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* ARM: shmobile: r8a73a4: wait for completion when kicking the clockGuennadi Liakhovetski2013-07-17
| | | | | | | | | | | To reconfigure clocks, controlled by FRQCRA and FRQCRB, a kick bit has to be set and to make sure the setting has taken effect, it has to be read back repeatedly until it is cleared by the hardware. This patch adds the waiting part, that was missing until now. Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: add thermal driver supportSimon Horman2013-07-17
| | | | | | | | | | The current temperature may be read using: cat /sys/class/thermal/thermal_zone0/temp Based on similar work for the r8a73a4 by Kuninori Morimoto. Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: add clocks for thermalSimon Horman2013-07-17
| | | | | Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Add SMSC ethernet chip to KZM9D DT referenceMagnus Damm2013-07-16
| | | | | | | | Add support for the SMSC ethernet controller found on the KZM9D board to the KZM9D DT Reference code. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: KZM9D DT reference implementationMagnus Damm2013-07-16
| | | | | | | | | | | | | | | | Add a DT reference implementation for the KZM9D board. Only DT devices are used in this case. UART, STI, GPIO and SMP / GIC are all provided by emev2.dtsi. There is still a board specific C file used for enabling legacy SH clocks. This file will be removed after we have moved over to common clocks. Signed-off-by: Magnus Damm <damm@opensource.se> [horms+renesas@verge.net.au: Do not include trailing blank line in board-kzm9d-reference.c ] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: add MMCIF and SDHI DT templatesGuennadi Liakhovetski2013-07-16
| | | | | | | | | This adds DT templates for all MMCIF and SDHI controllers on r8a7790. They are added with status="disabled". To use them platform-specific DTs have to enable the required ones. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a73a4: add MMCIF and SDHI DT templatesGuennadi Liakhovetski2013-07-16
| | | | | | | | | This adds DT templates for all MMCIF and SDHI controllers on r8a73a4. They are added with status="disabled". To use them platform-specific DTs have to enable the required ones. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: EMEV2 map_io updateMagnus Damm2013-07-16
| | | | | | | | | | | | | | | | Update the EMEV2 struct map_desc to exclude the SMU and also include the ->map_io() callback in the DT version of EMEV2 board support. The EMEV2 SMP code can these days perform ioremap() early on without the SMU information in the io_desc[]. To correctly support SMP in case of DT-only board support then the ->map_io() callback is needed. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Use DT for SMP on EMEV2 and KZM9DMagnus Damm2013-07-16
| | | | | | | | | Rework the EMEV2 SMP code to rely on DT for CPU information instead of reading out number of CPU cores from the SCU. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Use DT for GIC on EMEV2 and KZM9DMagnus Damm2013-07-16
| | | | | | | | | Remove the C version of the EMEV2 GIC setup code, instead rely on GIC information provided by DT. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Add GIO to EMEV2 dtsiMagnus Damm2013-07-16
| | | | | | | | Add GIO0->GIO4 device nodes to the EMEV2 dtsi file. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Update KZM9D dts command lineMagnus Damm2013-07-16
| | | | | | | | | | | Update the KZM9D DTS command line to remove following cruft: - console=tty0 - no graphic support upstream anyway - earlyprintk= - not supported by the 8250-em driver anyway - mem= - this is provided via DT anyway Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: ape6evm: add CPUFreq supportGuennadi Liakhovetski2013-07-16
| | | | | | | | | This patch adds OPPs to the CA15 DT node and a max8973 DT node to support clock and voltage scaling, using the cpufreq-cpu0 CPUFreq driver. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a73a4: add I2C controller DT nodesGuennadi Liakhovetski2013-07-16
| | | | | | | | | Add Device Tree nodes for the 9 I2C controllers on r8a73a4, compatible with the i2c-sh_mobile.c driver. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused mach/dma.hMagnus Damm2013-07-16
| | | | | | | | Remove mach-shmobile mach/dma.h since it only seems to be used on non-mach-shmobile platforms. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7778: remove r8a7778_init_irq()Kuninori Morimoto2013-07-16
| | | | | | | | | | This patch removes r8a7778_init_irq(), since no-one is using it. And now, there is no reason to have r8a7778_init_irq_common(). r8a7778_init_irq_dt() includes it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Fix EMEV2 clock comment typoMagnus Damm2013-07-16
| | | | | | | | Update the STI timer frequency comment to 32.768 kHz to fix 37 kHz typo. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Make EMEV2 platform devices more compactMagnus Damm2013-07-16
