- 25 Mar, 2008 17 commits
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Manish Ahuja authored
Add hypervisor-assisted dump to kernel config. Signed-off-by:
Linas Vepstas <linasvepstas@gmail.com> Signed-off-by:
Manish Ahuja <mahuja@us.ibm.com> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Manish Ahuja authored
This tracks the size freed. For now it does a simple rudimentary calculation of the ranges freed. The idea is to keep it simple at the external shell script level and send in large chunks for now. Signed-off-by:
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Manish Ahuja authored
This adds routines to a. invalidate dump b. calculate region that is reserved and needs to be freed. This is exported through sysfs interface. Unregister has been removed for now as it wasn't being used. Signed-off-by:
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Manish Ahuja authored
Provide some basic debugging support. Signed-off-by:
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Manish Ahuja authored
Set up the actual dump header, register it with the hypervisor. Signed-off-by:
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Manish Ahuja authored
Check to see if there actually is data from a previously crashed kernel waiting. If so, allow user-space tools to grab the data (by reading /proc/kcore). When user-space finishes dumping a section, it must release that memory by writing to sysfs. For example, echo "0x40000000 0x10000000" > /sys/kernel/release_region will release 256MB starting at the 1GB. The released memory becomes free for general use. Signed-off-by:
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Manish Ahuja authored
Initial patch for reserving memory in early boot, and freeing it later. If the previous boot had ended with a crash, the reserved memory would contain a copy of the crashed kernel data. Signed-off-by:
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Manish Ahuja authored
Basic documentation for hypervisor-assisted dump. Signed-off-by:
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Roland McGrath authored
These items in asm-offsets.c are not used anywhere. This removes them. Signed-off-by:
Roland McGrath <roland@redhat.com> Signed-off-by:
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S.Çağlar Onur authored
The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values. This implements usage of the time_after() macro, defined at linux/jiffies.h, which deals with wrapping correctly. Signed-off-by:
S.Çağlar Onur <caglar@pardus.org.tr> Acked-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Tony Breeds authored
The hypervisor can look at the value in the wait_state_cycles field of the VPA for an estimate of how busy dedicated processors are. Currently, as the kernel never touches this field, we appear to be 100% busy. This records the duration the kernel is in powersave and passes that to the HV to provide a reasonable indication of utilisation. Signed-off-by:
Tony Breeds <tony@bakeyournoodle.com> Signed-off-by:
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Roland McGrath authored
The PT_DTRACE flag is meaningless and obsolete. Don't touch it. Signed-off-by:
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Stephen Rothwell authored
It was being protected by CONFIG_PPC32, but we want to export it on 64-bit also. This moves it out of the ifdef. Signed-off-by:
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Nathan Lynch authored
Some machines supported by the maple platform have an Obsidian controller which can't be used without enabling CONFIG_IPR and the options on which it depends. Signed-off-by:
Nathan Lynch <ntl@pobox.com> Signed-off-by:
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Nathan Lynch authored
This function has been a no-op for about 18 months; it's there in the history should anyone need to resurrect it. Signed-off-by:
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Nathan Lynch authored
Prevailing practice for define_machine() in powerpc is to use the platform name when the platform has only one define_machine() statement, but maple uses "maple_md". This caused me some head-scratching when writing some new code that uses machine_is(maple). Use "maple" instead of "maple_md". There should not be any behavioral change -- fixup_maple_ide() calls machine_is(maple) but the body of the function is ifdef'd out. Signed-off-by:
