- 19 Apr, 2005 40 commits
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Hugh Dickins authored
ia64 and sparc64 hurriedly had to introduce their own variants of pgd_addr_end, to leapfrog over the holes in their virtual address spaces which the final clear_page_range suddenly presented when converted from pgd_index to pgd_addr_end. But now that free_pgtables respects the vma list, those holes are never presented, and the arch variants can go. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Hugh Dickins authored
ia64 and ppc64 had hugetlb_free_pgtables functions which were no longer being called, and it wasn't obvious what to do about them. The ppc64 case turns out to be easy: the associated tables are noted elsewhere and freed later, safe to either skip its hugetlb areas or go through the motions of freeing nothing. Since ia64 does need a special case, restore to ppc64 the special case of skipping them. The ia64 hugetlb case has been broken since pgd_addr_end went in, though it probably appeared to work okay if you just had one such area; in fact it's been broken much longer if you consider a long munmap spanning from another region into the hugetlb region. In the ia64 hugetlb region, more virtual address bits are available than in the other regions, yet the page tables are structured the same way: the page at the bottom is larger. Here we need to scale down each addr before passing it to the standard free_pgd_range. Was about to write a hugely_scaled_down macro, but found htlbpage_to_page already exists for just this purpose. Fixed off-by-one in ia64 is_hugepage_only_range. Uninline free_pgd_range to make it available to ia64. Make sure the vma-gathering loop in free_pgtables cannot join a hugepage_only_range to any other (safe to join huges? probably but don't bother). Signed-off-by:
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Hugh Dickins authored
There's only one usage of MM_VM_SIZE(mm) left, and it's a troublesome macro because mm doesn't contain the (32-bit emulation?) info needed. But it too is only needed because we ignore the end from the vma list. We could make flush_pgtables return that end, or unmap_vmas. Choose the latter, since it's a natural fit with unmap_mapping_range_vma needing to know its restart addr. This does make more than minimal change, but if unmap_vmas had returned the end before, this is how we'd have done it, rather than storing the break_addr in zap_details. unmap_vmas used to return count of vmas scanned, but that's just debug which hasn't been useful in a while; and if we want the map_count 0 on exit check back, it can easily come from the final remove_vm_struct loop. Signed-off-by:
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Hugh Dickins authored
Recent woes with some arches needing their own pgd_addr_end macro; and 4-level clear_page_range regression since 2.6.10's clear_page_tables; and its long-standing well-known inefficiency in searching throughout the higher-level page tables for those few entries to clear and free: all can be blamed on ignoring the list of vmas when we free page tables. Replace exit_mmap's clear_page_range of the total user address space by free_pgtables operating on the mm's vma list; unmap_region use it in the same way, giving floor and ceiling beyond which it may not free tables. This brings lmbench fork/exec/sh numbers back to 2.6.10 (unless preempt is enabled, in which case latency fixes spoil unmap_vmas throughput). Beware: the do_mmap_pgoff driver failure case must now use unmap_region instead of zap_page_range, since a page table might have been allocated, and can only be freed while it is touched by some vma. Move free_pgtables from mmap.c to memory.c, where its lower levels are adapted from the clear_page_range levels. (Most of free_pgtables' old code was actually for a non-existent case, prev not properly set up, dating from before hch gave us split_vma.) Pass mmu_gather** in the public interfaces, since we might want to add latency lockdrops later; but no attempt to do so yet, going by vma should itself reduce latency. But what if is_hugepage_only_range? Those ia64 and ppc64 cases need careful examination: put that off until a later patch of the series. What of x86_64's 32bit vdso page __map_syscall32 maps outside any vma? And the range to sparc64's flush_tlb_pgtables? It's less clear to me now that we need to do more than is done here - every PMD_SIZE ever occupied will be flushed, do we really have to flush every PGDIR_SIZE ever partially occupied? A shame to complicate it unnecessarily. Special thanks to David Miller for time spent repairing my ceilings. Signed-off-by:
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Linus Torvalds authored
for 13 driver core, sysfs, and debugfs fixes.
