- 06 Jan, 2006 40 commits
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Rafael J. Wysocki authored
This changes the handling of swap partitions by swsusp to avoid locking of the swap devices that are not used for suspend and, consequently, simplifies the code. Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Rafael J. Wysocki authored
This adds the function get_swap_page_of_type() allowing us to specify an index in swap_info[] and select a swap_info_struct structure to be used for allocating a swap page. This function (or another one of similar functionality) will be necessary for implementing the image-writing part of swsusp in the user space. It can also be used for simplifying the current in-kernel implementation of the image-writing part of swsusp. Signed-off-by:
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Rafael J. Wysocki authored
Make the suspend image size limit tunable via /sys/power/image_size. It is necessary for systems on which there is a limited amount of swap available for suspend. It can also be useful for optimizing performance of swsusp on systems with 1 GB of RAM or more. Signed-off-by:
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Rafael J. Wysocki authored
Limit the size of the suspend image to approx. 500 MB, which should improve the overall performance of swsusp on systems with more than 1 GB of RAM. It introduces the constant IMAGE_SIZE that can be set to the preferred size of the image (in MB) and modifies the memory-shrinking part of swsusp to take this constant into account (500 is the default value of IMAGE_SIZE). Signed-off-by:
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Pavel Machek authored
These two prototypes are already present in sched.h, remove duplicate version. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Patrick Mochel authored
This change removes the old, deprecated interface from the opl3sa2 driver, including the pm_{,un}register() calls, the local storage of the pmdev object and the reference to the old header files. This change is done to assist in eradicating the users of the legacy interface so as to help facilitate the removal of the interface itself. Signed-off-by:Patrick Mochel <mochel@linux.intel.com> Signed-off-by:
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Patrick Mochel authored
This change removes the old, deprecated interface from the nm256 driver, including the pm_{,un}register() calls, the local storage of the pmdev object and the reference to the old header files. This change is done to assist in eradicating the users of the legacy interface so as to help facilitate the removal of the interface itself. Note that this driver has been obsoleted by an ALSA equivalent. Signed-off-by: -
Patrick Mochel authored
This change removes the old, deprecated interface from the maestro driver, including the pm_{,un}register() calls, the local storage of the pmdev object and the reference to the old header files. This change is done to assist in eradicating the users of the legacy interface so as to help facilitate the removal of the interface itself. The check_suspend() function and associated logic was not removed, even though it is now unnecessary. Note that this driver has been obsoleted by an ALSA equivalent. Acked-by:Zach Brown <zab@zabbo.net> Signed-off-by:
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Patrick Mochel authored
This change removes the old, deprecated interface from the cs46xx driver, including the pm_{,un}register() calls, the local storage of the pmdev object and the reference to the old header files. This change is done to assist in eradicating the users of the legacy interface so as to help facilitate the removal of the interface itself. Note this driver has PCI PM hooks which are set properly. It also has the ability to trigger suspend/resume from an ioctl. This functionality was not touched, though it could use a serious review if this driver continues to persist in the mainline tree.. Note that this driver has been obsoleted by an ALSA equivalent. Signed-off-by: -
Patrick Mochel authored
This change removes the old, deprecated interface from the cs4281 driver, including the pm_{,un}register() calls, the local storage of the pmdev object and the reference to the old header files. This change is done to assist in eradicating the users of the legacy interface so as to help facilitate the removal of the interface itself. Note that this driver has been obsoleted by an ALSA equivalent. Note that this driver has hooks for PCI power management, but does not implement the ->suspend()/->resume() methods. Signed-off-by: -
Patrick Mochel authored
This change removes the old, deprecated interface from the ad1848 driver, including the pm_{,un}register() calls, the local storage of the pmdev object and the reference to the old header files. This change is done to assist in eradicating the users of the legacy interface so as to help facilitate the removal of the interface itself. Signed-off-by: -
Rafael J. Wysocki authored
This patch fixes a problem with the function enough_free_mem() used by swsusp to verify if there is a sufficient number of memory pages available to it to create and save the suspend image. Namely, enough_free_mem() uses nr_free_pages() to obtain the number of free memory pages, which is incorrect, because this function returns the total number of free pages, including free highmem pages, and the highmem pages cannot be used by swsusp for storing the image data. The patch makes enough_free_mem() avoid counting the free highmem pages as available to swsusp. Signed-off-by:
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Rafael J. Wysocki authored
