- 05 Mar, 2008 40 commits
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Hugh Dickins authored
There's nothing wrong with mem_cgroup_charge failure in do_wp_page and do_anonymous page using __free_page, but it does look odd when nearby code uses page_cache_release: use that instead (while turning a blind eye to ancient inconsistencies of page_cache_release versus put_page). Signed-off-by:
Hugh Dickins <hugh@veritas.com> Cc: David Rientjes <rientjes@google.com> Acked-by:
Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hirokazu Takahashi <taka@valinux.co.jp> Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Cc: Paul Menage <menage@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Hugh Dickins authored
Each caller of mem_cgroup_move_lists is having to use page_get_page_cgroup: it's more convenient if it acts upon the page itself not the page_cgroup; and in a later patch this becomes important to handle within memcontrol.c. Signed-off-by:
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Hugh Dickins authored
vm_match_cgroup is a perverse name for a macro to match mm with cgroup: rename it mm_match_cgroup, matching mm_init_cgroup and mm_free_cgroup. Signed-off-by:
David Rientjes <rientjes@google.com> Acked-by:
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Mathieu Desnoyers authored
Wrap __mark_check_format() into an if(0) to make sure that parameters such as trace_mark(mm_page_alloc, "order %u pfn %lu", order, page?page_to_pfn(page):0); (where page_to_pfn() has side-effects) won't generate code because of the __mark_check_format(). Thanks to Jan Kiszka for reporting this. Signed-off-by:
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Signed-off-by:
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Jesper Juhl authored
get_marker() may return NULL, so test for it. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Acked-by:
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Chris Dearman authored
Signed-off-by:
Chris Dearman <chris@mips.com> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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FUJITA Tomonori authored
This just removes unused DEBUG_FORCEDAC define in the IOMMU code. Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by:
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FUJITA Tomonori authored
This patch makes the IOMMU code not allocate a memory area spanning LLD's segment boundary. is_span_boundary() judges whether a memory area spans LLD's segment boundary. If iommu_arena_find_pages() finds such a area, it tries to find the next available memory area. Signed-off-by:
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FUJITA Tomonori authored
iommu_arena_find_pages duplicates the code to access to the bitmap for free space management. This patch convert the IOMMU code to have only one place to access the bitmap, in the popular way that other IOMMUs (e.g. POWER and SPARC) do. This patch is preparation for modifications to fix the IOMMU segment boundary problem. Signed-off-by:
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FUJITA Tomonori authored
This patch is preparation for modifications to fix the IOMMU segment boundary problem. Signed-off-by:
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Eric Sandeen authored
Include falloc.h in header-y; it defines a flag for the fallocate sysctl. Signed-off-by:
Eric Sandeen <sandeen@redhat.com> Signed-off-by:
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Jesper Nilsson authored
Adrian Bunk reported another compile error with a SVN head GCC: ... CC arch/cris/arch-v10/lib/string.o /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138: error: lvalue required as increment operand /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138: error: lvalue required as increment operand /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:139: error: lvalue required as increment operand ... This is due to the use of the construct: *((long*)dst)++ = lc; Which isn't legal since casts don't return an lvalue. The solution is to import the implementation from newlib, which is continually autotested together with GCC mainline, and uses the construct: *(long *) dst = lc; dst += 4; Since this is an import of a file from newlib, I'm not touching the formatting or correcting any checkpatch errors. As for the earlier fix for memset.c, even if the two files for CRIS v10 and CRIS v32 are identical at the moment, it might be possible to tweak the CRIS v32 version. Thus, I'm not yet folding them into the same file, at least not until we've done some research on it. Signed-off-by:
Jesper Nilsson <jesper.nilsson@axis.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by:
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David Sterba authored
The Coverity checker spotted the following inconsequent NULL checking in drivers/char/pcmcia/ipwireless/network.c:ipwireless_network_packet_received() if (tty && channel_idx == IPW_CHANNEL_RAS && (network->ras_control_lines & IPW_CONTROL_LINE_DCD) != 0 && ipwireless_tty_is_modem(tty)) { ... else ipwireless_tty_received(tty, data, length); Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by:David Sterba <dsterba@suse.cz> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Cc: "John W. Linville" <linville@tuxdriver.com> Signed-off-by:
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Ville Syrjala authored
SM502 has a programmable PLL which can provide the panel pixel clock instead of the 288MHz and 336MHz PLLs. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Ville Syrjala <syrjala@sci.fi> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by:
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Ville Syrjala authored
misc_div is a subset of px_div so eliminate the smaller table. Signed-off-by:
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Ville Syrjala authored
