- 13 Aug, 2013 25 commits
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Amit Daniel Kachhap authored
This patch adds support for h/w mode calibration in the TMU controller. Soc's like 5440 support this features. The h/w bits needed for calibration setting are same as that of enum calibration_type. Acked-by:
Jonghwa Lee <jonghwa3.lee@samsung.com> Acked-by:
Kukjin Kim <kgene.kim@samsung.com> Signed-off-by:
Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by:
Eduardo Valentin <eduardo.valentin@ti.com>
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Amit Daniel Kachhap authored
This patch sets the second point trimming value according to the platform data if the register value is 0. Acked-by:
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Amit Daniel Kachhap authored
This patch adds configuration data for exynos5440 soc. Also register definations for the controller are added. Acked-by:
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Amit Daniel Kachhap authored
This patch modifies TMU controller to add changes needed to work with exynos5440 platform. This sensor registers 3 instance of the tmu controller with the thermal zone and hence reports 3 temperature output. This controller supports upto five trip points. For critical threshold the driver uses the core driver thermal framework for shutdown. Acked-by:
Jungseok Lee <jays.lee@samsung.com> Signed-off-by:
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Amit Daniel Kachhap authored
This patch adds support to parse one more common set of TMU register. First set of register belongs to each instance of TMU and second set belongs to common TMU registers. Acked-by:
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Amit Daniel Kachhap authored
This patch uses the device pointer stored in the configuration structure and converts to dev_* prints and devm API's. Acked-by:
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Amit Daniel Kachhap authored
This patch adds several features supported by TMU as bitfields. This features varies across different SOC type and comparing the features present in the TMU is more logical than comparing the soc itself. Acked-by:
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Amit Daniel Kachhap authored
This patch adds support to handle multiple instances of the TMU controllers. This is done by removing the static structure to register with the core thermal and creating it dynamically for each instance of the TMU controller. The interrupt is made shared type to handle shared interrupts. Now since the ISR needs the core thermal framework to be registered so request_irq is moved after the core registration is done. Also the identifier of the TMU controller is extracted from device tree alias. This will be used for TMU specific initialisation. Acked-by:
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Amit Daniel Kachhap authored
Recently non DT support from Exynos platform is removed and hence removing non DT support from the driver also. This will help in easy maintainence. Acked-by:
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Amit Daniel Kachhap authored
This code simplifies the zone handling to use the trip information passed by the TMU driver and not the hardcoded macros. This also helps in adding more zone support. Acked-by:
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Amit Daniel Kachhap authored
This patch removes the error return in the bind/unbind routine as the platform may not register any cpufreq cooling data. Acked-by:
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Amit Daniel Kachhap authored
This patch renames member private_data to driver_data of the thermal zone registration structure as this item stores the driver related data and uses it to call the driver related callbacks. Acked-by:
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Amit Daniel Kachhap authored
This code modifies the thermal driver to have multiple thermal zone support by replacing the global thermal zone variable with device data member of thermal_zone_device. Acked-by:
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Amit Daniel Kachhap authored
This patch uses the TMU status register to know the generated interrupts and only clear them in the interrupt handler. Acked-by:
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Amit Daniel Kachhap authored
TMU urgently sends active-high signal (thermal trip) to PMU, and thermal tripping by hardware logic. Thermal tripping means that PMU cuts off the whole power of SoC by controlling external voltage regulator. Acked-by:
Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by:
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Amit Daniel Kachhap authored
This patch migrates the TMU register definition/bitfields to data file. This is needed to support SoC's which use the same TMU controller but register validity, offsets or bitfield may slightly vary across SOC's. Acked-by:
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Amit Daniel Kachhap authored
This patch adds entries min_efuse_value, max_efuse_value, default_temp_offset, trigger_type, cal_type, trim_first_point, trim_second_point, max_trigger_level trigger_enable in the TMU platform data structure. Also the driver is modified to use the data passed by these new platform memebers instead of the constant macros. All these changes helps in separating the SOC specific data part from the TMU driver. Acked-by:
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Amit Daniel Kachhap authored
This patch adds some extra register bitfield definations and cleans up the code to prepare for moving register macros and definations inside the TMU data section. In this code cleanup the TMU enable bit is correctly used as bit0 and bit1 is taken care which is reserve bit. Acked-by:
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Amit Daniel Kachhap authored
This code splits the exynos tmu driver code into SOC specific data parts. This will simplify adding new SOC specific data to the same TMU controller. Acked-by:
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Amit Daniel Kachhap authored
