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* Merge branch 'upstream-linus' of ↵Linus Torvalds2009-09-1126-246/+891
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (25 commits) pata_rz1000: use printk_once ahci: kill @force_restart and refine CLO for ahci_kick_engine() pata_cs5535: add pci id for AMD based CS5535 controllers ahci: Add AMD SB900 SATA/IDE controller device IDs drivers/ata: use resource_size sata_fsl: Defer non-ncq commands when ncq commands active libata: add SATA PMP revision information for spec 1.2 libata: fix off-by-one error in ata_tf_read_block() ahci: Gigabyte GA-MA69VM-S2 can't do 64bit DMA ahci: make ahci_asus_m2a_vm_32bit_only() quirk more generic dmi: extend dmi_get_year() to dmi_get_date() dmi: fix date handling in dmi_get_year() libata: unbreak TPM filtering by reorganizing ata_scsi_pass_thru() sata_sis: convert to slave_link sata_sil24: always set protocol override for non-ATAPI data commands libata: Export AHCI capabilities libata: Delegate nonrot flag setting to SCSI [libata] Add pata_rdc driver for RDC ATA devices drivers/ata: Remove unnecessary semicolons libata: remove spindown skipping and warning ...
| * pata_rz1000: use printk_onceMarcin Slusarz2009-09-111-3/+1
| | | | | | | | | | Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: kill @force_restart and refine CLO for ahci_kick_engine()Shane Huang2009-09-111-12/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch refines ahci_kick_engine() after discussion with Tejun about FBS(FIS-based switching) support preparation: a. Kill @force_restart and always kick the engine. The only case where @force_restart is zero is when it's called from ahci_p5wdh_hardreset() Actually at that point, BSY is pretty much guaranteed to be set. b. If PMP is attached, ignore busy and always do CLO. (AHCI-1.3 9.2) Signed-off-by: Shane Huang <shane.huang@amd.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * pata_cs5535: add pci id for AMD based CS5535 controllersOtavio Salvador2009-09-111-1/+2
| | | | | | | | | | Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: Add AMD SB900 SATA/IDE controller device IDsShane Huang2009-09-114-1/+11
| | | | | | | | | | | | | | Add AMD SB900 SATA/IDE controller device IDs. Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * drivers/ata: use resource_sizeJulia Lawall2009-09-114-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the function resource_size, which reduces the chance of introducing off-by-one errors in calculating the resource size. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct resource *res; @@ - (res->end - res->start) + 1 + resource_size(res) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_fsl: Defer non-ncq commands when ncq commands activeAshish Kalra2009-09-081-0/+1
| | | | | | | | | | | | | | | | | | Fix for non-ncq & ncq commands causing timeouts when both are issued simultaneously to the same device. Signed-off-by: Ashish Kalra <Ashish.Kalra@freescale.com> [fixed to be actual compileable C code -jg] Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: add SATA PMP revision information for spec 1.2Shane Huang2009-09-081-0/+2
| | | | | | | | | | | | | | This small patch is just adding the information for PMP spec 1.2 Signed-off-by: Shane Huang <shane.huang@amd.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: fix off-by-one error in ata_tf_read_block()Tejun Heo2009-09-081-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | ata_tf_read_block() has off-by-one error when converting CHS address to LBA. The bug isn't very visible because ata_tf_read_block() is used only when generating sense data for a failed RW command and CHS addressing isn't used too often these days. This problem was spotted by Atsushi Nemoto. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: Gigabyte GA-MA69VM-S2 can't do 64bit DMATejun Heo2009-09-081-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Gigabyte GA-MA69VM-S2 can't do 64bit DMA either. It's yet unknown whether recent BIOS fixes the problem. Blacklist regardless of BIOS revisions for now. Sandor Bodo-Merle reported and provided the initial patch for this issue. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Sandor Bodo-Merle <sbodomerle@gmail.com> Cc: Shane Huang <shane.huang@amd.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * ahci: make ahci_asus_m2a_vm_32bit_only() quirk more genericTejun Heo2009-09-081-24/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | It turns out ASUS M2A-VM isn't the only one with the 32bit DMA problem. Make ahci_asus_m2a_vm_32bit_only() more generic using the new dmi_get_date() and rename it to ahci_sb600_32bit_only(). Cut off date is now pointed to by dmi_system_id->driver_data in "yyyymmdd" format and it's now also allowed to be omitted. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sandor Bodo-Merle <sbodomerle@gmail.com> Cc: Shane Huang <shane.huang@amd.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * dmi: extend dmi_get_year() to dmi_get_date()Tejun Heo2009-09-083-21/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are cases where full date information is required instead of just the year. Add month and day parsing to dmi_get_year() and rename it to dmi_get_date(). As the original function only required '/' followed by any number of parseable characters at the end of the string, keep that behavior to avoid upsetting existing users. The new function takes dates of format [mm[/dd]]/yy[yy]. Year, month and date are checked to be in the ranges of [1-9999], [1-12] and [1-31] respectively and any invalid or out-of-range component is returned as zero. The dummy implementation is updated accordingly but the return value is updated to indicate field not found which is consistent with how other dummy functions behave. