- 13 3月, 2010 40 次提交
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由 Daisuke Nishimura 提交于
Try to reduce overheads in moving swap charge by: - Adds a new function(__mem_cgroup_put), which takes "count" as a arg and decrement mem->refcnt by "count". - Removed res_counter_uncharge, css_put, and mem_cgroup_put from the path of moving swap account, and consolidate all of them into mem_cgroup_clear_mc. We cannot do that about mc.to->refcnt. These changes reduces the overhead from 1.35sec to 0.9sec to move charges of 1G anonymous memory(including 500MB swap) in my test environment. Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
This patch is another core part of this move-charge-at-task-migration feature. It enables moving charges of anonymous swaps. To move the charge of swap, we need to exchange swap_cgroup's record. In current implementation, swap_cgroup's record is protected by: - page lock: if the entry is on swap cache. - swap_lock: if the entry is not on swap cache. This works well in usual swap-in/out activity. But this behavior make the feature of moving swap charge check many conditions to exchange swap_cgroup's record safely. So I changed modification of swap_cgroup's recored(swap_cgroup_record()) to use xchg, and define a new function to cmpxchg swap_cgroup's record. This patch also enables moving charge of non pte_present but not uncharged swap caches, which can be exist on swap-out path, by getting the target pages via find_get_page() as do_mincore() does. [kosaki.motohiro@jp.fujitsu.com: fix ia64 build] [akpm@linux-foundation.org: fix typos] Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
This move-charge-at-task-migration feature has extra charges on "to"(pre-charges) and "from"(left-over charges) during moving charge. This means unnecessary oom can happen. This patch tries to avoid such oom. Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
Try to reduce overheads in moving charge by: - Instead of calling res_counter_uncharge() against the old cgroup in __mem_cgroup_move_account() everytime, call res_counter_uncharge() at the end of task migration once. - removed css_get(&to->css) from __mem_cgroup_move_account() because callers should have already called css_get(). And removed css_put(&to->css) too, which was called by callers of move_account on success of move_account. - Instead of calling __mem_cgroup_try_charge(), i.e. res_counter_charge(), repeatedly, call res_counter_charge(PAGE_SIZE * count) in can_attach() if possible. - Instead of calling css_get()/css_put() repeatedly, make use of coalesce __css_get()/__css_put() if possible. These changes reduces the overhead from 1.7sec to 0.6sec to move charges of 1G anonymous memory in my test environment. Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
This patch is the core part of this move-charge-at-task-migration feature. It implements functions to move charges of anonymous pages mapped only by the target task. Implementation: - define struct move_charge_struct and a valuable of it(mc) to remember the count of pre-charges and other information. - At can_attach(), get anon_rss of the target mm, call __mem_cgroup_try_charge() repeatedly and count up mc.precharge. - At attach(), parse the page table, find a target page to be move, and call mem_cgroup_move_account() about the page. - Cancel all precharges if mc.precharge > 0 on failure or at the end of task move. [akpm@linux-foundation.org: a little simplification] Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
In current memcg, charges associated with a task aren't moved to the new cgroup at task migration. Some users feel this behavior to be strange. These patches are for this feature, that is, for charging to the new cgroup and, of course, uncharging from the old cgroup at task migration. This patch adds "memory.move_charge_at_immigrate" file, which is a flag file to determine whether charges should be moved to the new cgroup at task migration or not and what type of charges should be moved. This patch also adds read and write handlers of the file. This patch also adds no-op handlers for this feature. These handlers will be implemented in later patches. And you cannot write any values other than 0 to move_charge_at_immigrate yet. Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Li Zefan 提交于
Don't call get_pid_ns() before we locate/alloc the ns. Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com> Cc: Serge Hallyn <serue@us.ibm.com> Acked-by: NPaul Menage <menage@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ben Blum 提交于
Modify the Block I/O cgroup subsystem to be able to be built as a module. As the CFQ disk scheduler optionally depends on blk-cgroup, config options in block/Kconfig, block/Kconfig.iosched, and block/blk-cgroup.h are enhanced to support the new module dependency. Signed-off-by: NBen Blum <bblum@andrew.cmu.edu> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kirill A. Shutemov 提交于
Add a forgotten item into CONTENTS. Signed-off-by: NKirill A. Shutemov <kirill@shutemov.name> Acked-by: NPaul Menage <menage@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ben Blum 提交于
Provides support for unloading modular subsystems. This patch adds a new function cgroup_unload_subsys which is to be used for removing a loaded subsystem during module deletion. Reference counting of the subsystems' modules is moved from once (at load time) to once per attached hierarchy (in parse_cgroupfs_options and rebind_subsystems) (i.e., 0 or 1). Signed-off-by: NBen Blum <bblum@andrew.cmu.edu> Acked-by: NLi Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ben Blum 提交于
