Messages in this thread | | | From | David Laight <> | Subject | RE: [PATCH v2 5/5] printk/nmi: Increase the size of the temporary buffer | Date | Wed, 2 Dec 2015 16:20:41 +0000 |
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From: yalin wang > Sent: 30 November 2015 16:42 > > On Nov 27, 2015, at 19:09, Petr Mladek <pmladek@suse.com> wrote: > > > > 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.
You are wasting a lot of memory for something that is infrequently used. There ought to be some way of copying partial tracebacks into the main buffer.
David
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