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3f6813b9a5
linux_dsm_epyc7002/arch/s390
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Martin Schwidefsky 3f6813b9a5 s390/fpu: allocate 'struct fpu' with the task_struct 
Analog to git commit 0c8c0f03e3
"x86/fpu, sched: Dynamically allocate 'struct fpu'"
move the struct fpu to the end of the struct thread_struct,
set CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and add the
setup_task_size() function to calculate the correct size
fo the task struct.

For the performance_defconfig this increases the size of
struct task_struct from 7424 bytes to 7936 bytes (MACHINE_HAS_VX==1)
or 7552 bytes (MACHINE_HAS_VX==0). The dynamic allocation of the
struct fpu is removed. The slab cache uses an 8KB block for the
task struct in all cases, there is enough room for the struct fpu.
For MACHINE_HAS_VX==1 each task now needs 512 bytes less memory.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-21 09:51:15 +02:00
..
appldata
boot
configs s390/configs: update default configurations 2016-01-11 13:01:28 +01:00
crypto s390/crypto: cleanup and move the header with the cpacf definitions 2016-04-15 18:16:40 +02:00
hypfs wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
include s390/fpu: allocate 'struct fpu' with the task_struct 2016-04-21 09:51:15 +02:00
kernel s390/fpu: allocate 'struct fpu' with the task_struct 2016-04-21 09:51:15 +02:00
kvm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-03-16 10:47:45 -07:00
lib s390/spinlock: avoid yield to non existent cpu 2016-04-15 18:01:48 +02:00
mm s390: Clarify pagefault interrupt 2016-04-15 18:16:37 +02:00
net bpf: move clearing of A/X into classic to eBPF migration prologue 2015-12-18 16:04:51 -05:00
numa s390/numa: move numa_init_late() from device to arch_initcall 2016-01-26 12:45:24 +01:00
oprofile s390/oprofile: add z13/z13s model numbers 2016-02-24 12:18:10 +01:00
pci s390/pci: fmb enhancements 2016-04-15 18:16:40 +02:00
tools s390/facilities: add helper tool to generate facility lists 2015-12-18 14:59:20 +01:00
defconfig s390/configs: update default configurations 2016-01-11 13:01:28 +01:00
Kbuild
Kconfig s390/fpu: allocate 'struct fpu' with the task_struct 2016-04-21 09:51:15 +02:00
Kconfig.debug arch: consolidate CONFIG_STRICT_DEVM in lib/Kconfig.debug 2016-01-09 06:30:49 -08:00
Makefile s390/facilities: add helper tool to generate facility lists 2015-12-18 14:59:20 +01:00