This patch makes swsusp free only as much memory as needed to complete the suspend and not as much as possible. In the most of cases this should speed up the suspend and make the system much more responsive after resume, especially if a GUI (eg. X Windows) is used. If needed, the old behavior (ie to free as much memory as possible during suspend) can be restored by unsetting FAST_FREE in power.h Signed-off-by:
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Rafael J. Wysocki authored
This patch introduces the swap map structure that can be used by swsusp for keeping tracks of data pages written to the swap. The structure itself is described in a comment within the patch. The overall idea is to reduce the amount of metadata written to the swap and to write and read the image pages sequentially, in a file-alike way. This makes the swap-handling part of swsusp fairly independent of its snapshot-handling part and will hopefully allow us to completely separate these two parts in the future. This patch is needed to remove the suspend image size limit imposed by the limited size of the swsusp_info structure, which is essential for x86-64 systems with more than 512 MB of RAM. Signed-off-by:
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Rafael J. Wysocki authored
This patch removes the image encryption that is only used by swsusp instead of zeroing the image after resume in order to prevent someone from reading some confidential data from it in the future and it does not protect the image from being read by an unauthorized person before resume. The functionality it provides should really belong to the user space and will possibly be reimplemented after the swap-handling functionality of swsusp is moved to the user space. Signed-off-by:
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Ivan Kokshaysky authored
Kconfig tweaks and tons of deletions. Signed-off-by:
Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Christoph Hellwig <hch@lst.de> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by:
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Ivan Kokshaysky authored
Thanks to Christoph for doing most of the work. This allows automatic SMP IRQ affinity assignment other than default "all interrupts on all CPUs" which is rather expensive. This might be useful if the hardware can be programmed to distribute interrupts among different CPUs, like Alpha does. Signed-off-by:
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Shaohua Li authored
With physical CPU hotplug, the CPU is hot removed and it should not receive any interrupts. Disabling interrupt is much safer. This basically is what we do in ia64 & x86. Signed-off-by:
Shaohua Li <shaohua.li@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Ben Collins authored
Signed-off-by:
Ben Collins <bcollins@ubuntu.com> Signed-off-by:
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Vivek Goyal authored
o Currently, during kexec reboot, IOAPIC is re-programmed back to virtual wire mode if there was an i8259 connected to it. This enables getting timer interrupts in second kernel in legacy mode. o After putting into virtual wire mode, IOAPIC delivers the i8259 interrupts to CPU0. This works well for kexec but not for kdump as we might crash on a different CPU and second kernel will not see timer interrupts. o This patch modifies the redirection table entry to deliver the timer interrupts to the cpu we are rebooting (instead of hardcoding to zero). This ensures that second kernel receives timer interrupts even on a non-boot cpu. Signed-off-by:
Vivek Goyal <vgoyal@in.ibm.com> Cc: Andi Kleen <ak@muc.de> Cc: "Seth, Rohit" <rohit.seth@intel.com> Signed-off-by:
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Brian Gerst authored
GCC 4.1 gives the following warning: include/asm/mpspec.h:79: warning: `packed' attribute ignored for field of type `unsigned char' The packed attribute isn't really necessary anyways so just remove it. Signed-off-by:
Brian Gerst <bgerst@didntduck.org> Acked-by:
Dave Jones <davej@codemonkey.org.uk> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Larry Finger authored
When we re-calibrate the frequency, it is likely that an interrupt (as for example the main system clock) will be triggered by the system. Therefore the calibration may not be accurate. This will also provide a fix to bug #5266. Many thanks to Larry Finger for helping resolving this issue. Signed-off-by:
Bruno Ducrot <ducrot@poupinou.org> Cc: john stultz <johnstul@us.ibm.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by:
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Jordan Crouse authored
- Fix screen blanking on BIOSes that return APM_NOT_ENGAGED when APM enabled screen blanking is not turned on. The original code only tried to set the state on device 0x100, and then 0x1FF, and I added 0x101 to the mix too. - Clean up logic in apm_console_blank(). - Prevent the error message from printing out twice. Cc: Jordan Crouse <jordan.crouse@amd.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Jordan Crouse authored
Add support to hw_random for the Geode LX HRNG device. Signed-off-by:
Jordan Crouse <jordan.crouse@amd.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by:
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Jordan Crouse authored
Provide basic support for the AMD Geode GX and LX processors. Signed-off-by:
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Daniel Marjamaki authored
Removed the unused variable "rv". Signed-off-by:
Daniel Marjamaki <daniel.marjamaki@comhem.se> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
