I manually define DEBUG in device.h, then I...
DBG(DBG_ERR, "hi_mpi_vi_set_dev_attr failed with 0x%x!\n", ret); return -2; } ret = hi_mpi_vi_enable_dev(vi_dev); if (ret != HI_SUCCESS) { DBG(DBG_ERR, "hi_mpi_vi_enable_dev failed with 0x%x!\n", ret); return -3; } hi_vi_dev_bind_pipe stDevBindPipe = {0};...
问container_of、dev_set_drvdata和dev_get_drvdata的使用EN在linux 内核编程中，会经常见到一个宏函数container_of(ptr,type,member), 但是当你通过追踪源码时，像我们这样的一般人就会绝望了（这一堆都是什么呀？函数还可以这样定义？？？怎么还有0呢？？？ 哎，算了，还是放弃吧。。。）。这就是内核大佬们...
问USB硬盘驱动器没有出现在/dev/下面EN在大多数的计算机系统上，Linux 或者是其它，当你插入一个 USB ...