Commit Graph

462 Commits

Author SHA1 Message Date
Tony Luck
e1ed81ab7a [IA64] print "siblings" before {physical,core,thread} id
Rohit and Suresh changed their mind about the order to print things
in /proc/cpuinfo, but didn't include the change in the version of
the patch they sent to me.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:27:12 -07:00
Kenji Kaneshige
24eeb568ae [IA64] vector sharing (Large I/O system support)
Current ia64 linux cannot handle greater than 184 interrupt sources
because of the lack of vectors. The following patch enables ia64 linux
to handle greater than 184 interrupt sources by allowing the same
vector number to be shared by multiple IOSAPIC's RTEs. The design of
this patch is besed on "Intel(R) Itanium(R) Processor Family Interrupt
Architecture Guide".

Even if you don't have a large I/O system, you can see the behavior of
vector sharing by changing IOSAPIC_LAST_DEVICE_VECTOR to fewer value.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:26:23 -07:00
Suresh Siddha
e927ecb05e [IA64] multi-core/multi-thread identification
Version 3 - rediffed to apply on top of Ashok's hotplug cpu
patch.  /proc/cpuinfo output in step with x86.

This is an updated MC/MT identification patch based on the 
previous discussions on list. 

Add the Multi-core and Multi-threading detection for IPF.
  - Add new core and threading related fields in /proc/cpuinfo.
		Physical id
		Core id
		Thread id
		Siblings
  - setup the cpu_core_map and cpu_sibling_map appropriately
  - Handles Hot plug CPU
 
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Rohit Seth <rohit.seth@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:25:06 -07:00
Keith Owens
6118ec847e [IA64] __copy_user breaks on unaligned src
memcpy_mck.S::__copy_user breaks in the prefetch code under these conditions :-

* src is unaligned and
* dst is near the end of a page and
* the page after dst is unmapped.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:23:47 -07:00
Tony Luck
f0a8d3c9ec [IA64] Need to handle lfetch in "no_context" case.
Thanks to Mark for tracking down this one.  Users of __copy_from_user_inatomic()
will be sad if we don't handle lfetch faults for the "no_context" case.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:22:44 -07:00
Mark Goodwin
0985ea8f2d [IA64-SGI] Altix SN add support for slots in geoid_t locator
This patch against ia64-test-2.6.12 is needed for forthcoming
Altix chipsets. It renames geoid_any_t to geoid_common_t and
splits the 8bit 'slab' field into two 4bit fields for 'slab'
and 'slot'. Similar changes in the Altix SAL will retain backward
compatibility for old kernels.

Signed-off-by: Mark Goodwin <markgw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:21:54 -07:00
David Mosberger-Tang
a37d98f6a9 [IA64] fix syscall-optimization goof
Sadly, I goofed in this syscall-tuning patch:

ChangeSet 1.1966.1.40 2005/01/22 13:31:05 davidm@hpl.hp.com
  [IA64] Improve ia64_leave_syscall() for McKinley-type cores.

  Optimize ia64_leave_syscall() a bit better for McKinley-type cores.
  The patch looks big, but that's mostly due to renaming r16/r17 to r2/r3.
  Good for a 13 cycle improvement.

The problem is that the size of the physical stacked registers was
loaded into the wrong register (r3 instead of r17).  Since r17 by
coincidence always had the value 1, this had the effect of turning
rse_clear_invalid into a no-op.  That poses the risk of leaking kernel
state back to user-land and is hence not acceptable.

The fix below is simple, but unfortunately it costs us about 28 cycles
in syscall overhead. ;-(

Unfortunately, there isn't much we can do about that since those
registers have to be cleared one way or another.

	--david

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:20:38 -07:00
Russ Anderson
93a07d0a0e [IA64-SGI] Shub2 BTE support - BTE recovery code
patch 2:
	Shub2 BTE recovery code will be implemented in SAL.  
	Define the SAL interface.
	Modify bte_error to call SAL for shub2.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:19:52 -07:00
Russ Anderson
95ff439a51 [IA64-SGI] Add new MMR definitions/Modify BTE initialiation&copy.
patch 1:
	Add new MMR definitions.
	Modify BTE initialiation.
	Modify BTE copy.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:19:11 -07:00
Mark Maule
4628d7cada [IA64-SGI] disable TIOCA GART TLB prefetching
Patch to disable SGI TIOCA GART TLB prefetching due to hw bug.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:18:02 -07:00
Tony Luck
e96c9b4779 [IA64] MAX_PGT_FREES_PER_PASS must be 'L' to avoid warning
'min' is very picky about types of arguments, make it happy

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:16:59 -07:00
Tony Luck
c411cb5658 [IA64] fix: warning: `ql_size' might be used uninitialized
Oops.  Should have caught this before I checked it in.

Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:16:16 -07:00
Alex Williamson
5f6602a101 [IA64] sba_iommu bug fixes
This fixes a couple of bugs in the zx1/sx1000 sba_iommu.  These are
all pretty low likelihood of hitting.  The first problem is a simple off
by one, deep in the sba_alloc_range() error path.  Surrounding that was
a lock ordering problem that could have potentially deadlocked with the
order the locks are grabbed in sba_unmap_single().  I moved the resource
locking into sba_search_bitmap() to prevent this.  Finally, there's a
potential race between unmapping pdir entries and marking incoming DMA
pages clean.  If you see any oddities, please let me know, but I've
tested it pretty thoroughly here.  Tony, please apply.  Thanks,

BTW, many of the options in this driver not on by default are becoming
more and more broken.  I'll be working on some patches to clean them
out, but I wanted to get this bug fix out first.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:14:36 -07:00
Robin Holt
fde740e4dd [IA64] Percpu quicklist for combined allocator for pgd/pmd/pte.
This patch introduces using the quicklists for pgd, pmd, and pte levels
by combining the alloc and free functions into a common set of routines.
This greatly simplifies the reading of this header file.

This patch is simple but necessary for large numa configurations.
It simply ensures that only pages from the local node are added to a
cpus quicklist.  This prevents the trapping of pages on a remote nodes
quicklist by starting a process, touching a large number of pages to
fill pmd and pte entries, migrating to another node, and then unmapping
or exiting.  With those conditions, the pages get trapped and if the
machine has more than 100 nodes of the same size, the calculation of
the pgtable high water mark will be larger than any single node so page
table cache flushing will never occur.

I ran lmbench lat_proc fork and lat_proc exec on a zx1 with and without
this patch and did not notice any change.

On an sn2 machine, there was a slight improvement which is possibly
due to pages from other nodes trapped on the test node before starting
the run.  I did not investigate further.

This patch shrinks the quicklist based upon free memory on the node
instead of the high/low water marks.  I have written it to enable
preemption periodically and recalculate the amount to shrink every time
we have freed enough pages that the quicklist size should have grown.
I rescan the nodes zones each pass because other processess may be
draining node memory at the same time as we are adding.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:13:16 -07:00
Bruce Losure
ff3eb55ed9 [IA64-SGI]
Missed the "bk new" for this file in the last commit.

Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:12:02 -07:00
Aaron J Young
c1298c5c7e [IA64-SGI] Altix: enable poweroff
This patch adds the necessary "hook" to allow SGI/SN
machines to perform a system power off upon a 
'init 0', 'halt -p', 'poweroff' or 'shutdown -h'.

The "hook" is to set the pm_power_off callback
to ia64_sn_power_down(). pm_power_off is checked
in machine_power_off()/do_poweroff() and, if set, is executed. 
ia64_sn_power_down() is a function already present (but not 
used currently) in the sn kernel.
ia64_sn_power_down() makes a SAL call to execute the
power off.

Signed-off-by: Aaron J Young <ayoung@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:11:14 -07:00
Bruce Losure
e1e19747ec [IA64-SGI] Bus driver for the CX port of SGI's TIO chip.
This patch is to provide CX port infrastructure for SGI TIO-based
h/w.   Also a 'core services' driver for SGI FPGA-based h/w.
                                                                                
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:09:41 -07:00
Stephane Eranian
4944930ab7 [IA64] perfmon: make pfm_sysctl a global, and other cleanup
- make pfm_sysctl a global such that it is possible
  to enable/disable debug printk in sampling formats
  using PFM_DEBUG.

- remove unused pfm_debug_var variable

- fix a bug in pfm_handle_work where an BUG_ON() could
  be triggered. There is a path where pfm_handle_work()
  can be called with interrupts enabled, i.e., when
  TIF_NEED_RESCHED is set. The fix correct the masking
  and unmasking of interrupts in pfm_handle_work() such
  that we restore the interrupt mask as it was upon entry.

signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:08:30 -07:00
Colin Ngam
658b32cad9 [IA64-SGI] support variable length nasids in shub2
This patch enables our TIO IO chipset to support variable length nasids in 
Shub2 chipset.

Signed-off-by: Colin Ngam <cngam@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:07:00 -07:00
Colin Ngam
be539c73b5 [IA64-SGI] Shub2 provides an addition of 2 External Interrupt events.
Signed-off-by: Colin Ngam <cngam@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:06:28 -07:00
Mark Goodwin
f1e2a1c8a1 [IA64-SGI] Altix SN topology fix potential infinite loop
Fix infinite loop if sn_hwperf_location_to_bpos() fails.

