- 26 Jul, 2011 40 commits
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Amerigo Wang authored
We presently define all kinds of notifiers in notifier.h. This is not necessary at all, since different subsystems use different notifiers, they are almost non-related with each other. This can also save much build time. Suppose I add a new netdevice event, really I don't have to recompile all the source, just network related. Without this patch, all the source will be recompiled. I move the notify events near to their subsystem notifier registers, so that they can be found more easily. This patch: It is not necessary to share the same notifier.h. Signed-off-by:
WANG Cong <amwang@redhat.com> Cc: David Miller <davem@davemloft.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Donggeun Kim authored
The FSA9480 is a USB port accessory detector and switch. This patch adds support the FSA9480 USB Switch. [akpm@linux-foundation.org: make a couple of things static] Signed-off-by:
Donggeun Kim <dg77.kim@samsung.com> Signed-off-by:
Minkyu Kang <mk7.kang@samsung.com> Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Philip A. Prindeville authored
As stated in drivers/mfd/cs5535-mfd.c, the mfd driver exposes the BARs which then make the GPIO, MFGPT, ACPI, etc. all visible to the system. So the dependencies of the MFGPT stuff have changed, and most people expect Kconfig to bring in the necessary dependencies. Without them, the module fails to load and most people don't understand why because the details of the rewrite aren't captured anywhere most people who know to look. This dependency needs to be reflected in Kconfig. Signed-off-by:
Philip A. Prindeville <philipp@redfish-solutions.com> Acked-by:
Alexandros C. Couloumbis <alex@ozo.com> Acked-by:
Andres Salomon <dilinger@queued.net> Cc: <stable@kernel.org> Signed-off-by:
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Arnaud Lacombe authored
Fixes WARNING: vmlinux.o(.data+0x15d3ac): Section mismatch in reference from the variable pci_eisa_driver to the function .init.text:pci_eisa_init() The variable pci_eisa_driver references the function __init pci_eisa_init() If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console Signed-off-by:
Arnaud Lacombe <lacombar@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by:
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Arnaud Lacombe authored
Unexpose to userland the following macros - __FUNCTION__ - NUMA_BUILD - COMPACTION_BUILD - REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD Signed-off-by:
WANG Cong <xiyou.wangcong@gmail.com> Cc: Michal Marek <mmarek@suse.cz> Signed-off-by:
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WANG Cong authored
Fix the warning: usr/include/linux/kernel.h:65: userspace cannot reference function or variable defined in the kernel As Michal noted, BUILD_BUG_ON stuffs should be moved under #ifdef __KERNEL__. Signed-off-by:
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Uwe Kleine-König authored
Resource definitions that just define start, end and flags = IORESOURCE_MEM or IORESOURCE_IRQ (with start=end) are quite common. So introduce a shortcut for them. For completeness add macros for IORESOURCE_DMA and IORESOURCE_IO, too and also make available a set of macros to specify named resources of all types which are less common. Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Maxin B John authored
devres uses the pointer value as key after it's freed, which is safe but triggers spurious use-after-free warnings on some static analysis tools. Rearrange code to avoid such warnings. Signed-off-by:
Maxin B. John <maxin.john@gmail.com> Reviewed-by:
Rolf Eike Beer <eike-kernel@sf-tec.de> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Mike Frysinger authored
This header isn't exported to user-space, and even if it was, the __KERNEL__ check covers the entire file, so we'd get a useless stub in the first place. So punt it. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Rakib Mullick authored
Signed-off-by:
Rakib Mullick <rakib.mullick@gmail.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: David Airlie <airlied@linux.ie> Cc: Tejun Heo <tj@kernel.org> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Richard Weinberger authored
GCC 4.6's -Wunused-but-set-variable found some dead code. Signed-off-by:
Richard Weinberger <richard@nod.at> Signed-off-by:
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Richard Weinberger authored
Linux can have pids up to 4*1024*1024. To handle such huge numbers pid_buf needs to be larger. Reported-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Richard Weinberger authored
Until now UML had no x86_64 vDSO. So glibc always used the vsyscall page for gettimeday() and friends. Calls to gettimeday() returned falsely the host time and confused some programs. This patch adds a vDSO which turns all __vdso_* calls into a system call so that UML can trap them. As glibc still uses the vsyscall page for static binaries this patch improves the situation only for dynamic binaries. Signed-off-by:
