- 22 Sep, 2009 22 commits
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Martin Schwidefsky authored
Signed-off-by:Martin Schwidefsky <schwidefsky@de.ibm.com>
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Michael Holzheu authored
Currently, when the physical resume CPU is not equal to the physical suspend CPU, we swap the CPUs logically, by modifying the logical/physical CPU mapping. This has two major drawbacks: First the change is visible from user space (e.g. CPU sysfs files) and second it is hard to ensure that nowhere in the kernel the physical CPU ID is stored before suspend. To fix this, we now really swap the physical CPUs, if the resume CPU is not the pysical suspend CPU. We restart the suspend CPU and stop the resume CPU using SIGP restart and SIGP stop. If the suspend CPU is no longer available, we write a message and load a disabled wait PSW. Signed-off-by:
Michael Holzheu <michael.holzheu@linux.vnet.ibm.com> Signed-off-by:
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Stefan Weinhuber authored
The DASD device driver reads the feature codes of a device during device initialization. These codes are later used to determine the availability of advanced features like PAV or High Performance FICON. Some very old devices do not support the command to read feature codes and the initialization routine fails. As the feature codes are not necessary for basic DASD operations, we can support such devices by just ignoring missing feature codes. Signed-off-by:
Stefan Weinhuber <wein@de.ibm.com> Signed-off-by:
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Felix Beck authored
Devices are no longer removed or added in the suspend and resume callbacks. Instead they are marked unregistered in suspend. In the resume callback the ap_scan_bus method is scheduled. The bus scan function will remove the old device and add new ones. This way all the device handling will be done in only one function. Additionaly the case where the domain might change during suspend/resume is caught. In that case the devices qid needs to re-calculated in order of having it found by the scan method. Signed-off-by:
Felix Beck <felix.beck@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
pfn_is_nosave doesn't return the correct value for the second lowcore page if lowcore protection is enabled. Make sure it always returns the correct value. While at it simplify the whole thing. NSS special handling is done by the tprot check like it already works for DCSS as well. So remove the extra code for NSS. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Removes a couple of simple code duplications. But before I have to do this again, just simplify it. Signed-off-by:
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Christian Borntraeger authored
arch_ptrace on s390 implements PTRACE_(PEEK|POKE)(TEXT|DATA) instead of using using ptrace_request in kernel/ptrace.c. The only reason is the 31bit addressing mode, where we have to unmask the highest bit. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
The disabled_wait inline assmembly also clobbers register r1, but it is missing in the clobber list. Fixes recursive Oops on panic. Signed-off-by:
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Heiko Carstens authored
Make the inline assembly look like all others. Signed-off-by:
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Heiko Carstens authored
Force system into defined state after resume. Signed-off-by:
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Heiko Carstens authored
On resume the system that loads the to be resumed image might have unstable pages. When the resume image is copied back and a write access happen to an unstable page this causes an exception and the system crashes. To fix this set all free pages to stable before copying the resumed image data. Also after everything has been restored set all free pages of the resumed system to unstable again. Signed-off-by:
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Heiko Carstens authored
These functions aren't needed. Might be a leftover of the pre cond_syscall time. Signed-off-by:
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Heiko Carstens authored
Use function parameters instead of accessing the pt_regs structure to get the parameters. Signed-off-by:
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Heiko Carstens authored
Use function parameters instead of accessing the pt_regs structure to get the parameters. Also merge the 31 and 64 bit versions since they are identical. Signed-off-by:
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Jan Glauber authored
If input buffers stay in primed state qdio may not receive further interrupts for the input queue depending on the firmware. That can cause a connection hang on OSA cards. Change the state of all primed input buffers that are not acknowledged to not initialized. Signed-off-by:
Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by:
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Jan Glauber authored
Even if turned off the debug message overhead is measurable in the hot path. Reduce the number of debug message calls in do_QDIO and qdio_kick_handler. Also use hex numbers to save space in the debug entries. Signed-off-by:
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Sebastian Ott authored
Previously, there were multiple subchannel scanning mechanisms which could potentially conflict with each other. Fix this problem by moving blacklist and ccw driver triggered scanning to the existing evaluation method. Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
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Sebastian Ott authored
The functions idset_sch_new and for_each_subchannel_staged use different values for the number of subchannel sets. Make it consistent by changing idset_sch_new to also use the actual number of subchannel sets. Signed-off-by:
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Sebastian Ott authored
Don't use kfree to free memory allocated by vmalloc. Signed-off-by:
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Sebastian Ott authored
Introduce the css_driver callback settle which can be implemented by a subchannel driver to wait for the subchannel type specific asynchronous work to finish. In channel_subsystem_init_sync we call that for each subchannel driver. Signed-off-by:
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Sebastian Ott authored
Use css_eval_scheduled to determine if all scheduled subchannel evaluation is finished. Wait for this value to be 0 in the channel subsystem init function. Signed-off-by:
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Sebastian Ott authored
Define initialization sequence of css and ccw bus init calls by merging them into a single init call. Also introduce channel_subsystem_init_sync to wait for the initialization of devices to finish. Signed-off-by:
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- 21 Sep, 2009 18 commits
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Linus Torvalds authored
Merge branch 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: Tidy up after the big rename perf: Do the big rename: Performance Counters -> Performance Events perf_counter: Rename 'event' to event_id/hw_event perf_counter: Rename list_entry -> group_entry, counter_list -> group_list Manually resolved some fairly trivial conflicts with the tracing tree in include/trace/ftrace.h and kernel/trace/trace_syscalls.c.
