- 06 Jun, 2004 5 commits
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Benjamin Herrenschmidt authored
The recent introduction of ptep_set_access_flags() with the optimisation of not flushing the TLB unfortunately broke ppc32 CPUs with no hash table. The data access exception code path in assembly for these doesn't properly deal with the case where the TLB entry is present with the wrong PAGE_RW and will just call do_page_fault again instead of just replacing the TLB entry. Fixing the asm code for all the different CPU types affected (yah, embedded PPCs all have different MMUs =P) is painful and need testing I can't do at the moment, so here's a fix that will just flush the TLB page when changing the access flags on non-hash based machines. Please apply. Signed-off-by:Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org
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Linus Torvalds authored
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Ingo Molnar authored
The scheduler changes had another thing missing: the appreciation of sync wakeups. (I had this in one of the earlier sched-domains cleanup patches before but it got lost in the shuffle.) When a sync waker is waking, we should subtract its load from the current load - it will schedule away for sure in the near future. That's what the "sync" bit means. This change is necessary because with the sched-domains balancer we have a much more sensitive cpu-load estimator, and in this particular context of try_to_wake_up() the sync waker's effect will always be part of the load. Patch against your patch attached. In my testing there's an additional increase in bw_pipe numbers on a dual P2 box, it went from 110-120 MB/sec to 120-130 MB/sec. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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http://linux-watchdog.bkbits.net/linux-2.6-watchdogLinus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Christoph Hellwig authored
watchdog.h is using __u8 and __u32 from linux/types.h, so it needs to include it.
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- 05 Jun, 2004 35 commits
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David S. Miller authored
into nuts.davemloft.net:/disk1/BK/net-2.6
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Olaf Hering authored
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Jamal Hadi Salim authored
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Jens Axboe authored
Lets just remove it. It's been disabled some time ago, and there's no chance of it ever getting resurrected. PATA TCQ has so many technical short comings, that it was never really interesting I'm afraid. Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Remove dead code from task_in_intr() and pre_task_mulout_intr() (CONFIG_IDE_TASKFILE_IO=n versions). Signed-off-by:
Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl> Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
- move common code to ide_do_rw_disk() (+ always print block number and rq->buffer) - use pr_debug() Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Remove needless exports from ide.c, ide-probe.c and ide-proc.c. Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
Signed-off-by:
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Bartlomiej Zolnierkiewicz authored
From: Christoph Hellwig <hch@lst.de> To be useful for distribution kernels it needs to be a runtime option. The original patch is from Joerg Platte via the Debian kernel package, with some adjustments from me (and me too - Bart). Signed-off-by:
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bk://kernel.bkbits.net/davem/sparc-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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http://lia64.bkbits.net/to-linus-2.5Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Corey Minyard authored
Geert Uytterhoeven wrote: While compiling drivers/char/ipmi/ipmi_si_intf.c in 2.6.6-rc1 on m68k, I noticed a missing include (needed for disable_irq_nosync() and enable_irq()): Furthermore none of CONFIG_ACPI_INTERPETER, CONFIG_X86, and CONFIG_PCI were set, and thus IPMI_MEM_ADDR_SPACE and IPMI_IO_ADDR_SPACE are not defined, but they are used. Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Dave Airlie authored
Adds support to the jedec probe for ST M50FW040, M50FW080 and M50FW016 all Firmware hubs for i8x0 chipsets, http://www.st.com/stonline/products/families/memories/fl_nor/fl_fwh.htm Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Corey Minyard authored
Presently we get procfs warnings from ipmi_si.ko due to its failing to remove all of a /proc directory's contents prior to removing that directory. This patch tracks all proc entries for an IPMI interface and unregisters them all upon removal. Signed-off-by:
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Benjamin Herrenschmidt authored
From: Colin Leroy <colin@colino.net> Paulus brought this up on IRC, it seems to be a bad DRM merge: The code #ifndef VMAP_4_ARGS if ( dev->agp->cant_use_aperture ) return -EINVAL; #endif in DRM(agp_acquire) should be removed altogether in a 2.6 kernel because its vmap() takes 4 arguments; however, only the guards seem to have been removed, which causes this function to erroneously fail if the AGP aperture can't be directly accessed by the CPU. Signed-off-by:Colin Leroy <colin@colino.net> Signed-off-by:
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Benjamin Herrenschmidt authored
The attached patch fixes the EDID parsing for PPC on rivafb. It actually finds the EDID info in the OF Tree now. I grabbed this from BenHs Tree as of 2.6.5-rc3. The current code has no chance to work since it doesn't walk the device tree. This helps rivafb on PPC at least a bit further... Signed-off-by:
Guido Guenther <agx@sigxcpu.org> Signed-off-by:
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Nick Piggin authored
