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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-29 12:59:15 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-11-27 11:24:14 +0300 |
| commit | 1a2c5840acf9f657c9b580d4ee12a4c9db3429cb (patch) | |
| tree | 199917e7878e47e723b19788737496340ef6daef /drivers/s390 | |
| parent | 1a36a39e225d3558fb3776a3d3d7736cf1ec9f60 (diff) | |
| download | linux-1a2c5840acf9f657c9b580d4ee12a4c9db3429cb.tar.xz | |
s390/dump: cleanup CPU save area handling
Introduce save_area_alloc(), save_area_boot_cpu(), save_area_add_regs()
and save_area_add_vxrs to deal with storing the CPU state in case of a
system dump. Remove struct save_area and save_area_ext, and create a new
struct save_area as a local definition to arch/s390/kernel/crash_dump.c.
Copy each individual field from the hardware status area to the save area,
storing the minimum of required data.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/char/zcore.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index bed191a39c5b..5043ecfa1fbc 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -117,18 +117,17 @@ int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count) static int __init init_cpu_info(void) { - struct save_area_ext *sa_ext; + struct save_area *sa; /* get info for boot cpu from lowcore, stored in the HSA */ - - sa_ext = dump_save_areas.areas[0]; - if (!sa_ext) + sa = save_area_boot_cpu(); + if (!sa) return -ENOMEM; - if (memcpy_hsa_kernel(&sa_ext->sa, __LC_FPREGS_SAVE_AREA, - sizeof(struct save_area)) < 0) { + if (memcpy_hsa_kernel(hsa_buf, __LC_FPREGS_SAVE_AREA, 512) < 0) { TRACE("could not copy from HSA\n"); return -EIO; } + save_area_add_regs(sa, hsa_buf); /* vx registers are saved in smp.c */ return 0; } |