| | | | | | | | | | | Convert the EMEV2 SoC device setup code from using very verbose resources and static platform devices to the same style as more recent boards. This reduces the size of the code. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused EMEV2/KZM9D early consoleMagnus Damm2013-07-16
| | | | | | | | | | | Remove EMEV2 early console code from KZM9D and instead rely on console setup during regular platform device probe time. This makes the DT code and the KZM9D board support behave the same. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove redundant r8a7790 callbackMagnus Damm2013-07-16
| | | | | | | | | Replace the SoC-specific callback init_machine() with a NULL to use the default code. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused sh73a0 auxdata tableMagnus Damm2013-07-16
| | | | | | | | | Pass NULL to of_platform_populate instead of passing an empty list. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused sh7372 auxdata tableMagnus Damm2013-07-16
| | | | | | | | | Pass NULL to of_platform_populate instead of passing an empty list. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused r8a7779 auxdata tableMagnus Damm2013-07-16
| | | | | | | | | Pass NULL to of_platform_populate instead of passing an empty list. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused r8a7778 auxdata and callbackMagnus Damm2013-07-16
| | | | | | | | | Replace the SoC-specific callback init_machine() with a NULL to use the default code. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused r8a7740 auxdata tableMagnus Damm2013-07-16
| | | | | | | | | Pass NULL to of_platform_populate instead of passing an empty list. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: Remove unused EMEV2 auxdata and callbackMagnus Damm2013-07-16
| | | | | | | | | Replace the SoC-specific callback init_machine() with a NULL to use the default code. This cleans up the code and reduces the number of lines. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: kzm9g: Remove init_irq declaration in machine descriptionMagnus Damm2013-07-16
| | | | | | | | | | | Remove redundant irqchip_init() callback. The default case of NULL will result in invoking irqchip_init() anyway. Signed-off-by: Magnus Damm <damm@opensource.se> [ horms+renesas@verge.net.au: Trimmed patch to remove portion that updates the sh73a0 SoC and altered the subject to use the same format as the patch that updates the sh73a0. ] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: sh73a0: Remove init_irq declaration in machine descriptionMaxime Ripard2013-07-16
| | | | | | | | | | Commit ebafed7a ("ARM: irq: Call irqchip_init if no init_irq function is specified") removed the need to explictly setup the init_irq field in the machine description when using only irqchip_init. Remove that declaration for shmobile as well. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: lager: Remove init_irq declaration in machine descriptionMagnus Damm2013-07-16
| | | | | | | | | | | Remove redundant irqchip_init() callback. The default case of NULL will result in invoking irqchip_init() anyway. Signed-off-by: Magnus Damm <damm@opensource.se> [ horms+renesas@verge.net.au: Trimmed patch to remove portion that updates the r8a7790 SoC and altered the subject to use the same format as the patch that updates the r8a7790. ] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7790: Remove init_irq declaration in machine descriptionMaxime Ripard2013-07-16
| | | | | | | | | | Commit ebafed7a ("ARM: irq: Call irqchip_init if no init_irq function is specified") removed the need to explictly setup the init_irq field in the machine description when using only irqchip_init. Remove that declaration for shmobile as well. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: ape6evm: Remove init_irq declaration in machine descriptionMagnus Damm2013-07-16
| | | | | | | | | | | Remove redundant irqchip_init() callback. The default case of NULL will result in invoking irqchip_init() anyway. Signed-off-by: Magnus Damm <damm@opensource.se> [ horms+renesas@verge.net.au: Trimmed patch to remove portion that updates the r8a73a4 SoC and altered the subject to use the same format as the patch that updates the r8a73a4. ] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a73a4: Remove init_irq declaration in machine descriptionMaxime Ripard2013-07-16
| | | | | | | | | | Commit ebafed7a ("ARM: irq: Call irqchip_init if no init_irq function is specified") removed the need to explictly setup the init_irq field in the machine description when using only irqchip_init. Remove that declaration for shmobile as well. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: emev2: Remove init_irq declaration in machine descriptionMaxime Ripard2013-07-16
| | | | | | | | | | Commit ebafed7a ("ARM: irq: Call irqchip_init if no init_irq function is specified") removed the need to explictly setup the init_irq field in the machine description when using only irqchip_init. Remove that declaration for shmobile as well. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: sh73a0 pinmux platform device cleanupMagnus Damm2013-07-16
