On Sat, 2017-07-08 at 00:30 +0800, Pierre Kuo wrote: > In 8b1742c9c207, we remove printk-recursion detection code in > vprintk_emit(), where it is the first place that printed_len calculated. > After removing above detection, it seems we can directly assign the > result of log_output to printed_len. [] > diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c [] > @@ -1754,7 +1754,7 @@ asmlinkage int vprintk_emit(int facility, int level, > if (dict) > lflags |= LOG_PREFIX|LOG_NEWLINE; > > - printed_len += log_output(facility, level, lflags, dict, dictlen, text, > text_len); > + printed_len = log_output(facility, level, lflags, dict, dictlen, text, > text_len);
If this is appropriate, this should also remove the initialization of printed_len and perhaps rename it too.