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * dmi: fix date handling in dmi_get_year()Tejun Heo2009-09-081-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year parsing in dmi_get_year() had the following two bugs. * "00" is treated as invalid instead of 2000 because zero return from simple_strtoul() is treated as error. * "0N" where N >= 8 is treated as invalid of 200N because the leading 0 is considered to specify octal. Fix the above two bugs by using endptr to detect invalid number and forcing decimal. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: unbreak TPM filtering by reorganizing ata_scsi_pass_thru()Tejun Heo2009-09-081-53/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ata_scsi_pass_thru() was checking for input sanity and disallowed commands while initializaing qc from scmd. TPM filtering was added right after protocol check at which point tf wasn't initialized properly. This means that TPM filtering has never really worked. This patch fixes the bug by reorganizing ata_scsi_pass_thru() such that qc is fully initialized before checking for invalid conditions which is way less error prone. Discovered while Thilo-Alexander Ginkel was trying debug patches for bko#13416. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Thilo-Alexander Ginkel <thilo@ginkel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_sis: convert to slave_linkTejun Heo2009-09-081-50/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During introduction of slave_link, sata_sis slipped through the crack and left with ad-hoc merged SCR access. As SCR status was shared for both the master and slave devices, when only one of the device is online, libata EH would think both are online but would only get valid device signature for the actually present one, which in turn trigger the probing safety net mechanism and make EH retry causing large delay during boot. This patch converts sata_sis to slave_link mechanism. This bug was reported by TAXI in bko#14075. http://bugzilla.kernel.org/show_bug.cgi?id=14075 Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: TAXI <taxi@a-city.de> Cc: Uwe Koziolek <uwe.koziolek@gmx.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * sata_sil24: always set protocol override for non-ATAPI data commandsRobert Hancock2009-09-011-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sil24 hardware has a built-in list of commands and associated protocols that gets used by default to decide how to handle a given command. However, if the command is not known to the controller then it presumably assumes it to be a non-data command which then causes protocol mismatch errors if the device ends up requesting data transfer. The new DATA SET MANAGEMENT - Trim command causes this issue since it's a DMA data-out command. Since we should always know best what protocol the command should be using, let's just set the override flag to inform the controller what protocol to use for all non-ATAPI commands with data transfer. Signed-off-by: Robert Hancock <hancockrwd@gmail.com> Tested-by: Mark Lord <liml@rtr.ca> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: Export AHCI capabilitiesMatthew Garrett2009-09-011-0/+44
| | | | | | | | | | | | | | | | | | | | AHCI exports various capability bits that may be of interest to userspace such as whether the BIOS claims a port is hotpluggable or eSATA. Providing these via sysfs along with the version of the AHCI spec implemented by the host allows userspace to make policy decisions for things like ALPM. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: Delegate nonrot flag setting to SCSIMartin K. Petersen2009-09-011-4/+0
| | | | | | | | | | | | | | | | Now that the SCSI disk driver correctly handles non-rotational devices we can move setting the queue flag to SCSI. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] Add pata_rdc driver for RDC ATA devicesAlan Cox2009-09-013-0/+411
| | | | | | | | | | | | | | From: Alan Cox <alan@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * drivers/ata: Remove unnecessary semicolonsJoe Perches2009-09-012-2/+2
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: remove spindown skipping and warningTejun Heo2009-09-011-51/+0
| | | | | | | | | | | | | | | | | | | | This was a hack to give userland shutdown tools time to drop manual spindown. All popular distros updated quite some time ago and the due is well passed. Drop it. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Jaswinder Singh Rajput <jaswinder@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: add command name parsing for error outputRobert Hancock2009-09-014-4/+143
