提交 · dedeb0029b9c83420fc1337d4ee53daa7b2a0ad4 · openeuler / raspberrypi-kernel

08 11月, 2005 26 次提交

[SPARC64] mm: context switch ptlock · dedeb002

由 Hugh Dickins 提交于 11月 07, 2005

sparc64 is unique among architectures in taking the page_table_lock in
its context switch (well, cris does too, but erroneously, and it's not
yet SMP anyway).

This seems to be a private affair between switch_mm and activate_mm,
using page_table_lock as a per-mm lock, without any relation to its uses
elsewhere. That's fine, but comment it as such; and unlock sooner in
switch_mm, more like in activate_mm (preemption is disabled here).

There is a block of "if (0)"ed code in smp_flush_tlb_pending which would
have liked to rely on the page_table_lock, in switch_mm and elsewhere;
but its comment explains how dup_mmap's flush_tlb_mm defeated it. And
though that could have been changed at any time over the past few years,
now the chance vanishes as we push the page_table_lock downwards, and
perhaps split it per page table page. Just delete that block of code.

Which leaves the mysterious spin_unlock_wait(&oldmm->page_table_lock)
in kernel/fork.c copy_mm. Textual analysis (supported by Nick Piggin)
suggests that the comment was written by DaveM, and that it relates to
the defeated approach in the sparc64 smp_flush_tlb_pending. Just delete
this block too.
Signed-off-by: NHugh Dickins <hugh@veritas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

dedeb002

[SPARC64] mm: don't re-evaluate *ptep · b8ae4865

由 Hugh Dickins 提交于 11月 07, 2005

sparc64 prom_callback and new_setup_frame32 each operates on a user page
table without holding lock, and no doubt they've good reason.  But I'd
feel more confident if they were to do a "pte = *ptep" and then operate
on pte, rather than re-evaluating *ptep.
Signed-off-by: NHugh Dickins <hugh@veritas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

b8ae4865

[SPARC]: Add sun4m LED driver. · ee1858d3

由 Lars Kotthoff 提交于 11月 07, 2005

This is a forward port of a 2.4.x sun4m LED driver written by Lars
Kotthoff.
Signed-off-by: NLars Kotthoff <metalhead@metalhead.ws>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ee1858d3

[ARM] Allow SMP if Realview MPcore is selected · f6db449c

由 Russell King 提交于 11月 07, 2005

This patch puts into place the final piece of the puzzle for SMP
support on ARM.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

f6db449c

[ARM] 3121/1: unconditionally use XCB=101 on ixp2000 · 5391473f

由 Lennert Buytenhek 提交于 11月 07, 2005

Patch from Lennert Buytenhek

Since we have to use XCB=101 instead of XCB=000 on the ixp2400 to
prevent it from regularly falling over, and since we have to deal with
manual write buffer flushing because of that, we might as well use
XCB=101 on all ixp2000 platforms since it's faster than XCB=000.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

5391473f

[ARM] 3118/1: fix and reenable nwfpe extended precision emulation for big-endian · bedf142b

由 Lennert Buytenhek 提交于 11月 07, 2005

Patch from Lennert Buytenhek

nwfpe extended precision emulation used to be broken on big-endian
and was therefore disabled.  This patch fixes nwfpe so that it copies
extended precision floats to/from userspace in the proper word order
(similar to patch #2046, see the description of that patch for an
explanation) and reenables the Kconfig option.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

bedf142b

[ARM] 3117/1: nwfpe kernel memory info leak · 06c03cac

由 Lennert Buytenhek 提交于 11月 07, 2005

Patch from Lennert Buytenhek

The routine that nwfpe uses for converting floats/doubles to
extended precision fails to zero two bytes of kernel stack.  This
is not immediately obvious, as the floatx80 structure has 16 bits
of implicit padding (by design.)  These two bytes are copied to
userspace when an stfe is emulated, causing a possible info leak.

Make the padding explicit and zero it out in the relevant places.
Signed-off-by: NLennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

06c03cac

[ARM SMP] Add Realview MPcore SMP support · 862184fe

由 Russell King 提交于 11月 07, 2005

Add SMP support for the MPcore tile fitted to the Realview ARM
platform.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

862184fe

[ARM] Add support for Realview with MPcore tile · 9b1283be

由 Russell King 提交于 11月 07, 2005

Add uniprocessor support for Realview platform fitted with the
MPcore (SMP) tile.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

9b1283be

Fix return type of setup_frame variants · 16cd3951

由 Atsushi Nemoto 提交于 11月 05, 2005

    
Since 2.6.13-rc1 setup_frame and its variants return int.  But some bits
were missed in the conversion.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

16cd3951

R
IRIX: Use schedule_timeout_interruptible. · 0d959c26
由 Ralf Baechle 提交于 11月 05, 2005
```
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
```
0d959c26

Use rtc_lock to protect RTC operations · 53c2df2f

由 Atsushi Nemoto 提交于 11月 03, 2005

    
Many RTC routines were not protected against each other, so there are
potential races, for example, ntp-update against /dev/rtc.  This patch
fixes them using rtc_lock.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

53c2df2f

R

Add .gitignore files for MIPS. · 15b96a47
由 Ralf Baechle 提交于 11月 07, 2005

15b96a47

VPE loader janitoring · 307bd284

由 Ralf Baechle 提交于 10月 31, 2005

    
 o Switch to dynamic major
 o Remove duplicate SHN_MIPS_SCOMMON definition
 o Coding style: remove typedefs.
 o Coding style: reorder to avoid the need for forward declarations
 o Use kzalloc.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

307bd284

R
PNX8550 uses a MIPS32-like processor core, not R4xx0. · b8c2a77c
由 Ralf Baechle 提交于 10月 31, 2005
```
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
```
b8c2a77c

Turn rtlx upside down. · afc4841d

由 Ralf Baechle 提交于 10月 31, 2005

    
 o Coding style
 o Race condition on open
 o Switch to dynamic major
 o Header file cleanup
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

afc4841d

[PATCH] m68knommu: move some platform irq support out of irq.h · 2ed5e6d0