Petr Mladek 427934b871 printk/nmi: increase the size of NMI buffer and make it configurable ... Testing has shown that the backtrace sometimes does not fit into the 4kB temporary buffer that is used in NMI context. The warnings are gone when I double the temporary buffer size. This patch doubles the buffer size and makes it configurable. Note that this problem existed even in the x86-specific implementation that was added by the commit a9edc88093 ("x86/nmi: Perform a safe NMI stack trace on all CPUs"). Nobody noticed it because it did not print any warnings. Signed-off-by: Petr Mladek <pmladek@suse.com> Cc: Jan Kara <jack@suse.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: Jiri Kosina <jkosina@suse.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: David Miller <davem@davemloft.net> Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2016-05-20 17:58:30 -07:00
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Makefile	printk/nmi: generic solution for safe printk in NMI	2016-05-20 17:58:30 -07:00
braille.c	printk: Fix return of braille_register_console()	2013-08-06 13:18:12 -07:00
braille.h	printk: move braille console support into separate braille.[ch] files	2013-07-31 14:41:03 -07:00
console_cmdline.h	console: Fix console name size mismatch	2015-03-07 03:39:55 +01:00
internal.h	printk/nmi: warn when some message has been lost in NMI context	2016-05-20 17:58:30 -07:00
nmi.c	printk/nmi: increase the size of NMI buffer and make it configurable	2016-05-20 17:58:30 -07:00
printk.c	printk/nmi: warn when some message has been lost in NMI context	2016-05-20 17:58:30 -07:00