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Linus Torvalds authored
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Fix whitespace inconsistencies rcu: Fix thinko, actually initialize full tree rcu: Apply results of code inspection of kernel/rcutree_plugin.h rcu: Add WARN_ON_ONCE() consistency checks covering state transitions rcu: Fix synchronize_rcu() for TREE_PREEMPT_RCU rcu: Simplify rcu_read_unlock_special() quiescent-state accounting rcu: Add debug checks to TREE_PREEMPT_RCU for premature grace periods rcu: Kconfig help needs to say that TREE_PREEMPT_RCU scales down rcutorture: Occasionally delay readers enough to make RCU force_quiescent_state rcu: Initialize multi-level RCU grace periods holding locks rcu: Need to update rnp->gpnum if preemptable RCU is to be reliable
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Linus Torvalds authored
Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf_counter, powerpc, sparc: Fix compilation after perf_counter_overflow() change perf_counter: x86: Fix PMU resource leak perf util: SVG performance improvements perf util: Make the timechart SVG width dynamic perf timechart: Show the duration of scheduler delays in the SVG perf timechart: Show the name of the waker/wakee in timechart
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Linus Torvalds authored
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Simplify sys_sched_rr_get_interval() system call sched: Fix potential NULL derference of doms_cur sched: Fix raciness in runqueue_is_locked() sched: Re-add lost cpu_allowed check to sched_fair.c::select_task_rq_fair() sched: Remove unneeded indentation in sched_fair.c::place_entity()
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Linus Torvalds authored
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_file tracing: Export trace_profile_buf symbols tracing/events: use list_for_entry_continue tracing: remove max_tracer_type_len function-graph: use ftrace_graph_funcs directly tracing: Remove markers tracing: Allocate the ftrace event profile buffer dynamically tracing: Factorize the events profile accounting
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Linus Torvalds authored
Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Print the hypervisor returned tsc_khz during boot x86: Correct segment permission flags in 64-bit linker script x86: cpuinit-annotate SMP boot trampolines properly x86: Increase timeout for EHCI debug port reset completion in early printk x86: Fix uaccess_32.h typo x86: Trivial whitespace cleanups x86, apic: Fix missed handling of discrete apics x86/i386: Remove duplicated #include x86, mtrr: Convert loop to a while based construct, avoid naked semicolon Revert 'x86: Fix system crash when loading with "reservetop" parameter' x86, mce: Fix compile warning in case of CONFIG_SMP=n x86, apic: Use logical flat on intel with <= 8 logical cpus x86: SGI UV: Map MMIO-High memory range x86: SGI UV: Add volatile semantics to macros that access chipset registers x86: SGI UV: Fix IPI macros x86: apic: Convert BUG() to BUG_ON() x86: Remove final bits of CONFIG_X86_OLD_MCE
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'writeback' of git://git.kernel.dk/linux-2.6-block: nfs: initialize the backing_dev_info when creating the server writeback: make balance_dirty_pages() gradually back more off writeback: don't use schedule_timeout() without setting runstate nfs: nfs_kill_super() should call bdi_unregister() after killing super
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6Linus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (222 commits) V4L/DVB (13033): pt1: Don't use a deprecated DMA_BIT_MASK macro V4L/DVB (13029): radio-si4713: remove #include <linux/version.h> V4L/DVB (13027): go7007: convert printks to v4l2_info V4L/DVB (13026): s2250-board: Implement brightness and contrast controls V4L/DVB (13025): s2250-board: Fix memory leaks V4L/DVB (13024): go7007: Implement vidioc_g_std and vidioc_querystd V4L/DVB (13023): go7007: Merge struct gofh and go declarations V4L/DVB (13022): go7007: Fix mpeg controls V4L/DVB (13021): go7007: Fix whitespace and line lengths V4L/DVB (13020): go7007: Updates to Kconfig and Makefile V4L/DVB (13019): video: initial support for ADV7180 V4L/DVB (13018): kzalloc failure ignored in au8522_probe() V4L/DVB (13017): gspca: kmalloc failure ignored in sd_start() V4L/DVB (13016): kmalloc failure ignored in lgdt3304_attach() and s921_attach() V4L/DVB (13015): kmalloc failure ignored in m920x_firmware_download() V4L/DVB (13014): Add support for Compro VideoMate E800 (DVB-T part only) V4L/DVB (13013): FM TX: si4713: Kconfig: Fixed two typos. V4L/DVB (13012): uvc: introduce missing kfree V4L/DVB (13011): Change tuner type of BeholdTV cards V4L/DVB (13009): gspca - stv06xx-hdcs: Reduce exposure range ...