Vertical sync height register can only hold 6 bits. Fix the hsync start test to use > instead of >=. Also add a few clarifying comments. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
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Ville Syrjala authored
Even though it may not be strictly necessary transp.offset should probably be 0 when alpha channel is not available. Signed-off-by:
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Ville Syrjala authored
The RGB offsets were reversed in 16bpp modes. Simply trying to reverse the offsets when endianness differs is clearly the wrong thing to do but that is an issue for another patch. Signed-off-by:
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Ville Syrjala authored
The sm501fb palette code clearly does not handle direct color so change the driver to use true color visual for 16bpp. Signed-off-by:
Magnus Damm <damm@igel.co.jp> Acked-by:
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Andrew Morton authored
We should be able to do ndelay(some_u64), but that can cause a call to __divdi3() to be emitted because the ndelay() macros does a divide. Fix it by switching to static inline which will force the u64 arg to be treated as an unsigned long. udelay() takes an unsigned long arg. [bunk@kernel.org: reported m68k build breakage] Cc: Adrian Bunk <bunk@kernel.org> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Martin Michlmayr <tbm@cyrius.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by:
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Anton Vorontsov authored
The patch replaces dev_dbg() by dev_err(), so the user could actually see the error, instead of wondering why w1 doesn't work. The root cause of the bus reset error isn't yet debugged though, but this sometimes happens on iPaq H5555. And while I'm at it, some cosmetic cleanups also made (few lines were using spaces instead of tabs). Signed-off-by:
Anton Vorontsov <cbouatmailru@gmail.com> Acked-by:
Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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Anton Vorontsov authored
On the error condition clk_get() returns ERR_PTR(..), so checking for NULL doesn't work. ds1wm module causes a kernel oops when ds1wm clock isn't registered. This patch converts NULL check to IS_ERR(), plus uses PTR_ERR() for the return code. Signed-off-by:
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Grant Likely authored
Commit id 94f38948 (Separate MPC52xx PSC FIOF regsiters from the rest of PSC) split the PSC fifo registers away from the core PSC regs. Doing so broke the mpc52xx_psc_spi driver. This patch teaches the mpc52xx_psc_spi driver about the new PSC fifo register definitions. Signed-off-by:
Grant Likely <grant.likely@secretlab.ca> Cc: David Brownell <david-b@pacbell.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Kumar Gala <galak@gate.crashing.org> Signed-off-by:
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Peter Osterlund authored
On my system, pkt_open() consumes 584 bytes because the compiler decides to inline lots of functions that would not normally be part of long call chains. The following patch fixes that problem on my system. Signed-off-by:
Peter Osterlund <petero2@telia.com> Cc: Nix <nix@esperi.org.uk> Signed-off-by:
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Andrew Morton authored
People are adding `noinline' in various places to prevent excess stack consumption due to gcc inlining. But once this is done, it is quite unobvious why the `noinline' is present in the code. We can comment each and every site, or we can use noinline_for_stack. Signed-off-by:
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Krzysztof Helt authored
Correct error paths in probe function. The probe function enables mmio mode so it important to disable the mmio mode before exiting the probe function. Otherwise, the console is left in unusable state (garbled fonts at least, lock up at worst). [akpm@linux-foundation.org: cleanups] Signed-off-by:
Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Balbir Singh authored
Rename Memory Controller to Memory Resource Controller. Reflect the same changes in the CONFIG definition for the Memory Resource Controller. Group together the config options for Resource Counters and Memory Resource Controller. Signed-off-by:
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Ananth N Mavinakayanahalli authored
Move kprobes examples from Documentation/kprobes.txt to under samples/. Patch originally by Randy Dunlap. o Updated the patch to apply on 2.6.25-rc3 o Modified examples code to build on multiple architectures. Currently, the kprobe and jprobe examples code works for x86 and powerpc o Cleaned up unneeded #includes o Cleaned up Kconfig per Sam Ravnborg's suggestions to fix build break on archs that don't have kretprobes o Implemented suggestions by Mathieu Desnoyers on CONFIG_KRETPROBES o Included Andrew Morton's cleanup based on x86-git o Modified kretprobe_example to act as a arch-agnostic module to determine routine execution times: Use 'modprobe kretprobe_example func=<func_name>' to determine execution time of func_name in nanoseconds. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by:
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Ananth N Mavinakayanahalli authored
Add CONFIG_HAVE_KRETPROBES to the arch/<arch>/Kconfig file for relevant architectures with kprobes support. This facilitates easy handling of in-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on kretprobes being present in the kernel. Thanks to Sam Ravnborg for helping make the patch more lean. Per Mathieu's suggestion, added CONFIG_KRETPROBES and fixed up dependencies. Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Samuel Thibault authored
VT notifier callbacks need to be aware of console switches. This is already partially done from console_callback(), but at that time fg_console, cursor positions, etc. are not yet updated and hence screen readers fetch the old values. This adds an update notify after all of the values are updated in redraw_screen(vc, 1). Signed-off-by:
Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: <stable@kernel.org> Signed-off-by:
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Eric Dumazet authored
Some oprofile results obtained while using tbench on a 2x2 cpu machine were very surprising. For example, loopback_xmit() function was using high number of cpu cycles to perform the statistic updates, supposed to be real cheap since they use percpu data pcpu_lstats = netdev_priv(dev); lb_stats = per_cpu_ptr(pcpu_lstats, smp_processor_id()); lb_stats->packets++; /* HERE : serious contention */ lb_stats->bytes += skb->len; struct pcpu_lstats is a small structure containing two longs. It appears that on my 32bits platform, alloc_percpu(8) allocates a single cache line, instead of giving to each cpu a separate cache line. Using the following patch gave me impressive boost in various benchmarks ( 6 % in tbench) (all percpu_counters hit this bug too) Long term fix (ie >= 2.6.26) would be to let each CPU allocate their own block of memory, so that we dont need to roudup sizes to L1_CACHE_BYTES, or merging the SGI stuff of course... Note : SLUB vs SLAB is important here to *show* the improvement, since they dont have the same minimum allocation sizes (8 bytes vs 32 bytes). This could very well explain regressions some guys reported when they switched to SLUB. Signed-off-by:Eric Dumazet <dada1@cosmosbay.com> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
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Jan Kara authored
Fix NULL pointer dereference in fsync_buffers_list() introduced by recent fix of races in private_list handling. Since bh->b_assoc_map has been cleared in __remove_assoc_queue() we should really use original value stored in the 'mapping' variable. Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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KOSAKI Motohiro authored
jiffies subtraction may cause an overflow problem. It should be using time_after(). [akpm@linux-foundation.org: include jiffies.h] Signed-off-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Paul Jackson <pj@sgi.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by:
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Alex Riesen authored
Keith Mannthey said: The parameter hotadd_percent is setup right but there is a "Malformed early option 'numa'" message. Rusty Russell said: This happens when the function registered with early_param() returns non-zero. __setup() functions return 1 if OK, module_param() and early_param() return 0 or a -ve error code. For instance: Linux version 2.6.25-rc3-t (raa@steel) (gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)) #22 SMP PREEMPT Tue Feb 26 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000003fff0000 (usable) BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS) BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data) BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) Malformed early option 'loglevel' 127MB HIGHMEM available. 896MB LOWMEM available. Command line: BOOT_IMAGE=2.6.25-t ro root=809 ro console=ttyS0,57600n8 console=tty0 loglevel=5 Acked-by:
Yinghai Lu <yhlu.kernel@gmai.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Keith Mannthey <kmannth@gmail.com> Signed-off-by:
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Roland McGrath authored
This makes the user_regset-based core dump code call user_regset writeback hooks when available. This is necessary groundwork to allow IA64 to set CORE_DUMP_USE_REGSET. Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by:
Roland McGrath <roland@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by:
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akpm@linux-foundation.org authored
Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Cc: Paul Menage <menage@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Cc: Hugh Dickins <hugh@veritas.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by:
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Paul Menage authored
Control Groups: Add Paul Menage as maintainer Signed-off-by:
Paul Menage <menage@google.com> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Cc: Hugh Dickins <hugh@veritas.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: David Rientjes <rientjes@google.com> Signed-off-by:
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David Brownell authored
Add a <linux/gpio.h> defining fail/warn stubs for GPIO calls on platforms that don't support the GPIO programming interface. That includes the arch-specific implementation glue otherwise. This facilitates a new model for GPIO usage: drivers that can use GPIOs if they're available, but don't require them. One example of such a driver is NAND driver for various FreeScale chips. On platforms update with GPIO support, they can be used instead of a worst-case delay to verify that the BUSY signal is off. (Also includes a couple minor unrelated doc updates.) Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Signed-off-by:
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Harvey Harrison authored
Noticed by sparse, trivial to see: drivers/char/specialix.c:2112:3: warning: context imbalance in 'sx_throttle' - unexpected unlock Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Byron Bradley authored
This adds basic get/set time support for the Seiko Instruments S-35390A. This chip communicates using I2C and is used on the QNAP TS-109/TS-209 NAS devices. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Byron Bradley <byron.bbradley@gmail.com> Acked-by:
Jean Delvare <khali@linux-fr.org> Acked-by:
David Brownell <david-b@pacbell.net> Tested-by:
Tim Ellis <tim@ngndg.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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