This patch renames and moves include/linux/platform_data/exynos_thermal.h to drivers/thermal/samsung/exynos_tmu.h. This file movement is needed as exynos SOC's are not supporting non-DT based platforms and this file now just contains exynos tmu driver related definations. Also struct freq_clip_table is now moved to exynos_thermal_common.c as it fixes the compilation issue occuring because now this new tmu header file is included in tmu driver c file and not in the common thermal header file. Acked-by:
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Amit Daniel Kachhap authored
This patch renames exynos_thermal.c to exynos_tmu.c. This change is needed as this file now just contains exynos tmu driver related codes and thermal zone or cpufreq cooling registration related changes are not there anymore. Acked-by:
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Amit Daniel Kachhap authored
This code bifurcates exynos thermal implementation into common and sensor specific parts. The common thermal code interacts with core thermal layer and core cpufreq cooling parts and is independent of SOC specific driver. This change is needed to cleanly add support for new TMU sensors. Acked-by:
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Amit Daniel Kachhap authored
This patch removes the dependency on CPU_THERMAL for compiling TMU driver. This is useful for cases when only TMU controller needs to be initialised without cpu cooling action. Acked-by:
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Amit Daniel Kachhap authored
This patch uses the recently added config sybmol ARCH_HAS_BANDGAP to enable the TMU driver. This will allow adding support for new soc easily as now it is the platform responsibility to enable this config symbol for a particular soc. Acked-by:
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Amit Daniel Kachhap authored
This movement of files is done for easy maintenance and adding more new sensor's support for exynos platform easily . This will also help in bifurcating exynos common, sensor driver and sensor data related parts. Acked-by:
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- 22 Jul, 2013 1 commit
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Steven Rostedt authored
Commit f1a18a10 "Thermal: CPU Package temperature thermal" had code that did a get_online_cpus(), run a loop and then do a put_online_cpus(). The problem is that the loop had an error exit that would skip the put_online_cpus() part. In the error exit part of the function, it also did a get_online_cpus(), run a loop and then put_online_cpus(). The only way to get to the error exit part is with get_online_cpus() already performed. If this error condition is hit, the system will be prevented from taking CPUs offline. The process taking the CPU offline will lock up hard. Removing the get_online_cpus() removes the lockup as the hotplug CPU refcount is back to zero. This was bisected with ktest. Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
Zhang Rui <rui.zhang@intel.com>
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- 16 Jul, 2013 1 commit
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Srinivas Pandruvada authored
Although it is unlikley that physical package id is set to some arbitary number, it is better to prevent in anycase. Since package temp zones use this in thermal zone type and for allocation, added a limit. Signed-off-by:
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by:
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- 15 Jul, 2013 3 commits
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Wei Yongjun authored
If krealloc() returns NULL, it doesn't free the original. So any code of the form 'foo = krealloc(foo, ...);' is almost certainly a bug. Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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Srinivas Pandruvada authored
On systems with no package MSR support this caused crash as there is a bug in the logic to check presence of DTHERM and PTS feature together. Added a change so that when there is no PTS support, module doesn't get loaded. Even if some CPU comes online with the PTS feature disabled, and other CPUs has this support, this patch will still prevent such MSR accesses. Signed-off-by:
Daniel Walker <dwalker@fifo99.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext4 bugfixes from Ted Ts'o: "Various regression and bug fixes for ext4" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: don't allow ext4_free_blocks() to fail due to ENOMEM ext4: fix spelling errors and a comment in extent_status tree ext4: rate limit printk in buffer_io_error() ext4: don't show usrquota/grpquota twice in /proc/mounts ext4: fix warning in ext4_evict_inode() ext4: fix ext4_get_group_number() ext4: silence warning in ext4_writepages()
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- 14 Jul, 2013 10 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linuxLinus Torvalds authored
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 -
Steven Rostedt authored
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:
Pekka Enberg <penberg@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull more vfs stuff from Al Viro: "O_TMPFILE ABI changes, Oleg's fput() series, misc cleanups, including making simple_lookup() usable for filesystems with non-NULL s_d_op, which allows us to get rid of quite a bit of ugliness" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: sunrpc: now we can just set ->s_d_op cgroup: we can use simple_lookup() now efivarfs: we can use simple_lookup() now make simple_lookup() usable for filesystems that set ->s_d_op configfs: don't open-code d_alloc_name() __rpc_lookup_create_exclusive: pass string instead of qstr rpc_create_*_dir: don't bother with qstr llist: llist_add() can use llist_add_batch() llist: fix/simplify llist_add() and llist_add_batch() fput: turn "list_head delayed_fput_list" into llist_head fs/file_table.c:fput(): add comment Safer ABI for O_TMPFILE
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Al Viro authored
Signed-off-by:Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
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Al Viro authored
... and use d_hash_and_lookup() instead of open-coding it, for fsck sake... Signed-off-by:
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