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Linus Torvalds authored
for 11 aoe bugfix patches.
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Linus Torvalds authored
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Linus Torvalds authored
Yah, it does work to merge. Knock wood.
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ecashin@coraid.com authored
I can't use list.h, since sk_buff doesn't have a list_head but instead has two struct sk_buff pointers, and I want to avoid any extra memory allocation. send outgoing packets in order Signed-off-by:
Ed L. Cashin <ecashin@coraid.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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ecashin@coraid.com authored
add support for disk statistics Signed-off-by:
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ecashin@coraid.com authored
add note about the need for deadlock-free sk_buff allocation Signed-off-by:
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ecashin@coraid.com authored
document env var for specifying number of partitions per dev Signed-off-by:
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ecashin@coraid.com authored
Alexey Dobriyan sparse cleanup Signed-off-by:
Alexey Dobriyan <adobriyan@mail.ru> Signed-off-by:
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ecashin@coraid.com authored
don't try to free null bufpool Signed-off-by:
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ecashin@coraid.com authored
handle distros that have a udev rules file instead of dir Signed-off-by:
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ecashin@coraid.com authored
update driver version to 6 Signed-off-by:
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ecashin@coraid.com authored
allow multiple aoe devices with same MAC addr Signed-off-by:
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ecashin@coraid.com authored
remove too-low cap on minor number Signed-off-by:
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kay.sievers@vrfy.org authored
kobject_add() and kobject_del() don't emit hotplug events anymore. We need to do it ourselves now. Signed-off-by:
Kay Sievers <kay.sievers@vrfy.org> Signed-off-by:
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kay.sievers@vrfy.org authored
kobject_add() and kobject_del() don't emit hotplug events anymore. We need to do it ourselves now. Signed-off-by:
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kay.sievers@vrfy.org authored
kobject_add() and kobject_del() don't emit hotplug events anymore. Do it ourselves if we are finished populating the device directory. Signed-off-by:
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kay.sievers@vrfy.org authored
kobject_add() and kobject_del() don't emit hotplug events anymore. Do it ourselves if we are finished populating the device directory. Signed-off-by:
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kay.sievers@vrfy.org authored
kobject_add() and kobject_del() don't emit hotplug events anymore. Do it ourselves if we are finished populating the device directory. Signed-off-by:
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kay.sievers@vrfy.org authored
kobject_add() and kobject_del() don't emit hotplug events anymore. The user should do it itself if it has finished populating the device directory. Signed-off-by:
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Michal Ostrowski authored
- Fix prototypes for debugfs functions (in configurations where debugfs is disabled). Signed-off-by:
Michal Ostrowski <mostrows@speakeasy.net> Signed-off-by:
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Roland Dreier authored
The current <linux/debugfs.h> include file is a little fragile in that it is not self-contained and hence may cause compile warnings or errors depending on the files included before it, the kernel config and the architecture. This patch makes things a little more robust by: - including <linux/types.h> to get definitions of u32, mode_t, and so on. - forward declaring struct file_operations. - including <linux/err.h> when CONFIG_DEBUG_FS is not set The last change is particularly useful, as a kernel developer is likely to build with debugfs always enabled and never see the build breakage cased if debugfs is disabled. Signed-off-by:
Roland Dreier <roland@topspin.com> Signed-off-by:
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Steven Cole authored
Without the attached patch, the ver_linux script gives the following if udev utils are not present. ./scripts/ver_linux: line 90: udevinfo: command not found The patch causes ver_linux to be silent in the case of no udevinfo command. Signed-off-by:
Steven Cole <elenstev@mesatop.com> Signed-off-by:
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Robert Schwebel authored