Add interface between cgroups subsystem management and module loading This patch implements rudimentary module-loading support for cgroups - namely, a cgroup_load_subsys (similar to cgroup_init_subsys) for use as a module initcall, and a struct module pointer in struct cgroup_subsys. Several functions that might be wanted by modules have had EXPORT_SYMBOL added to them, but it's unclear exactly which functions want it and which won't. Signed-off-by: NBen Blum <bblum@andrew.cmu.edu> Acked-by: NLi Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ben Blum 提交于
This patch series provides the ability for cgroup subsystems to be compiled as modules both within and outside the kernel tree. This is mainly useful for classifiers and subsystems that hook into components that are already modules. cls_cgroup and blkio-cgroup serve as the example use cases for this feature. It provides an interface cgroup_load_subsys() and cgroup_unload_subsys() which modular subsystems can use to register and depart during runtime. The net_cls classifier subsystem serves as the example for a subsystem which can be converted into a module using these changes. Patch #1 sets up the subsys[] array so its contents can be dynamic as modules appear and (eventually) disappear. Iterations over the array are modified to handle when subsystems are absent, and the dynamic section of the array is protected by cgroup_mutex. Patch #2 implements an interface for modules to load subsystems, called cgroup_load_subsys, similar to cgroup_init_subsys, and adds a module pointer in struct cgroup_subsys. Patch #3 adds a mechanism for unloading modular subsystems, which includes a more advanced rework of the rudimentary reference counting introduced in patch 2. Patch #4 modifies the net_cls subsystem, which already had some module declarations, to be configurable as a module, which also serves as a simple proof-of-concept. Part of implementing patches 2 and 4 involved updating css pointers in each css_set when the module appears or leaves. In doing this, it was discovered that css_sets always remain linked to the dummy cgroup, regardless of whether or not any subsystems are actually bound to it (i.e., not mounted on an actual hierarchy). The subsystem loading and unloading code therefore should keep in mind the special cases where the added subsystem is the only one in the dummy cgroup (and therefore all css_sets need to be linked back into it) and where the removed subsys was the only one in the dummy cgroup (and therefore all css_sets should be unlinked from it) - however, as all css_sets always stay attached to the dummy cgroup anyway, these cases are ignored. Any fix that addresses this issue should also make sure these cases are addressed in the subsystem loading and unloading code. This patch: Make subsys[] able to be dynamically populated to support modular subsystems This patch reworks the way the subsys[] array is used so that subsystems can register themselves after boot time, and enables the internals of cgroups to be able to handle when subsystems are not present or may appear/disappear. Signed-off-by: NBen Blum <bblum@andrew.cmu.edu> Acked-by: NLi Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
Current css_get() and css_put() increment/decrement css->refcnt one by one. This patch add a new function __css_get(), which takes "count" as a arg and increment the css->refcnt by "count". And this patch also add a new arg("count") to __css_put() and change the function to decrement the css->refcnt by "count". These coalesce version of __css_get()/__css_put() will be used to improve performance of memcg's moving charge feature later, where instead of calling css_get()/css_put() repeatedly, these new functions will be used. No change is needed for current users of css_get()/css_put(). Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: NPaul Menage <menage@google.com> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daisuke Nishimura 提交于
Add cancel_attach() operation to struct cgroup_subsys. cancel_attach() can be used when can_attach() operation prepares something for the subsys, but we should rollback what can_attach() operation has prepared if attach task fails after we've succeeded in can_attach(). Signed-off-by: NDaisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: NLi Zefan <lizf@cn.fujitsu.com> Reviewed-by: NPaul Menage <menage@google.com> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dave Young 提交于
Gmail web gui does not work for sending patches now even with firefox "view source with" extension. It will use windows style line breaks to wrap lines automatically when sening email. Rewrite the gmail web gui part of email client documentation. Signed-off-by: NDave Young <hidave.darkstar@gmail.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Martin Bligh <mbligh@mbligh.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
scripts/kernel-doc mishandles a function that has a multi-line function short description and no function parameters. The observed problem was from drivers/scsi/scsi_netlink.c: /** * scsi_netlink_init - Called by SCSI subsystem to intialize * the SCSI transport netlink interface * **/ kernel-doc treated the " * " line as a Description: section with only a newline character in the Description contents. This caused output_highlight() to complain: "output_highlight got called with no args?", plus produce a perl call stack backtrace. The fix is just to ignore Description sections if they only contain "\n". Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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x86/Voyager support has been removed a year ago. Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com> Inspired-by: NJonathan Corbet <corbet@lwn.net> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Add header file requirements. Compliments of Stephen Rothwell. Stephen calls this Rule #1, so I put it there, but I didn't want to demote any of the others in the list, so I made one of them number 2b. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Documentation/vm/: Expose example and tool source files in the Documentation/ directory in their own files instead of being buried (almost hidden) in readme/txt files. This should help to prevent bitrot. This will make them more visible/usable to users who may need to use them, to developers who may need to test with them, and to anyone who would fix/update them if they were more visible. Also, if any of these possibly should not be in the kernel tree at all, it will be clearer that they are here and we can discuss if they should be removed. Also build the recently-added map_hugetlb.c. Make several functions static to prevent linker warnings. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Acked-by: NEric B Munson <ebmunson@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Make dnotify_test.c source file and add it to Makefile so that bitrot can be prevented. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Documentation/laptops/laptop-mode.txt: Expose example and tool source files in the Documentation/ directory in their own files instead of being buried (almost hidden) in readme/txt files. This should help to prevent bitrot. This will make them more visible/usable to users who may need to use them, to developers who may need to test with them, and to anyone who would fix/update them if they were more visible. Also, if any of these possibly should not be in the kernel tree at all, it will be clearer that they are here and we can discuss if they should be removed. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Documentation/timers/hpet.txt: Expose example and tool source files in the Documentation/timers/ directory in their own files instead of being buried (almost hidden) in readme/txt files. This should help to prevent bitrot. This will make them more visible/usable to users who may need to use them, to developers who may need to test with them, and to anyone who would fix/update them if they were more visible. Also, if any of these possibly should not be in the kernel tree at all, it will be clearer that they are here and we can discuss if they should be removed. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Evgeniy Dushistov 提交于
Alex Viskovatoff let me know that after copying data to solaris's ufs from linux, solaris's fsck sees some errors in cylinder summary information. This is because of solaris expects find some data on another places, then curernt implementation save it. This patch fixes this issue. It is tested by me, and also Alex reported that it works for him. Signed-off-by: NEvgeniy Dushistov <dushistov@mail.ru> Reported-by: NAlex Viskovatoff <viskovatoff@imap.cc> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alex Viskovatoff 提交于
Recent releases of Solaris set the fs_clean state of an unmounted UFS file system as FSLOG ("logging fs"). However, the Linux kernel currently does not recognize the value which represents this state. Thus, attempting to mount such a file system rw produces the message kernel: ufs_read_super: can't grok fs_clean 0xfffffffd and the file system is mounted read-only. This patch makes the kernel recognize that value. Signed-off-by: NAlex Viskovatoff <viskovatoff@imap.cc> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrew Morton 提交于
- fix switch statement layout - fix whitespace stuff - fix comment layout - remove unneeded inlining - use __weak - remove trailing whitespace - move uncached_access() inside `#ifndef __HAVE_PHYS_MEM_ACCESS_PROT' - it is otherwise unused. Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Wu Fengguang 提交于
So as to return a uniform error -EOVERFLOW instead of a random one: # kmem-seek 0xfffffffffffffff0 seek /dev/kmem: Device or resource busy # kmem-seek 0xfffffffffffffff1 seek /dev/kmem: Block device required Suggested by OGAWA Hirofumi. Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reviewed-by: NKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: NWu Fengguang <fengguang.wu@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Huang Weiyi 提交于
Remove duplicated #include('s) in drivers/video/bfin-lq035q1-fb.c Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ben Hutchings 提交于
The function name must be followed by a space, hypen, space, and a short description. Signed-off-by: NBen Hutchings <ben@decadent.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Egger 提交于
There was some conditionalizing for the LWMON5 boards in kernel source. However infrastructure for enabling this isn't here so probably the special case code can go as well. Signed-off-by: NChristoph Egger <siccegge@stud.informatik.uni-erlangen.de> Acked-by: NAlexander Shishkin <virtuoso@slind.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Joe Perches 提交于
String constants that are continued on subsequent lines with \ will cause spurious whitespace in the resulting output. Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Wang Qiang 提交于
An LCD controller driver for nuc900s. The Linux LOGO is just fine and the FB-Test application was ok, too. Signed-off-by: NWang Qiang <rurality.linux@gmail.com> Cc: Wang Zongshun <mcuos.com@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Christoph Egger 提交于
The config Option FB_SOFT_BUFFER was removed in c465e05a ("fbcon/fbdev: Move softcursor out of fbdev to fbcon"). While moving to fbcon this single driver has it left as a select in KConfig / #ifdef in source. This last occurence is removed here so the option is really gone Signed-off-by: NChristoph Egger <siccegge@stud.informatik.uni-erlangen.de> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Maik Broemme 提交于
