Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The Au1000 ethernet driver references plenty of CONFIG_* symbols.
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

For the four versions of hardware that we (currently) support microcode
download on, the default configuration of our receive interrupt mitigation
microcode was too aggressive, and caused unnecessary delays when pinging,
and low(er) throughput on single connection latency sensitive performance
tests.

This code adds microcode support, and sets the defaults to more reasonable
settings. It also explains the functionality in the code in more detail.
Compile and load tested, shows expected behavior for slight delay of ping
packets (1-2ms) when ucode is loaded, and decent interrupt moderation for
small packets, while maintaining good throughput.
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

The smc91x driver relies upon register bank 2 being selected whenever
the interrupt handler is called.  This isn't always so, especially if
we have a link change event during PHY configuration.

This results in register bank 0 being selected when the interrupt
handler is called, causing the wrong registers to be read for the
IRQ mask and status.  In turn, this causes us to spin with a
permanently asserted IRQ.

The patch ensures that smc_phy_configure always exits with register
bank 2 selected.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Not only SMC_ACK_INT(IM_TX_EMPTY_INT) in in smc_hardware_send_pkt)
appears to be unnecessary (tested with an SMC91C94 and SMC91C111), but
it seems to trigger spurious interrupts on some machines as well.
Removed.

While at it, let's log any remaining spurious interrupts if any (and
clean usage of the max IRQ loop count value).
Signed-off-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>

Add the missing NULL argument to the class_device_create calls.
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

With the new powerpc architecture we don't seem to be able to disable huge
pages anymore.

    mm/built-in.o(.toc1+0xae0): undefined reference to `HPAGE_SHIFT'
    make: *** [.tmp_vmlinux1] Error 1

We seem to need to define HPAGE_SHIFT to something when HUGETLB_PAGE isn't
defined.  This patch defines it to PAGE_SHIFT when we have no support.
Signed-off-by: NAndy Whitcroft <apw@shadowen.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

[PATCH] md: fix is_mddev_idle calculation now that disk/sector accounting happens when request completes

md needs to monitor the rate of requests to its devices when doing
resync/recovery so that it can back-off when there is non-resync IO.  It
does this by comparing resync IO, which it counts, with total IO which is
taken from disk_stats.

disk_stats were recently changed to account sectors when a request
completes instead of when it is queued.  This upsets md's calculations.

We could do the sync_io accounting at the end of requests too, but that has
problems.  If an underlying device is an md array, the accounting will
still be done when the request is submitted.  This could be changed for
some raid levels, but it cannot be changed for raid0 or linear without
substantial code changes.

So instead, we increase the error that is_mddev_idle allows, up to the
maximum amount of resync IO that can be in flight at any time.  The
calculation is current fragile as each personality as different limits for
in-flight resync.  This should be fixed up.

For now, this simple patch fixes the problem.

Increasing the error margin decreases the sensitivity to non-resync IO.  To
partially compensate for this, the time to wait when non-resync IO is
detected is increased so that less steady IO is required to keep the resync
at bay.
Signed-off-by: NNeil Brown <neilb@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Some filesystems go oops.
Signed-off-by: NNeil Brown <neilb@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The driver dependencies on PCI have been removed.  This patch clears that
up in the Kconfig file
Signed-off-by: NKylene Hall <kjhall@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Use ioread8 and iowrite8 as suggested.
Signed-off-by: NKylene Hall <kjhall@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Add the necessary flush_schedule_work calls when canceling the timer.
Signed-off-by: NKylene Hall <kjhall@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This adds the FCC_PSMR_RMII defenition, which is used in fs_enet to enable
RMII mode.
Signed-off-by: NVitaly Bordug <vbordug@ru.mvista.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

On IPMI systems with BT interfaces, we don't start the kernel thread, so
smi_info->thread is NULL.  Test for NULL when stopping the thread, because
kthread_stop() doesn't, and an oops ensues otherwise.
Signed-off-by: NMatt Domsch <Matt_Domsch@dell.com>
Acked-by: NCorey Minyard <minyard@acm.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

2.6.14 has this exported, and reiser4 (at least) uses it.  Put things back
the way they were.
Signed-off-by: NVladimir V. Saveliev <vs@namesys.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

One issue with the RCU torture test is that the current error flagging can
be lost in dmesg.  This patch adds a "SUCCESS"/"FAILURE" string to the line
that flags the end of the test, where it can easily be seen with "dmesg |
tail" at the end of the test.  Also adds tests of architecture-specific
memory barriers -- or, more likely, of the RCU torture test itself.