Signed-off-by: Mark Goodwin <markgw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:05:08 -07:00
Mark Goodwin
4a5c13c7eb [IA64-SGI] Altix SN topology support for new chipsets and pci topology
please accept this patch to the Altix SN platform topology export
interface to support new chipsets and to export PCI topology.

This follows on top of Jack Steiner's patch dated March 1st
("New chipset support for SN platform").

Signed-off-by: Mark Goodwin <markgw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:04:22 -07:00
David Mosberger-Tang
30325d1771 [IA64] speed up syscall path a bit more
Recently I noticed that clearing ar.ssd/ar.csd right before srlz.d is
causing significant stalling in the syscall path.  The patch below
fixes that by moving the register-writes after srlz.d.  On a Madison,
this drops break-based getpid() from 241 to 226 cycles (-15 cycles).

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 13:03:16 -07:00
Keith Owens
e8d1cb2f28 [IA64] Tighten up unw_unwind_to_user check
Detect user space by the unwind frame with predicate PRED_USER_STACK
set, instead of a user space IP.  Tighten up the last ditch check for
running off the top of the kernel stack.

Based on a suggestion by David Mosberger, reworked to fit the current
tree.  This survives my stress test which used to break 2.6.9 kernels.
Unlike 2.6.11, the stress test now unwinds to the correct point, so
gdb can get the user space registers.

Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 11:45:26 -07:00
David Mosberger-Tang
8297511530 [IA64] add missing cpu_relax() in ITC syncing code
Call cpu_relax() in busy-waiting loops of the ITC-syncing code.

Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 11:44:02 -07:00
Jack Steiner
bf1cf98fa9 [IA64-SGI] Change SAL call request code for SN systems
Change the value of the SAL call number for a new SAL request. The
initial implementation in the PROM did not match what the OS expected. 
Since the OS can run on PROMs that do not implement the new call, 
changing the call number avoids the issue. New PROMs will implement
the new call number. (This avoids problems with the 4.05 PROM).

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 11:42:39 -07:00
Mark Maule
9c90bdde77 [IA64-SGI] altix: tioca chip driver (agp)
Provide a driver for the altix TIOCA AGP chipset.  An agpgart backend will
be provided as a separate patch.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 11:35:54 -07:00
Mark Maule
9b08ebd167 [IA64-SGI] sn2-move-pci-headers.patch
Move a couple of headers out of arch/ia64/sn/include/pci and into
include/asm-ia64/sn.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 11:32:16 -07:00
Mark Maule
e955d82543 [IA64-SGI] sn2-pci-dma-abstraction.patch
Provide an abstraction of the altix pci dma runtime layer so that multiple
pci-based bridges can be supported.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-04-25 11:26:03 -07:00
Adrian Bunk
25ee7e3832 [PATCH] fs/aio.c: make some code static
This patch makes some needlessly global code static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 08:18:14 -07:00
Al Viro
056de2fa12 [PATCH] ppc user annotations: debug_setconetext(2)
3rd argument of sys_debug_setcontext() is also a userland pointer.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:59 -07:00
Al Viro
dc074a8a32 [PATCH] ppc iomem annotations: mv643xx_eth
void * __iomem replaced with intended void __iomem *.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro
91de1fff2d [PATCH] ppc sparse annotations: emulate_string_inst()
replaced declaration of EA from u32 to unsigned long - this beast is
used only to cast it to (userland) pointer and proper integer type for
that is unsigned long. 

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro
d01daf72f0 [PATCH] ppc iomem annotations: pmac_low_i2c
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro
ba724a373a [PATCH] ppc iomem annotations: ebony_setup_pcix()
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:58 -07:00
Al Viro
92a11f9e7c [PATCH] ppc iomem annotations: ->io_base_virt
* ->io_base_virt in struct pci_controller is iomem pointer.  Marked as such.
  Most of the places that used it are already annotated to expect iomem.
* places that did gratitious (and wrong) casts a-la
	isa_io_base = (unsigned long)ioremap(...);
	hose->io_base_virt = (void *)isa_io_base;
  turned into
	hose->io_base_virt = ioremap(...);
	isa_io_base = (unsigned long)hose->io_base_virt;
* pci_bus_io_base() annotated as returning iomem pointer.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:57 -07:00
Al Viro
9090e001f2 [PATCH] ppc user annotations: sigcontext
sigcontext.regs is a userland pointer

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-25 07:55:57 -07:00
Linus Torvalds
cf025109e8 Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6.git 2005-04-25 07:42:22 -07:00
David S. Miller
9a59c1860d [SPARC64]: Fix SMP build.
Kill build failures in the SMP+!PREEMPT case introduced
by Al Viro's spinlock.h changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 21:04:02 -07:00
Tom 'spot' Callaway
24dc6ead53 [SPARC]: dump_stack for sparc
Bob Breuer wrote a patch to add dump_stack for sparc. Supposedly, this
was applied, but it doesn't exist in 2.6.11.

