From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Tue, 25 Oct 2016 19:04:08 +0100 Subject: [PATCH] arm64: Neaten show_regs, remove KERN_CONT In-Reply-To: References: <4cbf196b83cd9d175634e7056744dc649ae87f63.1477253239.git.joe@perches.com> <20161024113131.GH15620@leverpostej> <1477326477.1984.2.camel@perches.com> <20161024164255.GN15620@leverpostej> Message-ID: <20161025180408.GF8898@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Oct 25, 2016 at 10:38:31AM -0700, Linus Torvalds wrote: > On Mon, Oct 24, 2016 at 9:42 AM, Mark Rutland wrote: > > > > That does not appear to be the case; as fr as I can tell the core prints a > > timestamp per line as required. If I run: > > > > printk("TEST\nLINE1\nLINE2\nLINE3\nLINE4\n"); > > Please don't do this. > > It has historically not worked well, and it still doesn't actually > work reliably. In particular, it currently works in the *logs* (ie > dmesg), but not necessarily on screen (because "msg_print_text()" does > do the "look for newlines in the middle", but console_cont_flush() > does not). Sure; I'll avoid that. it seems that's a drop in the ocean, though. :/ [mark at leverpostej:~/src/linux]% git grep 'pr\(intk\|_.*\)(.*)' | grep '\\n[^"]' | wc -l 375 > So you can try the attached patch. It likely fixes your issues simply > because it removes all the crazy code. That worked for me. I see consistent results over the UART and in dmesg with that applied atop of v4.9-rc2. Feel free to add: Tested-by: Mark Rutland Thanks, Mark.