platform_add_devices can be used from within modules, so it should be exported. This can for example happen if you have hotpluggable firmware in an FPGA on a system on chip processor; in our case the FPGA is probed for devices and the FPGA base code registers the devices it has found with the kernel. (akpm: I think this is reasonable from a licensing POV: it's unlikely that anyone would be interested in merging such specialised modules into mainline, and it's a GPL export). Signed-off-by:
Robert Schwebel <r.schwebel@pengutronix.de> Signed-off-by:
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Kay Sievers authored
sysfs: allow changing the permissions for already created attributes Signed-off-by:
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kay.sievers@vrfy.org authored
On Tue, 2005-03-15 at 09:25 +0100, Hannes Reinecke wrote: > The current implementation of the firmware class breaks a fundamental > assumption in udevd: that the physical device can be initialised fully > prior to executing the next event for that device. Here we add a TIMEOUT value to the hotplug environment of the firmware requesting event. I will adapt udevd not to wait for anything else, if it finds a TIMEOUT key. Signed-off-by:
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gregkh@suse.de authored
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minyard@acm.org authored
Add some documentation for krefs. Signed-off-by:
Corey Minyard <minyard@acm.org> Signed-off-by:
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Jean Delvare authored
The it87 and via686a hardware monitoring drivers each create a sysfs file named "alarms" in R/W mode, while they should really create it in read-only mode. Since we don't provide a store function for these files, write attempts to these files will do something undefined (I guess) and bad (I am sure). My own try resulted in a locked terminal (where I attempted the write) and a 100% CPU load until next reboot. As a side note, wouldn't it make sense to check, when creating sysfs files, that readable files have a non-NULL show method, and writable files have a non-NULL store method? I know drivers are not supposed to do stupid things, but there is already a BUG_ON for several conditions in sysfs_create_file, so maybe we could add two more? Signed-off-by:
Jean Delvare <khali@linux-fr.org> Signed-off-by:
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Jean Delvare authored
Here comes a small cleanup patch for the via686a driver. I noticed the following two non-fatal problems: 1* The device parent is explicitely set, but it's not needed because the i2c core will do as the client is registered. 2* snprintf is used where strlcpy would suffice. Fixing them brings the via686a driver in line with what other similar drivers do. Signed-off-by:
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johnpol@2ka.mipt.ru authored
w1 ID is only 8 bytes long. Signed-off-by:
Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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johnpol@2ka.mipt.ru authored
Real fix for big endian machines - crc must be calculated using little endian byte order. Signed-off-by:
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James Bottomley authored
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Viktor A. Danilov authored
[PATCH] USB: fix AIPTEK input doesn`t register `device` & `driver` section in sysfs (/sys/class/input/event#) PROBLEM: aiptek input doesn`t register `device` & `driver` section in sysfs (/sys/class/input/event#) REASON: `dev` - field not filled... SOLUTION: in linux/drivers/usb/input/aiptek.c write aiptek->inputdev.dev = &intf->dev; before calling input_register_device(&aiptek->inputdev); From: "Viktor A. Danilov" <__die@mail.ru> Signed-off-by: -
David Brownell authored
Updates to the Ethernet/RNDIS gadget driver (mostly for RNDIS): - Fix brown-paper bag goof with RNDIS packet TX ... the wrong length field got set, so Windows would ignore data packets it received. - More consistent handling of CDC output filters (but not yet hooking things up so RNDIS uses the mechanism). - Zerocopy RX for RNDIS packets too (saving CPU cycles). - Use the pre-allocated interrupt/status request and buffer, rather than allocating and freeing one of each every few seconds (which could fail). - Some more "sparse" tweaks, making both dual-speed and single-speed configurations happier. - RNDIS speeds are reported in units of 100bps, not bps. Plus two minor cleanups (whitespace, messaging). Signed-off-by:David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Jesper Juhl authored
Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*, there's no need to check a pointer for NULL before calling kfree() on it. Signed-off-by:
Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by:
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