我們通常在config裡面配置這麼一句“CONFIG_CMDLINE="console=tty0 console=ttyMT3,921600n1 root=/dev/ram"”,然後修改console的賦值就可以改變輸出的位置,代碼中如何?的呢?這裡緊接著上文中的printk.c檔案中,有這麼一個函數先看一下:/* * Set up a list of consoles. Called from
proc/version平時的時候我們都在用cat /proc/version來獲得我們核心的版本號碼,但是是如何產生的呢?let's see see fs/proc/version.c。static int version_proc_show(struct seq_file *m, void *v){seq_printf(m, linux_proc_banner,utsname()->sysname,utsname()->release,utsname()->version)
4.11.3 ConditionalInclusionIt is possible to control preprocessing itself with conditionalstatements that are evaluated during preprocessing. This provides away to include code selectively, depending on the value ofconditions evaluated during
友元:友元函數:#includeusing namespace std ;class Time { public: Time (int,int ,int ); friend voiddisplay (Time &); private: inthour; intminute; int sec;};Time ::Time(int h , int m ,int s ){ hour = h; minute = m; sec
終於是有空來學習你了。呵呵UML AssessmentUML is messy, imprecise, complex, and sprawling. That is both a fault and a virtue. Anything intended for such widespread usage is going to be messy.You don't have to know or use every feature of UML any more than you need
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