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Marian Balakowicz authored
Print out 'model' property of '/' node as a machine name in generic show_cpuinfo() routine. Signed-off-by:
Marian Balakowicz <m8@semihalf.com> Acked-by:
David Gibson <david@gibson.dropbear.id.au> Acked-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
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- 13 Mar, 2008 2 commits
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Paul Mackerras authored
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (22 commits) [POWERPC] Fix large hash table allocation on Cell blades [POWERPC] Export empty_zero_page [POWERPC] Fix viodasd driver with scatterlist debug [POWERPC] Fix arch/powerpc/platforms/powermac/pic.c when !CONFIG_ADB_PMU [POWERPC] Fix drivers/macintosh/mediabay.c when !CONFIG_ADB_PMU [POWERPC] Fix undefined pmu_sys_suspended compilation error [POWERPC] Fix build of modular drivers/macintosh/apm_emu.c [POWERPC] Fix sleep on some powerbooks [POWERPC] Fix bogus test for unassigned PCI resources [POWERPC] Fix zImage-dtb.initrd build error [POWERPC] Add __ucmpdi2 for 64-bit comparisons in 32-bit kernels [POWERPC] spufs: fix rescheduling of non-runnable contexts [POWERPC] spufs: don't (ab)use SCHED_IDLE [POWERPC] QE: Make qe_get_firmware_info reentrant [POWERPC] 83xx: Make 83xx perfmon support selectable [PPC] 8xx: swap bug-fix [POWERPC] 85xx: sbc8548 - Fix incorrect PCI-X and PCI interrupt map [POWERPC] QE: Fix QE firmware uploading limit [POWERPC] 8xx: Fix wrapper platform for adder875, and combine defconfigs. [POWERPC] 8xx: fix swap ...
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- 12 Mar, 2008 21 commits
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Michael Ellerman authored
My recent hack to allocate the hash table under 1GB on cell was poorly tested, *cough*. It turns out on blades with large amounts of memory we fail to allocate the hash table at all. This is because RTAS has been instantiated just below 768MB, and 0-x MB are used by the kernel, leaving no areas that are both large enough and also naturally-aligned. For the cell IOMMU hack the page tables must be under 2GB, so use that as the limit instead. This has been tested on real hardware and boots happily. Signed-off-by:
Michael Ellerman <michael@ellerman.id.au> Signed-off-by:
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Theodore Ts'o authored
Once again, this time with feeling.... - Ted >From c91cfaabc17f8a53807a2f31f067a732e34a1550 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o <tytso@mit.edu> Date: Wed, 12 Mar 2008 11:50:39 -0400 Subject: Export empty_zero_page The empty_zero_page symbol is exported by most other architectures (s390, ia64, x86, um), and an upcoming ext4 patch needs it because ZERO_PAGE() references empty_zero_page, and we need it to zero out an unitialized extents in ext4 files. Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu> Signed-off-by:
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Benjamin Herrenschmidt authored
The iSeries viodasd drivers does some very strange things with scatterlists, one of these causing a BUG_ON to trigger when scatterlist debugging is enabled due to initializing the scatterlist with memset instead of sg_init_table(). This fixes it by using sg_init_table(). The rest of the stuff it does to that poor list is still pretty awful but it will work. I may look into fixing things in a nicer way some other time. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Tony Breeds authored
When building arch/powerpc/platforms/powermac/pic.c when !CONFIG_ADB_PMU we get the following warnings: arch/powerpc/platforms/powermac/pic.c: In function 'pmacpic_find_viaint': arch/powerpc/platforms/powermac/pic.c:623: warning: label 'not_found' defined but not used This fixes it. Signed-off-by:
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Tony Breeds authored
When building drivers/macintosh/mediabay.c if CONFIG_ADB_PMU isn't defined we get: drivers/built-in.o: In function `media_bay_step': mediabay.c:(.text+0x92b84): undefined reference to `pmu_suspend' mediabay.c:(.text+0x92c08): undefined reference to `pmu_resume' Create empty place holders in that scenario. Signed-off-by:
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Tony Breeds authored
pmu_sys_suspended is declared extern when: defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32) but only defined when: defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) which is wrong. Let's fix that. Signed-off-by:
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Guido Guenther authored
Currently, if drivers/macintosh/apm_emu is a module and the config doesn't have CONFIG_SUSPEND we get: ERROR: "pmu_batteries" [drivers/macintosh/apm_emu.ko] undefined! ERROR: "pmu_battery_count" [drivers/macintosh/apm_emu.ko] undefined! ERROR: "pmu_power_flags" [drivers/macintosh/apm_emu.ko] undefined! on PPC32. The variables aren't wrapped in '#if defined(CONFIG_SUSPEND)' so we probably shouldn't wrap the exports either. This removes the CONFIG_SUSPEND part of the export, which fixes compilation on ppc32. Signed-off-by:
Guido Guenther <agx@sigxcpu.org> Signed-off-by:
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Benjamin Herrenschmidt authored
The PMU backlight code would kick in during sleep/resume even on machines that use a different backlight method. This breaks sleep on some PowerBooks. This fixes it by adding a flag to indicate whether the backlight is controlled by the PMU, and testing that before trying to use the PMU to turn off the backlight during sleep. Signed-off-by:
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Benjamin Herrenschmidt authored
A bogus test for unassigned resources that came from our 32-bit PCI code ended up being "merged" by my previous patch series, breaking some 64-bit setups where devices have legal resources ending at 0xffffffff. This fixes it by completely changing the test. We now test for res->start == 0, as the generic code expects, and we also only do so on platforms that don't have the PPC_PCI_PROBE_ONLY flag set, as there are cases of pSeries and iSeries where it could be a valid value and those can't reassign devices. Signed-off-by:
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Grant Likely authored
The pattern substitution rules were failing when used with zImage-dtb targets. If zImage-dtb.initrd was selected, the pattern substitution would generate "zImage.initrd-dtb" instead of "zImage-dtb.initrd" which caused the build to fail. This renames zImage-dtb to dtbImage to avoid the problem entirely. By not using the zImage prefix then is no potential for namespace collisions. Signed-off-by:
Grant Likely <grant.likely@secretlab.ca> Acked-by:
Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by:
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Paul Mackerras authored
Some drivers (such as V4L2) have code that causes gcc to generate calls to __ucmpdi2 when compiling for 32-bit powerpc, which results in either a link-time error or a module that can't be loaded, as we don't currently have a __ucmpdi2. This adds one so these drivers can be used. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) [SCTP]: Fix local_addr deletions during list traversals. net: fix build with CONFIG_NET=n [TCP]: Prevent sending past receiver window with TSO (at last skb) rt2x00: Add new D-Link USB ID rt2x00: never disable multicast because it disables broadcast too libertas: fix the 'compare command with itself' properly drivers/net/Kconfig: fix whitespace for GELIC_WIRELESS entry [NETFILTER]: nf_queue: don't return error when unregistering a non-existant handler [NETFILTER]: nfnetlink_queue: fix EPERM when binding/unbinding and instance 0 exists [NETFILTER]: nfnetlink_log: fix EPERM when binding/unbinding and instance 0 exists [NETFILTER]: nf_conntrack: replace horrible hack with ksize() [NETFILTER]: nf_conntrack: add \n to "expectation table full" message [NETFILTER]: xt_time: fix failure to match on Sundays [NETFILTER]: nfnetlink_log: fix computation of netlink skb size [NETFILTER]: nfnetlink_queue: fix computation of allocated size for netlink skb. [NETFILTER]: nfnetlink: fix ifdef in nfnetlink_compat.h [NET]: include <linux/types.h> into linux/ethtool.h for __u* typedef [NET]: Make /proc/net a symlink on /proc/self/net (v3) RxRPC: fix rxrpc_recvmsg()'s returning of msg_name net/enc28j60: oops fix ...