It seems that Sylvain no longer maintain the intelfb driver. Two weeks ago I had a short mail conversation with Jean regarding who can replace him. Well I will do it, because I know the driver and use it very often. Attached is a patch which update the maintainer file to make bug reporting easier. Signed-off-by: NMaik Broemme <mbroemme@plusserver.de> Sylvain Meyer <sylvain.meyer@worldonline.fr> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Cc: Dave Airlie <airlied@linux.ie> Cc: Eric Anholt <eric@anholt.net> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jaya Kumar 提交于
This patch adds waveform storing capability to broadsheetfb. It uses the firmware class to retrieve the waveform, and the request to initiate the waveform storing is done via a driver sysfs entry, loadstore_waveform. Broadsheet is a framebuffer device. It is slightly different from a typical framebuffer controller that drives a normal TFT-LCD display. Most E-Ink display panels require a waveform in order to function. That is, in order to drive the state of a pixel to black, gray, or white, a specific waveform is utilized. Basically, that waveform represents the specific E-field wiggling needed to get the pixel to its optimal state given current temperature, and its previous state. TN/IPS-LCDs use a similar concept but the driving waveform is sufficiently simple that it is internalized in the TFT source/gate driver. These E-Ink waveforms are specific to a production batch. That is, a batch of display films are produced, then they get characterized and a waveform is generated for that batch. Broadsheet, typically, is attached to its private SPI flash which is then flashed with this waveform. Users won't be able to see the waveform and typically won't ever need to know about it. If however, the display panel attached to broadsheet is changed out, then they will need to update their waveform. That would typically be done at a factory or repair facility rather than by a user. [akpm@linux-foundation.org: fix printk warning] Signed-off-by: NJaya Kumar <jayakumar.lkml@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jaya Kumar 提交于
Allow boards with GP-MMIO controllers to provide hooks to broadsheetfb in order to offload cmd/data writes and data reads instead of relying only on host based GPIO wiggling. Signed-off-by: NJaya Kumar <jayakumar.lkml@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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Add support for the color depth 15 on IGA1 and 30 on IGA1 and IGA2. To allow the usage of those the driver now refuses color depth that are totally off and otherwise the selection in viafb_check_var is used. Therefore the first call to this for the first framebuffer was delayed a bit. It only enables the new formats if they are requested exactly (viafb_bpp=15|30). As this is a new feature, no regressions are expected. The color depth 15 was successfully tested. Didn't get anything usable for 30 but that might be the programs fault. I would like to get some feedback whether it works as expected or not if somebody knows a program/configuration where it should. Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Scott Fang <ScottFang@viatech.com.cn> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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This is a rewritten version of viafb_setcolreg. The hardware register writes were split up and moved to hw.c where they belong as this is really low level stuff. It was made dual fb aware. Furthermore viafb_setcmap was removed as the problem with 8bpp originated from a bug in writing multiple color registers at once. The removal of viafb_setcmap might introduce a small performance regression but its certainly better to receive the correct result a bit slower than a garbled picture fast. It should give us a working 8bpp mode and is more extensible than the old hardcoded code. No other regressions are expected but as the hardware might be a bit picky it might cause some regressions in 8bpp mode on some hardware although I doubt that. Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Scott Fang <ScottFang@viatech.com.cn> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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Do not require the virtual_xres to be aligned as line length is for such purposes. Calculate always the smallest line length required. Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Scott Fang <ScottFang@viatech.com.cn> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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Make color checking a bit more tolerant in what values it allows and more fine grained to later support 15 and 30 bits formats. It splits the filling of the color information in var to a seperate function and sets some color related values in var that where previously untouched. This could be a bug fix but at least I don't know any applications that was fooled by not correctly setting the fields in var. At least no regressions are expected. Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Scott Fang <ScottFang@viatech.com.cn> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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Move some variables closer to their usage. Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Scott Fang <ScottFang@viatech.com.cn> Cc: Joseph Chan <JosephChan@via.com.tw> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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