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Richard Weinberger authored
Implement arch_vma_name() and make get_gate_vma(), in_gate_area() and in_gate_area_no_mm() a nop. We need arch_vma_name() to support vDSO. Signed-off-by:
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Richard Weinberger authored
When UML is unable to reuse the host's vDSO FIXADDR_USER_START is zero. To handle this special case correclty we have to implement custom gate area helper methods. Signed-off-by:
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Richard Weinberger authored
Reusing the host's vDSO makes only sense on x86_32. Signed-off-by:
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Davidlohr Bueso authored
When creating the temp file there's a memory and file descriptor leak upon error. Signed-off-by:
Davidlohr Bueso <dave@gnu.org> Signed-off-by:
Vitaliy Ivanov <vitalivanov@gmail.com> Signed-off-by:
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Vitaliy Ivanov authored
Do not free memory when you failed to allocate it. Signed-off-by:
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Vitaliy Ivanov authored
Fix this warning: arch/um/os-Linux/helper.c: In function `helper_child': arch/um/os-Linux/helper.c:38:7: warning: ignoring return value of `write', declared with attribute warn_unused_result [richard@nod.at: happens only with -D_FORTIFY_SOURCE=2] Signed-off-by:
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Vitaliy Ivanov authored
Fix this warning: arch/um/drivers/cow_user.c: In function `absolutize': arch/um/drivers/cow_user.c:189:7: warning: ignoring return value of `chdir', declared with attribute warn_unused_result [richard@nod.at: happens only with -D_FORTIFY_SOURCE=2] Signed-off-by:
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Vitaliy Ivanov authored
Perform memory cleanup on exit. On receiving invalid 'pid' we still should clean 'output' variable. Signed-off-by:
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Geert Uytterhoeven authored
Commit 0954828f ("kconfig: replace KERNELVERSION usage by the mainmenu's prompt") made the kernel version disappear from the generated .config file when configuring for UML. As UML's Kconfig doesn't have a mainmenu, kconfig falls back to the default string "Linux Kernel Configuration". Add a suitable mainmenu to the main UML Kconfig file to fix this. Signed-off-by:
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Richard Weinberger authored
To make netconsole usable on UML, its ethernet driver needs netpoll support. Signed-off-by:
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Richard Weinberger authored
When UML is compiled with _FORTIFY_SOURCE we have to export all _chk() functions which are used in modules. For now it's only the case for __sprintf_chk(). Tested-by:
Florian Fainelli <florian@openwrt.org> Reported-by:
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Richard Weinberger authored
Both sys-i386 and sys-x86_64 support now ndelay(). The delay functions are based on arch/x86/lib/delay.c. Signed-off-by:
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Mathias Krause authored
The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by:
Mathias Krause <minipli@googlemail.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by:
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Richard Weinberger authored
There is no need to define VM_{STACK,DATA}_DEFAULT_FLAGS as variable. It's also useless to test for TIF_IA32 as 64bit UML has no IA32 emulation. Signed-off-by:Randy Dunlap <rdunlap@xenotime.net> Cc: Michal Hocko <mhocko@suse.cz> Signed-off-by:
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Mathias Krause authored
The address limit is already set in flush_old_exec() so those calls to set_fs(USER_DS) are redundant. Signed-off-by:
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WANG Cong authored
Fix some harmless warnings such as arch/cris/arch-v32/mach-a3/pinmux.c:273: warning: ISO C90 forbids mixed declarations and code: Signed-off-by:
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Mathias Krause authored
The address limit is already set in flush_old_exec() so those calls to set_fs(USER_DS) are redundant. Signed-off-by:
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Mathias Krause authored
The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by:
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Mathias Krause authored
The address limit is already set in flush_old_exec() so this set_fs(USER_DS) is redundant. Signed-off-by:
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Mathias Krause authored
The address limit is already set in flush_old_exec() so those calls to set_fs(USER_DS) are redundant. Signed-off-by:
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Wu Fengguang authored