This is the same patch, rediffed against 2.6.11.

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:46:49 -07:00
Tom 'spot' Callaway
205a7edad9 [SPARC]: Fix mxcc warning
Peter Jones uncovered this one while we were debugging the framebuffer
issues. There are some references to -1 in the mxcc asm code, which
should be 0xffffffff.

This patch gets rid of the -1s.

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:46:00 -07:00
Tom 'spot' Callaway
962bd5604b [SPARC]: More sparc32 ksyms cleanups
The sparc32 ksyms is missing a few more symbols, these are primarily
related to SMP, and will be needed as SMP gets beaten back into
functionality.

Specifically, add __cpu_data (PER_CPU), cpu_online_map, and
phys_cpu_present_map.

This patch assumes that the earlier "linux-2.6.11-sparc-fixksyms.patch"
is applied, otherwise, it will apply with fuzz.

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:45:06 -07:00
Bob Breuer
f1dee7ea25 [SPARC]: Enable sun logo on sparc32
This enables the sun linux logo to be selected on sparc32.

Signed-off-by: Bob Breuer <breuerr@mc.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:42:45 -07:00
Tom 'spot' Callaway
77a6a22f69 [SPARC]: Missing sparc32 ksyms
This patch adds some missing sparc32 ksyms that are needed.
Specifically, ___rw_read_enter, ___rw_read_exit, ___rw_write_enter, and
sys_close.

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:41:45 -07:00
Tom 'spot' Callaway
6ee7c15294 [SPARC]: TCX Framebuffer fixes
Using the same logic as the other framebuffer fixes committed in 2.6.11,
this is a set of fixes to make TCX functional on the console again. Adds
the tcx_pan_display function, sets the
all->info.var.{red,green,blue}.length values to 8, and runs fb_set_cmap.
Also looks for the correct SUNW,tcx prom value.

This patch just slipped through the cracks.

Originally by: Georg Chini <georg.chini@triaton-webhosting.com>

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:39:15 -07:00
Tom 'spot' Callaway
a271c241a6 [SPARC]: Stop-A printk cleanup
This patch is incredibly trivial, but it does resolve some of the user
confusion as to what "L1-A" actually is.

Clarify printk message to refer to Stop-A (L1-A).

Gentoo has a virtually identical patch in their kernel sources.

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:38:02 -07:00
Tom 'spot' Callaway
10158286e7 [SPARC]: module version cleanups
Minor cleanups for sparc specific drivers (sunbmac, sunqe, sunlance,
sunhme, esp) so that they have a full module version definition that is
consistent with other upstream drivers.

Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:35:20 -07:00
Arnaldo Carvalho de Melo
edec231a8a [IPV6]: export inet6_sock_nr
Please apply, SCTP/DCCP needs this when INET_REFCNT_DEBUG
is set.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:22:28 -07:00
Thomas Graf
c5c13fafd6 [PKT_SCHED]: improve hashing performance of cls_fw
Calculate hashtable size to fit into a page instead of a hardcoded
256 buckets hash table. Results in a 1024 buckets hashtable on
most systems.

Replace old naive extract-8-lsb-bits algorithm with a better
algorithm xor'ing 3 or 4 bit fields at the size of the hashtable
array index in order to improve distribution if the majority of
the lower bits are unused while keeping zero collision behaviour
for the most common use case.

Thanks to Wang Jian <lark@linux.net.cn> for bringing this issue
to attention and to Eran Mann <emann@mrv.com> for the initial
idea for this new algorithm.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:19:54 -07:00
Herbert Xu
0d3d077cd4 [SELINUX]: Fix ipv6_skip_exthdr() invocation causing OOPS.
The SELinux hooks invoke ipv6_skip_exthdr() with an incorrect
length final argument.  However, the length argument turns out
to be superfluous.

I was just reading ipv6_skip_exthdr and it occured to me that we can
get rid of len altogether.  The only place where len is used is to
check whether the skb has two bytes for ipv6_opt_hdr.  This check
is done by skb_header_pointer/skb_copy_bits anyway.

Now it might appear that we've made the code slower by deferring
the check to skb_copy_bits.  However, this check should not trigger
in the common case so this is OK.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-24 20:16:19 -07:00