| | | | | | | | | | | Use DEFINE_RES_MEM() and platform_device_register_simple() to save a couple of lines of code. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [ remove const from resource pfc_resources to avoid section miss-match reported by 4.4.5 ] Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: shmobile: r8a7778: add __initdata on resource and device dataKuninori Morimoto2013-07-16
| | | | | | | | These data will be kmemdup()'ed on platform_device_add_resources() and platform_device_add_data() Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms@verge.net.au>
* ARM: shmobile: armadillo800eva: remove left-oversGuennadi Liakhovetski2013-07-15
| | | | | | | | A comment and a #define in board-armadillo800eva.c have been left over after recent changes and are no longer relevant or needed, remove them. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* Linux 3.11-rc1Linus Torvalds2013-07-14
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* Merge branch 'slab/for-linus' of ↵Linus Torvalds2013-07-14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux Pull slab update from Pekka Enberg: "Highlights: - Fix for boot-time problems on some architectures due to init_lock_keys() not respecting kmalloc_caches boundaries (Christoph Lameter) - CONFIG_SLUB_CPU_PARTIAL requested by RT folks (Joonsoo Kim) - Fix for excessive slab freelist draining (Wanpeng Li) - SLUB and SLOB cleanups and fixes (various people)" I ended up editing the branch, and this avoids two commits at the end that were immediately reverted, and I instead just applied the oneliner fix in between myself. * 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux slub: Check for page NULL before doing the node_match check mm/slab: Give s_next and s_stop slab-specific names slob: Check for NULL pointer before calling ctor() slub: Make cpu partial slab support configurable slab: add kmalloc() to kernel API documentation slab: fix init_lock_keys slob: use DIV_ROUND_UP where possible slub: do not put a slab to cpu partial list when cpu_partial is 0 mm/slub: Use node_nr_slabs and node_nr_objs in get_slabinfo mm/slub: Drop unnecessary nr_partials mm/slab: Fix /proc/slabinfo unwriteable for slab mm/slab: Sharing s_next and s_stop between slab and slub mm/slab: Fix drain freelist excessively slob: Rework #ifdeffery in slab.h mm, slab: moved kmem_cache_alloc_node comment to correct place
| * slub: Check for page NULL before doing the node_match checkSteven Rostedt2013-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the -rt kernel (mrg), we hit the following dump: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180 PGD a2d39067 PUD b1641067 PMD 0 Oops: 0000 [#1] PREEMPT SMP Modules linked in: sunrpc cpufreq_ondemand ipv6 tg3 joydev sg serio_raw pcspkr k8temp amd64_edac_mod edac_core i2c_piix4 e100 mii shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom sata_svw ata_generic pata_acpi pata_serverworks radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod CPU 3 Pid: 20878, comm: hackbench Not tainted 3.6.11-rt25.14.el6rt.x86_64 #1 empty empty/Tyan Transport GT24-B3992 RIP: 0010:[<ffffffff811573f1>] [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180 RSP: 0018:ffff8800a9b17d70 EFLAGS: 00010213 RAX: 0000000000000000 RBX: 0000000001200011 RCX: ffff8800a06d8000 RDX: 0000000004d92a03 RSI: 00000000000000d0 RDI: ffff88013b805500 RBP: ffff8800a9b17dc0 R08: ffff88023fd14d10 R09: ffffffff81041cbd R10: 00007f4e3f06e9d0 R11: 0000000000000246 R12: ffff88013b805500 R13: ffff8801ff46af40 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f4e3f06e700(0000) GS:ffff88023fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000000 CR3: 00000000a2d3a000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process hackbench (pid: 20878, threadinfo ffff8800a9b16000, task ffff8800a06d8000) Stack: ffff8800a9b17da0 ffffffff81202e08 ffff8800a9b17de0 000000d001200011 0000000001200011 0000000001200011 0000000000000000 0000000000000000 00007f4e3f06e9d0 0000000000000000 ffff8800a9b17e60 ffffffff81041cbd Call Trace: [<ffffffff81202e08>] ? current_has_perm+0x68/0x80 [<ffffffff81041cbd>] copy_process+0xdd/0x15b0 [<ffffffff810a2125>] ? rt_up_read+0x25/0x30 [<ffffffff8104369a>] do_fork+0x5a/0x360 [<ffffffff8107c66b>] ? migrate_enable+0xeb/0x220 [<ffffffff8100b068>] sys_clone+0x28/0x30 [<ffffffff81527423>] stub_clone+0x13/0x20 [<ffffffff81527152>] ? system_call_fastpath+0x16/0x1b Code: 89 fc 89 75 cc 41 89 d6 4d 8b 04 24 65 4c 03 04 25 48 ae 00 00 49 8b 50 08 4d 8b 28 49 8b 40 10 4d 85 ed 74 12 41 83 fe ff 74 27 <48> 8b 00 48 c1 e8 3a 41 39 c6 74 1b 8b 75 cc 4c 89 c9 44 89 f2 RIP [<ffffffff811573f1>] kmem_cache_alloc_node+0x51/0x180 RSP <ffff8800a9b17d70> CR2: 0000000000000000 ---[ end trace 0000000000000002 ]--- Now, this uses SLUB pretty much unmodified, but as it is the -rt kernel with CONFIG_PREEMPT_RT set, spinlocks are mutexes, although they do disable migration. But the SLUB code is relatively lockless, and the spin_locks there are raw_spin_locks (not converted to mutexes), thus I believe this bug can happen in mainline without -rt features. The -rt patch is just good at triggering mainline bugs ;-) Anyway, looking at where this crashed, it seems that the page variable can be NULL when passed to the node_match() function (which does not check if it is NULL). When this happens we get the above panic. As page is only used in slab_alloc() to check if the node matches, if it's NULL I'm assuming that we can say it doesn't and call the __slab_alloc() code. Is this a correct assumption? Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * mm/slab: Give s_next and s_stop slab-specific namesWanpeng Li2013-07-08