NR_WRITTEN is now accounted at block IO enqueue time, which is not very accurate as to common understanding. This moves NR_WRITTEN accounting to the IO completion time and makes it more consistent with BDI_WRITTEN, which is used for bandwidth estimation. Signed-off-by:
Wu Fengguang <fengguang.wu@intel.com> Cc: Michael Rubin <mrubin@google.com> Signed-off-by:
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Hugh Dickins authored
shmem_unuse_inode() and shmem_writepage() contain a little code to cope with pages inserted independently into the filecache, probably by a filesystem stacked on top of tmpfs, then fed to its ->readpage() or ->writepage(). Unionfs was indeed experimenting with working in that way three years ago, but I find no current examples: nowadays the stacking filesystems use vfs interfaces to the lower filesystem. It's now illegal: remove most of that code, adding some WARN_ON_ONCEs. Signed-off-by:
Hugh Dickins <hughd@google.com> Cc: Erez Zadok <ezk@fsl.cs.sunysb.edu> Signed-off-by:
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Hugh Dickins authored
We can now simplify shmem_getpage_gfp(): there is no longer a dilemma of filepage passed in via shmem_readpage(), then swappage found, which must then be copied over to it. Although at first it's tempting to replace the **pagep arg by returning struct page *, that makes a mess of IS_ERR_OR_NULL(page)s in all the callers, so leave as is. Insert BUG_ON(!PageUptodate) when we find and lock page: some of the complication came from uninitialized pages inserted into filecache prior to readpage; but now we're in control, and only release pagelock on filecache once it's uptodate (if an error occurs in reading back from swap, the page remains in swapcache, never moved to filecache). Signed-off-by:
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Hugh Dickins authored
The prealloc_page handling in shmem_getpage_gfp() is unnecessarily complicated: first simplify that before going on to filepage/swappage. That's right, don't report ENOMEM when the preallocation fails: we may or may not need the page. But simply report ENOMEM once we find we do need it, instead of dropping lock, repeating allocation, unwinding on failure etc. And leave the out label on the fast path, don't goto. Fix something that looks like a bug but turns out not to be: set PageSwapBacked on prealloc_page before its mem_cgroup_cache_charge(), as the removed case was doing. That's important before adding to LRU (determines which LRU the page goes on), and does affect which path it takes through memcontrol.c, but in the end MEM_CGROUP_CHANGE_TYPE_ SHMEM is handled no differently from CACHE. Signed-off-by:
Shaohua Li <shaohua.li@intel.com> Cc: "Zhang, Yanmin" <yanmin.zhang@intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
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Hugh Dickins authored
Remove that pernicious shmem_readpage() at last: the things we needed it for (splice, loop, sendfile, i915 GEM) are now fully taken care of by shmem_file_splice_read() and shmem_read_mapping_page_gfp(). This removal clears the way for a simpler shmem_getpage_gfp(), since page is never passed in; but leave most of that cleanup until after. sys_readahead() and sys_fadvise(POSIX_FADV_WILLNEED) will now EINVAL, instead of unexpectedly trying to read ahead on tmpfs: if that proves to be an issue for someone, then we can either arrange for them to return success instead, or try to implement async readahead on tmpfs. Signed-off-by:
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Hugh Dickins authored
Make shmem_getpage() a wrapper, passing mapping_gfp_mask() down to shmem_getpage_gfp(), which in turn passes gfp down to shmem_swp_alloc(). Change shmem_read_mapping_page_gfp() to use shmem_getpage_gfp() in the CONFIG_SHMEM case; but leave tiny !SHMEM using read_cache_page_gfp(). Add a BUG_ON() in case anyone happens to call this on a non-shmem mapping; though we might later want to let that case route to read_cache_page_gfp(). It annoys me to have these two almost-redundant args, gfp and fault_type: I can't find a better way; but initialize fault_type only in shmem_fault(). Note that before, read_cache_page_gfp() was allocating i915_gem's pages with __GFP_NORETRY as intended; but the corresponding swap vector pages got allocated without it, leaving a small possibility of OOM. Signed-off-by:
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Hugh Dickins authored
Tidy up shmem_file_splice_read(): Remove readahead: okay, we could implement shmem readahead on swap, but have never done so before, swap being the slow exceptional path. Use shmem_getpage() instead of find_or_create_page() plus ->readpage(). Remove several comments: sorry, I found them more distracting than helpful, and this will not be the reference version of splice_read(). Signed-off-by:
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