David Mosberger noticed bw_pipe was way down on sched-domains kernels on SMP systems. That is due to two things: first, the previous wake-affine logic would *always* move a pipe wakee onto the waker's CPU. With the scheduler rework, this was toned down a lot (but extended to all types of wakeups). One of the ways this was damped was with the logic: don't move the wakee if its CPU is relatively idle compared to the waker's CPU. Without this, some workloads would pile everything up onto a few CPUs and get lots of idle time. However, the fix was a bit of a blunt hack: if the wakee runqueue was below 50% busy, and the waker's was above 50% busy, we wouldn't do the move. I think a better way to capture it is what this patch does: if the wakee runqueue is below 100% busy, and the sum of the two runqueue's loads is above 100% busy, and the wakee runqueue is less busy than the waker runqueue (ie. CPU utilisation would drop if we do the move), then we don't do the move. After I fixed this, I found things were still getting bounced around quite a bit. The reason is that we were attempting very aggressive idle balancing in order to cut down idle time in a dbt2-pgsql workload, which is particularly sensitive to idle. After having Mark Wong (markw@osdl.org) retest this load with this patch, it looks like we don't need to be so aggressive. I'm glad to be rid of this because it never sat too well with me. We should see slightly lower cost of schedule and slightly improved cache impact with this change too. Mark said: --- This looks pretty good: metric kernel 2334 2.6.7-rc2 2298 2.6.7-rc2-mm2 2329 2.6.7-rc2-mm2-sched-more-wakeaffine --- ie. within the noise. David said: --- Oooh, me likeee! Host OS Pipe AF UNIX --------- ------------- ---- ---- caldera.h Linux 2.6.6 3424 2057 (plain 2.6.6) caldera.h Linux 2.6.7-r 333. 1402 (original 2.6.7-rc1) caldera.h Linux 2.6.7-r 3086 4301 (2.6.7-rc1 with your patch) Pipe-bandwidth is still down about 10% but that may be due to unrelated changes (or perhaps warmup effects?). The AF UNIX bandwidth is just mindboggling. Moreover, with your patch 2.6.7-rc1 shows better context-switch times and lower communication latencies (more like the numbers you're getting on UP). So it seems like the overall balance of keeping things on the same CPU vs. distributing them across CPUs is improved. --- I also ran some tests on the NUMAQ. kernbench, dbench, hackbench, reaim were much the same. tbench was improved, very much so when clients < NR_CPU. Signed-off-by:Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Neil Brown authored
This condtion on this loop is primarily to avoid the loop if it doesn't appear to be needed. However it optimises a little too much and there is a case where it skips the loop when it is really needed. This patch fixes it. Signed-off-by:
Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
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Jens Axboe authored
There's a bad length check in cdrom_get_random_writable(), it's off-by-4 since fh->data_len is the length of data _after_ that field (which is offset 4 bytes in the header). Check is pretty bogus anyways, so just kill it. Signed-Off-By:
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Paul Fulghum authored
* Fix cleanup on driver init failure (call pci_unregister_driver if necessary) * Keep driver loaded if no hardware found (for dynid support) Signed-off-by:
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Paul Fulghum authored
* Fix cleanup on driver init failure Signed-off-by:
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Paul Fulghum authored
* Fix cleanup on driver init failure (call pci_unregister_driver if necessary) * Keep driver loaded if no hardware found (for dynid support) Signed-off-by:
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Kevin Corry authored
dm-ioctl.c: Use a size_t* instead of an int* in list_version_get_needed(). size_t and int are not the same size on all architectures. Signed-off-by:
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Andrew Morton authored
fs/nfs/direct.c: In function `nfs_file_direct_write': fs/nfs/direct.c:549: warning: initialization discards qualifiers from pointer target type Signed-off-by:
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Rusty Russell authored
As pointed out by Paul Jackson <pj@sgi.com>, sometimes 99 chars is not enough. We currently get a page from sysfs: that code should check we haven't overrun it. Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
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Andi Kleen authored
Often users only report what syslogd reports with KERN_ALERT when a kernel crash occurs. Make an oops print mpre information with that (in particular the RIP) Patch for i386 and x86-64. Signed-off-by:
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Neil Brown authored
This allows the number of "raid_disks" in a raid1 to be changed. This requires allocating a new pool of "r1bio" structures which a different number of bios, suspending IO, and swapping the new pool in place of the old. (and a few other related changes). Signed-off-by:
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Neil Brown authored
It is possible to have raid1/4/5/6 arrays that do not use all the space on the drive. This can be done explicitly, or can happen info you, one by one, replace all the drives with larger devices. This patch extends the "SET_ARRAY_INFO" ioctl (which previously invalid on active arrays) allow some attributes of the array to be changed and implements changing of the "size" attribute. "size" is the amount of each device that is actually used. If "size" is increased, the new space will immediately be "resynced". Signed-off-by:
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Neil Brown authored
If raid1 decides it needs to resync it will do so even if there is only one working device. This is pointless. With this patch we abort resync if there is nowhere to write to. Signed-off-by:
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Neil Brown authored
If the superblock isn't persistent, we shouldn't allow room for it. From: Paul Clements <Paul.Clements@SteelEye.com> Signed-off-by:
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Neil Brown authored
Normally the size is chosen as a multiple of the chunk size, but if the size is explicitly chosen, it might not be. So we force it. Signed-off-by:
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Neil Brown authored
This isn't really needed at the moment, but it is more consistant with the interface and may be needed later. Signed-off-by:
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Neil Brown authored
md_check_recovery only locks a device and does stuff when it thinks there is a real likelyhood that something needs doing. So the test at the top must cover all possibilities. But it didn't cover the possibility that the last outstanding request on a failed device had finished and so the device needed to be removed. As a result, a failed drive might not get removed from the personalities perspective on the array, and so it could never be removed from the array as a whole. With this patch, whenever ->nr_pending hits zero on a faulty device, MD_RECOVERY_NEEDED is set so that md_check_recovery will do stuff. Signed-off-by:
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