| | | | | | | | | | | | | | | | Give s_next and s_stop slab-specific names instead of exporting "s_next" and "s_stop". Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * slob: Check for NULL pointer before calling ctor()Steven Rostedt2013-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While doing some code inspection, I noticed that the slob constructor method can be called with a NULL pointer. If memory is tight and slob fails to allocate with slob_alloc() or slob_new_pages() it still calls the ctor() method with a NULL pointer. Looking at the first ctor() method I found, I noticed that it can not handle a NULL pointer (I'm sure others probably can't either): static void sighand_ctor(void *data) { struct sighand_struct *sighand = data; spin_lock_init(&sighand->siglock); init_waitqueue_head(&sighand->signalfd_wqh); } The solution is to only call the ctor() method if allocation succeeded. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * slub: Make cpu partial slab support configurableJoonsoo Kim2013-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | CPU partial support can introduce level of indeterminism that is not wanted in certain context (like a realtime kernel). Make it configurable. This patch is based on Christoph Lameter's "slub: Make cpu partial slab support configurable V2". Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * slab: add kmalloc() to kernel API documentationMichael Opdenacker2013-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At the moment, kmalloc() isn't even listed in the kernel API documentation (DocBook/kernel-api.html after running "make htmldocs"). Another issue is that the documentation for kmalloc_node() refers to kcalloc()'s documentation to describe its 'flags' parameter, while kcalloc() refered to kmalloc()'s documentation, which doesn't exist! This patch is a proposed fix for this. It also removes the documentation for kmalloc() in include/linux/slob_def.h which isn't included to generate the documentation anyway. This way, kmalloc() is described in only one place. Acked-by: Christoph Lameter <cl@linux.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * slab: fix init_lock_keysChristoph Lameter2013-07-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some architectures (e.g. powerpc built with CONFIG_PPC_256K_PAGES=y CONFIG_FORCE_MAX_ZONEORDER=11) get PAGE_SHIFT + MAX_ORDER > 26. In 3.10 kernels, CONFIG_LOCKDEP=y with PAGE_SHIFT + MAX_ORDER > 26 makes init_lock_keys() dereference beyond kmalloc_caches[26]. This leads to an unbootable system (kernel panic at initializing SLAB) if one of kmalloc_caches[26...PAGE_SHIFT+MAX_ORDER-1] is not NULL. Fix this by making sure that init_lock_keys() does not dereference beyond kmalloc_caches[26] arrays. Signed-off-by: Christoph Lameter <cl@linux.com> Reported-by: Tetsuo Handa <penguin-kernel@I-Love.SAKURA.ne.jp> Cc: Pekka Enberg <penberg@kernel.org> Cc: <stable@vger.kernel.org> [3.10.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * slob: use DIV_ROUND_UP where possibleSasha Levin2013-07-07
| | | | | | | | | | | | Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * slub: do not put a slab to cpu partial list when cpu_partial is 0Joonsoo Kim2013-07-07
| | | | | | | | | | | | | | | | | | | | | | In free path, we don't check number of cpu_partial, so one slab can be linked in cpu partial list even if cpu_partial is 0. To prevent this, we should check number of cpu_partial in put_cpu_partial(). Acked-by: Christoph Lameeter <cl@linux.com> Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * mm/slub: Use node_nr_slabs and node_nr_objs in get_slabinfoWanpeng Li2013-07-07
| | | | | | | | | | | | | | | | | | Use existing interface node_nr_slabs and node_nr_objs to get nr_slabs and nr_objs. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * mm/slub: Drop unnecessary nr_partialsWanpeng Li2013-07-07
| | | | | | | | | | | | | | | | This patch remove unused nr_partials variable. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * mm/slab: Fix /proc/slabinfo unwriteable for slabWanpeng Li2013-07-07
| | | | | | | | | | | | | | | | | | | | | | Slab have some tunables like limit, batchcount, and sharedfactor can be tuned through function slabinfo_write. Commit (b7454ad3: mm/sl[au]b: Move slabinfo processing to slab_common.c) uncorrectly change /proc/slabinfo unwriteable for slab, this patch fix it by revert to original mode. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
| * mm/slab: Sharing s_next and s_stop between slab and slubWanpeng Li2013-07-07
| | | | | | | | | | | | | | | | This patch shares s_next and s_stop between slab and slub. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-14 00:27:35 -0400