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Daniel Marjamaki authored
Removed the unused variable "rv". Signed-off-by:
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Stephen Hemminger authored
There is a single instruction on i386 to find largest set bit; so it makes sense to use it (like we use bfs for ffs()). Signed-off-by:
Stephen Hemminger <shemminger@osdl.org> Signed-off-by:
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Dave Jones authored
Missing newline in printk. Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Dave Jones authored
The 'make rodata read-only' patch in -mm exposes a latent bug in the 32-bit change_page_attr() function, which causes certain CPUs (Those with NX basically) to reboot instantly after pages are marked read-only. The same bug got fixed a while back on x86-64, but never got propagated to i386. Stuart Hayes from Dell also picked up on this last June, but it never got fixed, as the only thing affected by it aparently was the nvidia driver. Blatantly stealing description from his post.. "It doesn't appear to be fixed (in the i386 arch). The change_page_attr()/split_large_page() code will still still set all the 4K PTEs to PAGE_KERNEL (setting the _PAGE_NX bit) when a large page needs to be split. This wouldn't be a problem for the bulk of the kernel memory, but there are pages in the lower 4MB of memory that's free, and are part of large executable pages that also contain kernel code. If change_page_attr() is called on these, it will set the _PAGE_NX bit on the whole 2MB region that was covered by the large page, causing a large chunk of kernel code to be non-executable." Signed-off-by:
Arjan van de Ven <arjan@infradead.org> Signed-off-by:
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Ashok Raj authored
If we are using hotplug enabled kernel, then make bigsmp the default mode. Signed-off-by:
Ashok Raj <ashok.raj@intel.com> Signed-off-by:
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Ashok Raj authored
When we bring up a new CPU via INIT/startup IPI messages, the CPU that's coming up sends a xTPR message to the chipset. Intel chipsets (at least) don't provide any architectural guarantee on what the chipset will do with this message. For example, the E850x chipsets uses this xTPR message to interpret the interrupt operating mode of the platform. When the CPU coming online sends this message, it always indicates that it is in logical flat mode. For the CPU hotplug case, the platform may already be functioning in cluster APIC mode at this time, the chipset can get confused and mishandle I/O device and IPI interrupt routing. The situation eventually gets corrected when the new CPU sends another xTPR update when we switch it to cluster mode, but there's a window during which the chipset may be in an inconsistent state. This patch avoids this problem by using the flat physical interrupt delivery mode instead of cluster mode for bigsmp (>8 cpu) support. Signed-off-by:
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Anton Blanchard authored
On architectures that implement sparsemem but not discontigmem we want to be able to hide the flatmem option in some cases. On ppc64 for example, when we select NUMA we must not select flatmem. Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
Andy Whitcroft <apw@shadowen.org> Signed-off-by:
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Andy Whitcroft authored
Allow SPARSEMEM to be enabled on non-numa x86 systems. This is made dependant on EXPERIMENTAL also being set. When an in-tree user (such as simulated numa) exists it should be made dependant on that. The plan is to have no options and no selector as normal when !EXPERIMENTAL. When EXPERIMENTAL we enable the FLATMEM and SPARSEMEM options for X86_PC whilst maintaining DISCONTIGMEM and SPARSEMEM for NUMA. Signed-off-by:
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Arjan van de Ven authored
Mark some key kernel datastructures readonly. This patch was previously posted on Jun 28th but was back then not merged because nothing was enforcing rodata anyway.. well that changed now :) Patch by Christoph Lameter <christoph@lameter.com> and Dave Jones <davej@redhat.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Arjan van de Ven authored
x86-64 specific parts to make the .rodata section read only Signed-off-by:
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Arjan van de Ven authored
Bug fix required for the .rodata work on x86-64: when change_page_attr() and friends need to break up a 2Mb page into 4Kb pages, it always set the NX bit on the PMD, which causes the cpu to consider the entire 2Mb region to be NX regardless of the actual PTE perms. This is fine in general, with one big exception: the 2Mb page that covers the last part of the kernel .text! The fix is to not invent a new permission for the new PMD entry, but to just inherit the existing one minus the PSE bit. Signed-off-by:
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Arjan van de Ven authored
x86 specific parts to make the .rodata section read only Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Arjan van de Ven authored
Generic prep-work for marking the .rodata section readonly: * Align the rodata section at 4Kb boundary * call the mark_rodata_ro() function when available Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
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David Howells authored
Make i386's find_first_bit() use an unsigned integer as a counter to avoid getting warnings when -Wsign-compare is given. Signed-Off-By:
David Howells <dhowells@redhat.com> Signed-off-by:
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