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch improve libata's output for error/notification messages to allow easier comprehension and debugging: When ATAPI commands issued through the SCSI layer fail, use SCSI functions to print the CDB in human-readable form instead of just dumping out the CDB in hex. Print out the name of the failed command (as defined by the ATA specification) in error handling output along with the raw register contents. When reporting status of ACPI taskfile commands executed on resume, also output the names of the commands being executed (or not) in readable form. Since the extra data for printing command names increases kernel size slightly, a config option has been added to allow disabling command name output (as well as some of the error register parsing) for those highly sensitive to kernel text size. Signed-off-by: Robert Hancock <hancockrwd@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * libata: clear eh_info on reset completionTejun Heo2009-09-011-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Resets are done with port frozen but some controllers still issue interrupts during reset and they may end up recording error conditions in ehi leading to unnecessary EH retrials. This patch makes ata_eh_reset() clear ehi on reset completion. As reset is the most severe recovery action, there's nothing to lose by clearing ehi on its completion. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Zdenek Kaspar <zkaspar82@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] add DMA setup FIS auto-activate featureShaohua Li2009-09-012-8/+30
| | | | | | | | | | | | | | Hopefully results in fewer on-the-wire FIS's and no breakage. We'll see! Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] sata_sil: disable DMA engine in sil_freeze()Jeff Garzik2009-09-011-0/+13
| | | | | | | | | | | | We must disable the DMA engine before accessing taskfile registers. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * [libata] EH: freeze port before aborting commandsJeff Garzik2009-09-011-2/+4
| | | | | | | | | | | | | | | | | | Call the ->freeze() hook before aborting qc's, because some hardware requires special handling prior to accessing the taskfile registers (for diagnosis/analysis/reset). Most notably, hardware may wish to disable the DMA engine or interrupts in the ->freeze() hook. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge branch 'oprofile-for-linus' of ↵Linus Torvalds2009-09-116-2/+140
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (55 commits) arch/x86/oprofile/op_model_amd.c: fix op_amd_handle_ibs() return type Revert "x86: oprofile/op_model_amd.c set return values for op_amd_handle_ibs()" x86/oprofile: Small coding style fixes x86/oprofile: Add counter reservation check for virtual counters x86/oprofile: Implement op_x86_virt_to_phys() oprofile: Adding switch counter to oprofile statistic variables x86/oprofile: Implement mux_clone() x86/oprofile: Enable multiplexing only if the model supports it x86/oprofile: Add function has_mux() to check multiplexing support x86/oprofile: Modify initialization of num_virt_counters x86/oprofile: Remove unused num_virt_controls from struct op_x86_model_spec x86/oprofile: Remove const qualifier from struct op_x86_model_spec x86/oprofile: Moving nmi_cpu_switch() in nmi_int.c x86/oprofile: Moving nmi_cpu_save/restore_mpx_registers() in nmi_int.c x86/oprofile: Moving nmi_setup_cpu_mux() in nmi_int.c x86/oprofile: Implement multiplexing setup/shutdown functions oprofile: Grouping multiplexing code in op_model_amd.c oprofile: Introduce op_x86_phys_to_virt() oprofile: Grouping multiplexing code in oprof.c oprofile: Remove oprofile_multiplexing_init() ...
| * | oprofile: Adding switch counter to oprofile statistic variablesRobert Richter2009-07-203-9/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the multiplexing switch counter from x86 code to common oprofile statistic variables. Now the value will be available and usable for all architectures. The initialization and incrementation also moved to common code. Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: Grouping multiplexing code in oprof.cRobert Richter2009-07-201-51/+49
| | | | | | | | | | | | | | | | | | | | | This patch moves multiplexing code to a single section of code. This reduces the use of #ifdefs especially within functions. Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: Remove oprofile_multiplexing_init()Robert Richter2009-07-202-14/+2
| | | | | | | | | | | | | | | | | | | | | oprofile_multiplexing_init() can be removed when moving the initialization of oprofile_time_slice to oprofile_create_files(). Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: Rename variable timeout_jiffies and move to oprofile_files.cRobert Richter2009-07-203-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch renames timeout_jiffies into an oprofile specific name. The macro MULTIPLEXING_TIMER_DEFAULT is changed too. Also, since this variable is controlled using oprofilefs, its definition is moved to oprofile_files.c. Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: oprofile_set_timeout(), return with error for invalid argsRobert Richter2009-07-201-3/+8
| | | | | | | | | | | | | | | | | | | | | Return with -EINVAL for invalid parameters instead of setting the default value in oprofile_set_timeout(). Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: Implement performance counter multiplexingJason Yeh2009-07-204-0/+133
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The number of hardware counters is limited. The multiplexing feature enables OProfile to gather more events than counters are provided by the hardware. This is realized by switching between events at an user specified time interval. A new file (/dev/oprofile/time_slice) is added for the user to specify the timer interval in ms. If the number of events to profile is higher than the number of hardware counters available, the patch will schedule a work queue that switches the event counter and re-writes the different sets of values into it. The switching mechanism needs to be implemented for each architecture to support multiplexing. This patch only implements AMD CPU support, but multiplexing can be easily extended for other models and architectures. There are follow-on patches that rework parts of this patch. Signed-off-by: Jason Yeh <jason.yeh@amd.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
