This patch series enables p Series systems to capture oops and panic reports from the printk buffer into NVRAM, where they can be examined after reboot using the nvram command.
Patches 1-2 implement the basic feature, and patch 4 adds compression, so we can capture more of the printk buffer. Patches 3 and 5-6 add refinements. Patch 5 is not powerpc-specific, and I plan to pursue that independently on LKML. This series applies atop the little bug-fix series I posted two days ago -- "More ppc64 nvram code cleanup" http://lists.ozlabs.org/pipermail/linuxppc-dev/2010-November/087009.html -- which in turn applies atop Ben Herrenschmidt's Aug. 2 patch set -- "[RFC] Clean up ppc64 nvram code" http://lists.ozlabs.org/pipermail/linuxppc-dev/2010-August/084601.html My patches have been tested against 2.6.37-rc1. --- Jim Keniston (6): Shrink our zlib_deflate workspace from 268K to 24K Slim down zlib_deflate workspace when possible Add compression to fit more printk output into NVRAM Always capture start of oops report to NVRAM Capture oops/panic reports in ibm,oops-log partition Generalize code for OS partitions in NVRAM arch/powerpc/include/asm/nvram.h | 3 arch/powerpc/include/asm/rtas.h | 6 arch/powerpc/kernel/nvram_64.c | 31 ++ arch/powerpc/platforms/pseries/nvram.c | 470 ++++++++++++++++++++++++++++---- include/linux/zlib.h | 14 + lib/zlib_deflate/deflate.c | 33 ++ lib/zlib_deflate/deflate_syms.c | 1 lib/zlib_deflate/defutil.h | 17 + 8 files changed, 504 insertions(+), 71 deletions(-) -- Jim Keniston IBM Linux Technology Center Beaverton, OR _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
