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042d27acb6
linux/arch/parisc/kernel
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Helge Deller 042d27acb6 parisc,metag: Do not hardcode maximum userspace stack size 
This patch affects only architectures where the stack grows upwards
(currently parisc and metag only). On those do not hardcode the maximum
initial stack size to 1GB for 32-bit processes, but make it configurable
via a config option.

The main problem with the hardcoded stack size is, that we have two
memory regions which grow upwards: stack and heap. To keep most of the
memory available for heap in a flexmap memory layout, it makes no sense
to hard allocate up to 1GB of the memory for stack which can't be used
as heap then.

This patch makes the stack size for 32-bit processes configurable and
uses 80MB as default value which has been in use during the last few
years on parisc and which hasn't showed any problems yet.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: linux-parisc@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Cc: John David Anglin <dave.anglin@bell.net>
2014-05-15 00:01:41 +01:00
..
.gitignore parisc: add arch/parisc/kernel/.gitignore 2008-10-10 16:32:28 +00:00
asm-offsets.c parisc: Use of align_frame provides stack frame. 2010-05-30 05:38:27 -04:00
audit.c parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
binfmt_elf32.c parisc: fix redefinition of SET_PERSONALITY 2013-03-02 20:15:28 +01:00
cache.c parisc: change value of SHMLBA from 0x00400000 to PAGE_SIZE 2014-04-13 15:00:53 +02:00
compat_audit.c parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
drivers.c parisc/PCI: Use dev_is_pci() to identify PCI devices 2013-12-11 16:53:12 -07:00
entry.S parisc: make interrupt and interruption stack allocation reentrant 2013-05-24 22:35:36 +02:00
firmware.c parisc: delete __cpuinit usage from all users 2013-07-14 19:36:51 -04:00
ftrace.c sched_clock: Add local_clock() API and improve documentation 2010-06-09 10:34:49 +02:00
hardware.c parisc: add some more machine names to hardware database 2013-11-30 21:00:14 +01:00
head.S parisc: fix kernel memory layout in vmlinux.ld.S 2013-11-30 22:09:21 +01:00
hpmc.S parisc: fix partly 16/64k PAGE_SIZE boot 2013-05-06 23:08:32 +02:00
inventory.c parisc: Fix interrupt routing for C8000 serial ports 2013-07-31 23:42:32 +02:00
irq.c parisc: Validate online cpus in irq_set_affinity() callbacks 2014-03-12 13:07:41 +01:00
Makefile parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
module.c mm/arch: use NUMA_NO_NODE 2013-11-13 12:09:05 +09:00
pa7300lc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pacache.S parisc: Use unshadowed index register for flush instructions in flush_dcache_page_asm and flush_icache_page_asm 2013-06-18 20:29:10 +02:00
parisc_ksyms.c parisc: Provide __ucmpdi2 to resolve undefined references in 32 bit builds. 2013-04-25 22:36:15 +02:00
pci-dma.c parisc: Add export.h to files needing EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:00 -04:00
pci.c parisc: provide pci_mmap_page_range() for parisc 2013-06-18 20:29:08 +02:00
pdc_chassis.c parisc: single_open() leaks 2013-05-05 00:10:41 -04:00
pdc_cons.c TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
perf_asm.S Revert "parisc: fix trivial section name warnings" 2008-06-13 10:49:45 -04:00
perf_images.h [PARISC] Use kzalloc and other janitor-style cleanups 2006-01-22 20:26:31 -05:00
perf.c parisc: remove big kernel lock 2010-10-16 22:43:08 +02:00
process.c parisc: add flexible mmap memory layout support 2014-02-02 21:00:13 +01:00
processor.c parisc: delete __cpuinit usage from all users 2013-07-14 19:36:51 -04:00
ptrace.c parisc: add kernel audit feature 2013-11-07 22:27:20 +01:00
real2.S parisc: move pdc_result to real2.S 2008-10-10 16:32:28 +00:00
setup.c parisc: correctly display number of active CPUs 2013-11-07 22:29:05 +01:00
signal32.c constify copy_siginfo_to_user{,32}() 2013-11-09 00:16:29 -05:00
signal32.h constify copy_siginfo_to_user{,32}() 2013-11-09 00:16:29 -05:00
signal.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-09-06 09:36:28 -07:00
smp.c parisc: do not count IPI calls twice 2013-11-07 22:28:54 +01:00
stacktrace.c parisc: add LATENCYTOP_SUPPORT and CONFIG_STACKTRACE_SUPPORT 2009-03-31 02:51:34 +00:00
sys_parisc32.c parisc: Remove arch/parisc/kernel/sys32.h header 2013-07-31 23:42:21 +02:00
sys_parisc.c parisc,metag: Do not hardcode maximum userspace stack size 2014-05-15 00:01:41 +01:00
syscall_table.S parisc: fix epoll_pwait syscall on compat kernel 2014-04-13 15:07:57 +02:00
syscall.S parisc: provide macro to create exception table entries 2013-11-07 22:25:33 +01:00
time.c parisc: move definition of PAGE0 to asm/page.h 2012-05-10 15:12:08 -07:00
topology.c parisc: Replace NR_CPUS in parisc code 2009-01-05 19:09:02 +00:00
traps.c parisc: fix interruption handler to respect pagefault_disable() 2013-10-13 17:45:20 +02:00
unaligned.c parisc: show number of FPE and unaligned access handler calls in /proc/interrupts 2013-05-24 22:35:26 +02:00
unwind.c parisc: use kernel_text_address() in unwind functions 2013-11-30 22:08:54 +01:00
vmlinux.lds.S parisc: fix kernel memory layout in vmlinux.ld.S 2013-11-30 22:09:21 +01:00