Cc: <vatsa@in.ibm.com>
Signed-off-by: N"Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix copy-paste bug in ohci-ppc-soc.c(ohci_hcd_ppc_soc_drv_remove)
Signed-off-by: NAndrey Volkov <avolkov@varma-el.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Properly clear the memory, and set "pr->flags.power" only if a C2 or
deeper state is valid (to make the code match both the comment and
previous behaviour).

This fixes a boot-time lockup reported by Maneesh Soni when using
"maxcpus=1".
Acked-by: NManeesh Soni <maneesh@in.ibm.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The code Ben H added needs <linux/pci.h> for things like pci_dev, etc.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

make defconfig will now use arch/powerpc/configs/ppc64_defconfig
if running on a ppc64 system.  I need to add an
arch/powerpc/configs/ppc_defconfig sometime.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NPaul Mackerras <paulus@samba.org>

This makes 32-bit CHRP systems use the RTAS time-of-day routines if
available.  It fixes a bug in the RTAS time-of-day routines where they
were storing a 64-bit timebase value in an unsigned long by making
those variables u64.  Also, the direct-access time-of-day routines
had the wrong convention for the month and year in the struct rtc_time.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

pseries_dedicated_idle() was using __get_tb which used to be defined
in asm/delay.h.  Change it to use get_tb from asm/time.h, which is
in fact exactly the same thing.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This also deletes the now-unused Makefiles under arch/ppc64.

Both of the files moved over could use some merging, but for now I
have moved them as-is and arranged for them to be used only in 64-bit
kernels.  For 32-bit kernels we still use arch/ppc/kernel/idle.c and
drivers/char/generic_nvram.c as before.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The config option SPAN_OTHER_NODES was created so that we could
make pSeries numa layouts work within the DISCONTIG memory model.
Now that DISCONTIG has been replaced by SPARSEMEM, we can eliminate
this option.

I'll be sending a separate patch to Andrew to remove the arch
independent code as pSeries was the only arch that needed this.
Signed-off-by: NMike Kravetz <kravetz@us.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This patch merges align.c, the result isn't quite what was in ppc64 nor
what was in ppc32 :) It should implement all the functionalities of both
though. Kumar, since you played with that in the past, I suppose you
have some test cases for verifying that it works properly before I dig
out the 601 machine ? :)

Since it's likely that I won't be able to test all scenario, code
inspection is much welcome.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

My earlier merge of delay.h introduced a timebase-based udelay for
32-bit machines but also broke the 601, which doesn't have the
timebase register.  This fixes it by using the 601's RTC register on
the 601, and also moves __delay() and udelay() to be out-of-line in
arch/powerpc/kernel/time.c.  These functions aren't really performance
critical, after all.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

When we moved things around in irq.h seq_file became an issue.  Fix
warnings related to its usage.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The SVRs for MPC8343/E were incorrect and really the SVRs
for MPC8347/E.
Signed-off-by: NDavid Updegraff <dave@cray.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Reserve the Maple RTC I/O resource.  Needed now we use genrtc.
Signed-off-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Replacing the string labels with numbers saves 117 bytes in the final zImage.
These local labels are not discared.
Signed-off-by: NOlaf Hering <olh@suse.de>

 arch/powerpc/boot/crt0.S |   23 +++++++++++------------
 1 files changed, 11 insertions(+), 12 deletions(-)
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The fix to topology.h (5cfccd7f) seems to have
a typeo, struct sched_domain has an idle_idx member but not an idle_id
member. I assume this is the fix.
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

When we moved things around in irq.h seq_file became an issue.  Fix
warnings related to its usage.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Revert: 8225ccba

Based upon a report by Yan Zheng.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>