- 26 6月, 2005 40 次提交
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由 Cornelia Huck 提交于
Convert the dasd driver to use the new klist interface. Signed-off-by: NCornelia Huck <cohuck@de.ibm.com> Cc: Greg KH <greg@kroah.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Cornelia Huck 提交于
Convert the common I/O layer to use the klist interfaces. This patch has been adapted from the previous version to the changed interface semantics. Also, gcc 4.0 compile warnings have been removed. Signed-off-by: NCornelia Huck <cohuck@de.ibm.com> Cc: Greg KH <greg@kroah.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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Cope with a conditional i386 definition, which is wrong for UML. Before we just used that one, but it wasn't defined for CONFIG_SMP, so in that case we got link errors. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jeff Dike 提交于
Clean up the hot-unplugging code. There is now an id procedure which is called to figure out what device we're talking to. The error messages from that are now done from mconsole_remove instead of the driver. remove is now called with the device number, after it has been checked, so doesn't need to do sanity checking on it. Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jeff Dike 提交于
user_time_init_skas and user_time_init_tt were essentially the same. So, this merges them, deleting the mode-specific functions and declarations. Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jeff Dike 提交于
kmalloc wasn't being disabled during panic. This patch ensures that, no matter how UML is exiting, it is disabled. This matters because part of the cleanup is to remove the umid file, which involves readdir, which calls malloc. This must map to libc malloc, rather than kmalloc or vmalloc. Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jeff Dike 提交于
In skas mode, the call to uml_idle_timer permanently shut off the virtual timer, resulting in no timer ticks to anything but the idle thread. This is likely the cause of the soft lockups that are seen sporadically in recent UMLs. Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jeff Dike 提交于
Fix the do_fork calling convention: normal arch pass the regs and the new sp value to do_fork instead of NULL. Currently the arch-independent code ignores these values, while the UML code (actually it's copy_thread) gets the right values by itself. With this patch, things are fixed up. Signed-off-by: NPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Jesper Juhl 提交于
Here's a small patch to remove a few unnessesary NULL pointer checks before kfree() in arch/um/drivers/daemon_user.c Signed-off-by: NJesper Juhl <juhl-lkml@dif.dk> Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andrew Morton 提交于
Size of pointer doesn't seem right, but maybe my solution isn't either (sig_size maybe?). Signed-off-by: NDomen Puncer <domen@coderock.org> Signed-off-by: NJeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
Update video-after-suspend documentation; few more machines are added. Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
Show swsuspend only on .config where it can compile. I got this on PPC32 && SMP: kernel/power/smp.c:24: error: storage size of `ctxt' isn't known Also mark swsusp as no longer experimental. Signed-off-by: NOlaf Hering <olh@suse.de> Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 pavel@ucw.cz 提交于
Added reference implementation of suspend and resume routines. From: Shaohua Li <shaohua.li@intel.com> build fix Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Shaohua Li 提交于
In the cpu hotplug case, per-cpu data possibly isn't initialized even the system state is 'running'. As the comments say in the original code, some console drivers assume per-cpu resources have been allocated. radeon fb is one such driver, which uses kmalloc. After a CPU is down, the per-cpu data of slab is freed, so the system crashed when printing some info. Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
This patch fixes register saving so that each register is only saved once, and adds missing saving of %cr8 on x86-64. Some reordering so that save/restore is more logical/safer (segment registers should be restored after gdt). Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
The following patch moves the recalculation of nr_copy_pages so that the right number is used in the calculation of the size of memory and swap needed. It prevents swsusp from attempting to suspend if there is not enough memory and/or swap (which is unlikely anyway). Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
The following patch cleans up whitespace in swsusp.c (a bit): - removes any trailing whitespace - adds spaces after if, for, for_each_pbe, for_each_zone etc., wherever necessary. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
The following patch removes the unnecessary function does_collide_order(). This function is no longer necessary, as currently there are only 0-order allocations in swsusp, and the use of it is confusing. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
Without this patch, Linux provokes emergency disk shutdowns and similar nastiness. It was in SuSE kernels for some time, IIRC. Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
This fixes typos/formatting in video_extension.txt. Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
Sleep code uses wrong version of lgdt, that does the wrong thing when gdt is beyond 16MB or so. Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
CONFIG_PM_DISK is long gone, but it still managed to survived at few places. Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Pavel Machek 提交于
This updates documentation and fixes pointers in MAINTAINERS file. Signed-off-by: NPavel Machek <pavel@suse.cz> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Li Shaohua 提交于
Using CPU hotplug to support suspend/resume SMP. Both S3 and S4 use disable/enable_nonboot_cpus API. The S4 part is based on Pavel's original S4 SMP patch. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Nathan Lynch 提交于
We already do kobject_hotplug for cpu offline; this adds a kobject_hotplug call for the online case. This is being requested by developers of an application which wants to be notified about both kinds of events. Signed-off-by: NNathan Lynch <ntl@pobox.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Shaohua Li 提交于
Dead CPU notifies online CPU that it's dead using cpu_state variable. After switching to physical cpu hotplug, we forgot setting the variable. This patch fixes it. Currently only __cpu_die uses it. We changed other locations for consistency in case others use it. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Acked-by: NAshok Raj <ashok.raj@intel.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
