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2012-03-11[S390] kernel: Add z/VM LGR detectionMichael Holzheu1-0/+1
Currently the following mechanisms are available to move active Linux on System z instances between machines: * z/VM 6.2 SSI (Single System Image) * Suspend/resume For moving Linux instances in this patch the term LGR (Linux Guest Relocation) is used. Because such an operation is critical, it should be detectable from Linux. With this patch for both, a live system and a kernel dump, the information about LGRs is accessible. To identify a guest, stsi and stfle data is used. A new function lgr_info_log() compares the current data (lgr_info_cur) with the last recorded one (lgr_info_last). In case the two data sets differ, lgr_info_cur is logged to the "lgr" s390dbf. The following trigger points call lgr_info_log(): * panic * die * kdump * LGR timer * PSW restart * QDIO recovery * resume This patch also changes the s390dbf hex_ascii view. Now only printable ASCII characters are shown. Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-01-03switch debugfs to umode_tAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-09-11[S390] s390dbf: Add description for usage of "%s" in sprintf eventsMichael Holzheu1-1/+8
Using "%s" in sprintf event functions is dangerous. This patch adds a short description for this issue to the s390 debug feature documentation. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-06-22[S390] s390: remove DEBUG_MALLOCPekka Enberg1-9/+0
The kernel now has kmemleak and kmemtrace so there's no reason to keep this ugly s390 hack around. I am not sure how it's supposed to work on SMP anyway as it uses a global variable to temporarily store the return value of all kmalloc() calls: void *b; #define kmalloc(x...) (PRINT_INFO(" kmalloc %p\n",b=kmalloc(x)),b) Cc: <linux-s390@vger.kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-01[S390] move include/asm-s390 to arch/s390/include/asmMartin Schwidefsky1-0/+261
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>