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ff0ab8af9c
linux/arch/parisc/kernel
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Al Viro ff0ab8af9c parisc: optimizations in copy_thread() and friends 
* in user thread case the registers had been copied as part of task_struct
already; no need to do it in copy_thread().
* no need to store kernel stack pointer into regs->r21; we know its offset
anyway.
* no need to clobber r3 in sys_fork_wrapper and friends - r28 will do just
as well and *it* will be overwritten anyway.
* no need to mess with storing the return address for child - it should just
use syscall_exit.
* no need to bother with separate stack frame for sys_clone() - just branch
there and be done with that.
* no need to bother with wrapper_exit - we need it only on the child_return,
so let's just do it there.
* use the same ksp for kernel threads and userland ones, while we are at it,
and let ret_from_kernel_execve() go through the normal syscall_exit.  More
straightforward is better here...

[fixes from jejb folded]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-14 19:36:37 -04:00
..
.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
binfmt_elf32.c [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY 2008-10-16 15:40:05 +02:00
cache.c mm: replace vma prio_tree with an interval tree 2012-10-09 16:22:39 +09:00
drivers.c parisc: Add export.h to files needing EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:00 -04:00
entry.S parisc: optimizations in copy_thread() and friends 2012-10-14 19:36:37 -04:00
firmware.c Disintegrate asm/system.h for PA-RISC 2012-03-28 18:30:02 +01:00
ftrace.c sched_clock: Add local_clock() API and improve documentation 2010-06-09 10:34:49 +02:00
hardware.c [PARISC] add back Crestone Peak cpu 2008-03-15 19:12:19 -07:00
head.S [PARISC] only make executable areas executable 2011-04-15 12:55:18 -05:00
hpmc.S parisc: export length of os_hpmc vector 2009-01-05 19:18:27 +00:00
inventory.c Fix common misspellings 2011-03-31 11:26:23 -03:00
irq.c parisc: Use irq_to_desc() in show_interrupts() 2011-03-29 14:48:08 +02:00
Makefile parisc: Fix init_task fallout 2012-05-07 11:38:46 +02:00
module.c modules: make arch's use default loader hooks 2011-07-24 22:06:04 +09:30
pa7300lc.c
pacache.S [PARISC] fix crash in flush_icache_page_asm on PA1.1 2012-05-16 13:15:06 +01:00
parisc_ksyms.c [PARISC] update parisc to use generic strncpy_from_user() 2012-05-31 11:14:37 +01:00
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/PCI: factor out pcibios_setup() 2012-07-05 15:09:13 -06:00
pdc_chassis.c
pdc_cons.c TTY: use tty_port_link_device 2012-08-13 16:50:19 -07:00
perf_asm.S Revert "parisc: fix trivial section name warnings" 2008-06-13 10:49:45 -04:00
perf_images.h
perf.c parisc: remove big kernel lock 2010-10-16 22:43:08 +02:00
process.c parisc: optimizations in copy_thread() and friends 2012-10-14 19:36:37 -04:00
processor.c parisc: processor.c, fix bloated stack frame 2009-07-03 03:34:11 +00:00
ptrace.c Disintegrate asm/system.h for PA-RISC 2012-03-28 18:30:02 +01:00
real2.S parisc: move pdc_result to real2.S 2008-10-10 16:32:28 +00:00
setup.c parisc: Add export.h to files needing EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:00 -04:00
signal32.c most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set 2012-06-01 12:58:51 -04:00
signal32.h compat: move compat_siginfo_t definition to asm/compat.h 2012-10-06 03:05:16 +09:00
signal.c parisc: don't bother looping in do_signal() 2012-10-01 09:58:14 -04:00
smp.c parisc: Smp: remove call to ipi_call_lock()/ipi_call_unlock() 2012-06-05 17:27:12 +02:00
stacktrace.c parisc: add LATENCYTOP_SUPPORT and CONFIG_STACKTRACE_SUPPORT 2009-03-31 02:51:34 +00:00
sys32.h
sys_parisc32.c parisc: switch to generic sys_execve() 2012-10-14 19:36:37 -04:00
sys_parisc.c [PARISC] fix personality flag check in copy_thread() 2012-08-03 11:25:12 +01:00
syscall_table.S parisc: switch to generic sys_execve() 2012-10-14 19:36:37 -04:00
syscall.S parisc: decide whether to go to slow path (tracesys) based on thread flags 2012-10-01 09:58:14 -04:00
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 Disintegrate asm/system.h for PA-RISC 2012-03-28 18:30:02 +01:00
unaligned.c arch/parisc: Removing undead ifdef CONFIG_PA20 2010-10-21 21:13:29 -04:00
unwind.c parisc: unwind - optimise linked-list searches for modules 2010-10-21 21:12:19 -04:00
vmlinux.lds.S [PARISC] fix boot failure on 32-bit systems caused by branch stubs placed before .text 2012-05-25 10:52:17 +01:00