> -----Ursprüngliche Nachricht----- > Von: Felipe Balbi [mailto:[email protected]] > Gesendet: Dienstag, 18. September 2012 10:50 > An: Maximilian Schwerin > Cc: [email protected] > Betreff: Re: How to disable message "Uncompressing linux..." > on kernel start? (PGP: Plain, Unable to verify signature) > > Hi, > > On Tue, Sep 18, 2012 at 08:39:53AM +0200, Maximilian Schwerin wrote: > > I have been convinced that my patch for disabling the message > > "Uncompressing linux..." on kernel start was not all that > good an idea. > > As the problem still remains an issue for me and I'd like > to find a fix > > for everyone I'd like to ask for pointers where or how to fix this. > > > > To sum up my problem: I'm using the primary serial port on > an OMAP3 as a > > debug console for development. In production we set the > u-boot silent > > option which disables all kernel logging to this serial > port. The only > > kernel message that remains is "Uncompressing linux..." at the very > > beginning. As we connect an external device via this port > in production > > environments this is not acceptable. > > I don't think that would be an acceptable patch upstream, but you can > hold a local patch to remove that print from your own kernel. > I'd still > try to get the production environment to ignore that "Uncompressing > Linux..." string, otherwise you will have to keep patching the kernel > for every release you try to use. Anyway, this should do: > > diff --git a/arch/arm/boot/compressed/misc.c > b/arch/arm/boot/compressed/misc.c > index 8e2a8fc..e7c8ff3 100644 > --- a/arch/arm/boot/compressed/misc.c > +++ b/arch/arm/boot/compressed/misc.c > @@ -144,11 +144,8 @@ decompress_kernel(unsigned long > output_start, unsigned long free_mem_ptr_p, > > arch_decomp_setup(); > > - putstr("Uncompressing Linux..."); > ret = do_decompress(input_data, input_data_end - input_data, > output_data, error); > if (ret) > error("decompressor returned an error"); > - else > - putstr(" done, booting the kernel.\n"); > } > > -- > balbi >
This is more or less what I proposed in my patch (see http://www.spinics.net/lists/arm-kernel/msg195787.html) and what I have been doing up to now. Cheers, m.
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