This patch provides an option to switch broadcast or use mask version for sending IPI's. If CONFIG_HOTPLUG_CPU is defined, we choose not to use broadcast shortcuts by default, otherwise we choose broadcast mode as default. both cases, one can change this via startup cmd line option, to choose no-broadcast mode. no_ipi_broadcast=1 This is provided on request from Andi Kleen, since he doesnt agree with replacing IPI shortcuts as a solution for CPU hotplug. Without removing broadcast IPI's, it would mean lots of new code for __cpu_up() path, which would acheive the same results. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Acked-by: NAndi Kleen <ak@muc.de> Acked-by: NZwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
Broadcast IPI's provide un-expected behaviour for cpu hotplug. CPU's in offline state also end up receiving the IPI. Once the cpus become online they receive these stale IPI's which are bad and introduce unexpected behaviour. This is easily avoided by not sending a broadcast and addressing just the CPU's in online map. Doing prelim cycle counts it appears there is no big overhead and numbers seem around 0x3000-0x3900 on an average on x86 and x86_64 systems with CPUS running 3G, both for broadcast and mask version of the API's. The shortcuts are useful only for flat mode (where the perf shows no degradation), and in cluster mode, its unicast anyway. Its simpler to just not use broadcast anymore. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Acked-by: NAndi Kleen <ak@muc.de> Acked-by: NZwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
This patch is a minor cleanup to the cpu sibling/core map. It is required that this setup happens on a per-cpu bringup time. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Acked-by: NAndi Kleen <ak@muc.de> Acked-by: NZwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
Experimental CPU hotplug patch for x86_64 ----------------------------------------- This supports logical CPU online and offline. - Test with maxcpus=1, and then kick other cpu's off to test if init code is all cleaned up. CONFIG_SCHED_SMT works as well. - idle threads are forked on demand from keventd threads for clean startup TBD: 1. Not tested on a real NUMA machine (tested with numa=fake=2) 2. Handle ACPI pieces for physical hotplug support. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Acked-by: NAndi Kleen <ak@muc.de> Acked-by: NZwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: Shaohua.li<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
This patch adds __cpuinit and __cpuinitdata sections that need to exist past boot to support cpu hotplug. Caveat: This is done *only* for EM64T CPU Hotplug support, on request from Andi Kleen. Much of the generic hotplug code in kernel, and none of the other archs that support CPU hotplug today, i386, ia64, ppc64, s390 and parisc dont mark sections with __cpuinit, but only mark them as __devinit, and __devinitdata. If someone is motivated to change generic code, we need to make sure all existing hotplug code does not break, on other arch's that dont use __cpuinit, and __cpudevinit. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Acked-by: NAndi Kleen <ak@muc.de> Acked-by: NZwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
I really wish smp_prepare_cpu() would disappear eventually. In the interim this is ideally a weak function, so we dont end up changing several places to define this dummy in headers. Today since the dummy declaration is done only in drivers/base/cpu.c but the function is called in kernel/power/smp.c i get undefined reference in my cpu hotplug code for x86_64 under development. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Li Shaohua 提交于
Clean CPU states in order to reuse smp boot code for CPU hotplug. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Li Shaohua 提交于
Trival patch for CPU hotplug. In CPU identify part, only did cleaup for intel CPUs. Need do for other CPUs if they support S3 SMP. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Li Shaohua 提交于
Make sibling map init per-cpu. Hotplug CPU may change the map at runtime. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Li Shaohua 提交于
Make SEP init per-cpu, so it is hotplug safe. Signed-off-by: Li Shaohua<shaohua.li@intel.com> Signed-off-by: NAshok Raj <ashok.raj@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ashok Raj 提交于
This patch introduces a startup parameter no_broadcast. When we enable CONFIG_HOTPLUG_CPU, we dont want to use broadcast shortcut as it has ill effects on a offline cpu. If we issue broadcast, the IPI is also delivered to offline cpus, or partially up cpu causing stale IPI's to be handled, which is a problem and can cause undesirable effects. Introduces a new startup cmdline option no_ipi_broadcast, that can be switched at cmdline if necessary. Signed-off-by: NAshok Raj <ashok.raj@intel.com> Acked-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Zwane Mwaikambo 提交于
(The i386 CPU hotplug patch provides infrastructure for some work which Pavel is doing as well as for ACPI S3 (suspend-to-RAM) work which Li Shaohua <shaohua.li@intel.com> is doing) The following provides i386 architecture support for safely unregistering and registering processors during runtime, updated for the current -mm tree. In order to avoid dumping cpu hotplug code into kernel/irq/* i dropped the cpu_online check in do_IRQ() by modifying fixup_irqs(). The difference being that on cpu offline, fixup_irqs() is called before we clear the cpu from cpu_online_map and a long delay in order to ensure that we never have any queued external interrupts on the APICs. There are additional changes to s390 and ppc64 to account for this change. 1) Add CONFIG_HOTPLUG_CPU 2) disable local APIC timer on dead cpus. 3) Disable preempt around irq balancing to prevent CPUs going down. 4) Print irq stats for all possible cpus. 5) Debugging check for interrupts on offline cpus. 6) Hacky fixup_irqs() to redirect irqs when cpus go off/online. 7) play_dead() for offline cpus to spin inside. 8) Handle offline cpus set in flush_tlb_others(). 9) Grab lock earlier in smp_call_function() to prevent CPUs going down. 10) Implement __cpu_disable() and __cpu_die(). 11) Enable local interrupts in cpu_enable() after fixup_irqs() 12) Don't fiddle with NMI on dead cpu, but leave intact on other cpus. 13) Program IRQ affinity whilst cpu is still in cpu_online_map on offline. Signed-off-by: NZwane Mwaikambo <zwane@linuxpower.ca> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Shaohua Li 提交于
I'm doing the cpu hotplug stress test and found a variable ('ready') is overflow after several hundreds rounds of cpu hotplug. Here is a fix. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Shaohua Li 提交于
With hpet enabled, cpu hotplug uses some routines marked with __init. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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