Messages in this thread | | | Date | Wed, 30 Aug 2017 10:03:48 +0900 | From | Sergey Senozhatsky <> | Subject | Re: printk: what is going on with additional newlines? |
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Hello,
On (08/29/17 19:50), Steven Rostedt wrote: [..] > > A private buffer has none of those issues. > > What about using the seq_buf*() then? > > struct seq_buf s; > > buf = kmalloc(mysize); > seq_buf_init(&s, buf, mysize); > > seq_printf(&s,"blah blah %d", bah_blah); > [...] > seq_printf(&s, "my last print\n"); > > printk("%.*s", s.len, s.buffer); > > kfree(buf);
could do. for a single continuation line printk("%.*s", s.len, s.buffer) this will work perfectly fine. for a more general case - backtraces, dumps, etc. - this requires some tweaks.
-ss
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