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git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds authored
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: chips subdirectory is deprecated i2c: Keep client->driver and client->dev.driver in sync i2c-amd756: Fix off-by-one
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git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds authored
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Clocksource: Only install r4k counter as clocksource if present. [MIPS] Lasat: fix LASAT_CASCADE_IRQ [MIPS] Delete leftovers of old pcspeaker support. [MIPS] BCM1480: Init pci controller io_map_base [MIPS] Yosemite: Fix a few more section reference bugs. [MIPS] Fix yosemite build error [MIPS] Fix loads of section missmatches [MIPS] IP27: Tighten up CPU description to fix warnings. [MIPS] Fix plat_ioremap for JMR3927 [MIPS] Export __ucmpdi2 to modules. [MIPS] Fix typo in comment [MIPS] Use KBUILD_DEFCONFIG [MIPS] Allow 48Hz to be selected if CONFIG_SYS_SUPPORTS_ARBIT_HZ is set. [MIPS] Added missing cases for rdhwr emulation [MIPS] Alchemy: Fix ids in Alchemy db dma device table
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Bjorn Helgaas authored
Some BIOSes have PNP motherboard devices with resources that partially overlap PCI BARs. The PNP system driver claims these motherboard resources, which prevents the normal PCI driver from requesting them later. This patch disables the PNP resources that conflict with PCI BARs so they won't be claimed by the PNP system driver. Of course, this only works if PCI devices have already been enumerated. Currently this is the case because PCI devices are discovered before any PNP init via this path: acpi_pci_root_init() -> acpi_pci_root_add() -> pci_acpi_scan_root() -> pci_scan_bus_parented() -> pci_scan_child_bus() -> ... Avuton Olrich tested this and confirmed that it fixes his ALSA sound card (see http://lkml.org/lkml/2008/1/27/168). References: https://bugzilla.redhat.com/show_bug.cgi?id=280641 https://bugzilla.redhat.com/show_bug.cgi?id=313491 http://lkml.org/lkml/2008/1/9/449 http://thread.gmane.org/gmane.linux.acpi.devel/27312 http://lkml.org/lkml/2008/1/27/168Signed-off-by:Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Bjorn Helgaas authored
There are other systems with similar problems (http://lkml.org/lkml/2008/1/27/168), so we need a more generic quirk. Remove the Supermicro-specific one first. Signed-off-by:
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Tom Tucker authored
The assertion that checks for sge context overflow is incorrectly hard-coded to 32. This causes a kernel bug check when using big-data mounts. Changed the BUG_ON to use the computed value RPCSVC_MAXPAGES. Signed-off-by:
Tom Tucker <tom@opengridcomputing.com> Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by:
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Tom Tucker authored
RDMA connection shutdown on an SMP machine can cause a kernel crash due to the transport close path racing with the I/O tasklet. Additional transport references were added as follows: - A reference when on the DTO Q to avoid having the transport deleted while queued for I/O. - A reference while there is a QP able to generate events. - A reference until the DISCONNECTED event is received on the CM ID Signed-off-by:
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Roland McGrath authored
Fixes: block/genhd.c:361: warning: ignoring return value of ‘class_register’, declared with attribute warn_unused_result Signed-off-by:
Jeff Garzik <jeff@garzik.org> Signed-off-by:
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David Woodhouse authored
It was all wrapped in '#ifdef CONFIG_BLOCK' anyway, so userspace was getting nothing useful out of it. And the special #ifndef __KERNEL__ version of 'struct partition' makes me inclined to promote an attitude of violence... Stick some comments on some of the #endifs too, while we're at it. Signed-off-by:
David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Paul Mundt authored
Introduced in commit-id 9e2779fa and ifdef'ed out for nommu in 8ca3ed87, both approaches end up breaking the nommu build in different ways. An impressive feat for a 2-liner. Current is_vmalloc_addr() users fall in to two camps: - Determining whether to use vfree()/kfree() - Whether to do vmlist traversal (only /proc/kcore). Since we don't support /proc/kcore on nommu, that leaves the vfree()/kfree() determination use cases. nommu vfree() happens to be a wrapper to kfree() anyways, so is_vmalloc_addr() can always return 0 and end up with the right behaviour. Signed-off-by:
Paul Mundt <lethal@linux-sh.org> Signed-off-by:
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