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git://git.infradead.org/ubifs-2.6Linus Torvalds authored
* 'linux-next' of git://git.infradead.org/ubifs-2.6: UBIFS: fix debugging dump UBIFS: improve lprops dump UBIFS: various minor commentary fixes UBIFS: improve journal head debugging prints UBIFS: define journal head numbers in ubifs-media.h UBIFS: amend commentaries UBIFS: check ubifs_scan error codes better UBIFS: do not print scary error messages needlessly UBIFS: add inode size debugging check UBIFS: constify file and inode operations UBIFS: remove unneeded call from ubifs_sync_fs UBIFS: kill BKL UBIFS: remove unused functions UBIFS: suppress compilation warning
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git://git.infradead.org/ubi-2.6Linus Torvalds authored
* 'linux-next' of git://git.infradead.org/ubi-2.6: UBI: improve NOR flash erasure quirk UBI: introduce flash dump helper UBI: eliminate possible undefined behaviour UBI: print a warning if too many PEBs are corrupted UBI: amend NOR flash pre-erase quirk UBI: print a message if ECH is corrupted and VIDH is ok
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6Linus Torvalds authored
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (133 commits) drm/vgaarb: add VGA arbitration support to the drm and kms. drm/radeon: some r420s have a CP race with the DMA engine. drm/radeon/r600/kms: rv670 is not DCE3 drm/radeon/kms: r420 idle after programming GA_ENHANCE drm/radeon/kms: more fixes to rv770 suspend/resume path. drm/radeon/kms: more alignment for rv770.c with r600.c drm/radeon/kms: rv770 blit init called too late. drm/radeon/kms: move around new init path code to avoid posting at init drm/radeon/r600: fix some issues with suspend/resume. drm/radeon/kms: disable VGA rendering engine before taking over VRAM drm/radeon/kms: Move radeon_get_clock_info() call out of radeon_clocks_init(). drm/radeon/kms: add initial connector properties drm/radeon/kms: Use surfaces for scanout / cursor byte swapping on big endian. drm/radeon/kms: don't fail if we fail to init GPU acceleration drm/r600/kms: fixup number of loops per blit calculation. drm/radeon/kms: reprogram format in set base. drm/radeon: avivo chips have no separate int bit for display drm/radeon/r600: don't do interrupts drm: fix _DRM_GEM addmap error message drm: update crtc x/y when only fb changes ... Fixed up trivial conflicts in firmware/Makefile due to network driver (cxgb3) and drm (mga/r128/radeon) firmware being listed next to each other.
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Ingo Molnar authored
The build of the dabusb driver broke: drivers/media/video/dabusb.c:758: error: unknown field 'nodename' specified in initializer drivers/media/video/dabusb.c:758: warning: initialization from incompatible pointer type make[3]: *** wait: No child processes. Stop. Due to this commit: e454cea2: Driver-Core: extend devnode callbacks to provide permissions Missing the dabusb driver's dabusb_nodename() callback. Similar issues with the iio/industrialio driver in staging, pointed out and patched by Jean Delvare. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Industrialio-parts-by:
Jean Delvare <khali@linux-fr.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jens Axboe authored
NFS may free the server structure without ever having used the bdi, so we either need to flag the bdi as being uninitialized or initialize it up front. This does the latter. This fixes a crash with mounting more than one NFS file system, should people ever need that kind of obscure NFS functionality. Tested-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
Jens Axboe <jens.axboe@oracle.com>
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Jens Axboe authored
Currently it just sleeps for a very short time, just 1 jiffy. If we keep looping in there, continually delay for a little longer of up to 100msec in total. That was the old limit for congestion wait. Signed-off-by: -
Jens Axboe authored
Just use schedule_timeout_interruptible(), saves a call to set_current_state(). Signed-off-by: -
Jens Axboe authored
Otherwise we could be attempting to flush data for a writeback thread and bdi that have already disappeared. Signed-off-by: -
Ingo Molnar authored
- provide compatibility Kconfig entry for existing PERF_COUNTERS .config's - provide courtesy copy of old perf_counter.h, for user-space projects - small indentation fixups - fix up MAINTAINERS - fix small x86 printout fallout - fix up small PowerPC comment fallout (use 'counter' as in register) Reviewed-by:
Arjan van de Ven <arjan@linux.intel.com> Acked-by:
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Ingo Molnar authored
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by:Stephane Eranian <eranian@google.com> Acked-by:
Paul Mackerras <paulus@samba.org> Reviewed-by:
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