| | |
| | \
| *-. \ Merge commit 'v2.6.31-rc3'; commit 'tip/oprofile' into oprofile/coreRobert Richter2009-07-143294-319969/+465267
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/oprofile/oprofile_stats.c drivers/usb/otg/Kconfig drivers/usb/otg/Makefile Signed-off-by: Robert Richter <robert.richter@amd.com>
| | | * \ Merge branch 'auto' of ↵Ingo Molnar2009-06-172-1/+16
| | | |\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into oprofile
| | | | * | Merge branches 'oprofile/fixes', 'oprofile/next' and 'oprofile/master' into ↵Robert Richter2009-06-121-0/+1
| | |_|/| | | |/| | | | | | | | | | | | | | | | oprofile/auto
| | | | * | oprofile: reset bt_lost_no_mapping with other statsMaynard Johnson2009-06-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bt_lost_no_mapping is not getting reset at the start of a profiling run, thus the oprofiled.log shows erroneous values for this statistic. The attached patch fixes this problem. Signed-off-by: Maynard Johnson <maynardj@us.ibm.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | | | | Merge commit 'tip/perfcounters-for-linus' into oprofile/masterRobert Richter2009-06-1221-138/+1103
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/oprofile/op_model_ppro.c Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | | | | | x86/oprofile: introduce oprofile_add_data64()Robert Richter2009-06-111-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IBS implemention writes 64 bit register values to the cpu buffer by writing two 32 values using oprofile_add_data(). This patch introduces oprofile_add_data64() to write a single 64 bit value to the buffer. Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | | | | | oprofile: remove obselete include headersRobert Richter2009-06-111-1/+0
| | |_|_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This became obsolete with this commit: 6dad828 oprofile: port to the new ring_buffer Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | | | | Merge branch 'irq-core-for-linus' of ↵Linus Torvalds2009-09-111-11/+3
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: pci/intr_remapping: Allocate irq_iommu on node irq: Add irq_node() primitive irq: Make sure irq_desc for legacy irq get correct node setting genirq: Add prototype for handle_nested_irq() irq: Remove superfluous NULL pointer check in check_irq_resend() irq: Clean up by removing irqfixup MODULE_PARM_DESC() genirq: Fix comment describing suspend_device_irqs() genirq: Remove obsolete defines and typedefs
| * | | | | | pci/intr_remapping: Allocate irq_iommu on nodeYinghai Lu2009-08-291-11/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | make it use the node from irq_desc. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <4A95C392.5050903@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | | Merge branch 'core-debug-for-linus' of ↵Linus Torvalds2009-09-111-5/+14
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debug lockups: Improve lockup detection, fix generic arch fallback debug lockups: Improve lockup detection
| * | | | | | | debug lockups: Improve lockup detection, fix generic arch fallbackIngo Molnar2009-08-031-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Andrew noted, my previous patch ("debug lockups: Improve lockup detection") broke/removed SysRq-L support from architecture that do not provide a __trigger_all_cpu_backtrace implementation. Restore a fallback path and clean up the SysRq-L machinery a bit: - Rename the arch method to arch_trigger_all_cpu_backtrace() - Simplify the define - Document the method a bit - in the hope of more architectures adding support for it. [ The patch touches Sparc code for the rename. ] Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "David S. Miller" <davem@davemloft.net> LKML-Reference: <20090802140809.7ec4bb6b.akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | debug lockups: Improve lockup detectionIngo Molnar2009-08-021-6/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When debugging a recent lockup bug i found various deficiencies in how our current lockup detection helpers work: - SysRq-L is not very efficient as it uses a workqueue, hence it cannot punch through hard lockups and cannot see through most soft lockups either. - The SysRq-L code depends on the NMI watchdog - which is off by default. - We dont print backtraces from the RCU code's built-in 'RCU state machine is stuck' debug code. This debug code tends to be one of the first (and only) mechanisms that show that a lockup has occured. This patch changes the code so taht we: - Trigger the NMI backtrace code from SysRq-L instead of using a workqueue (which cannot punch through hard lockups) - Trigger print-all-CPU-backtraces from the RCU lockup detection code Also decouple the backtrace printing code from the NMI watchdog: - Dont use variable size cpumasks (it might not be initialized and they are a bit more fragile anyway) - Trigger an NMI immediately via an IPI, instead of waiting for the NMI tick to occur. This is a lot faster and can produce more relevant backtraces. It will also work if the NMI watchdog is disabled. - Dont print the 'dazed and confused' message when we print a backtrace from the NMI - Do a show_regs() plus a dump_stack() to get maximum info out of the dump. Worst-case we get two stacktraces - which is not a big deal. Sometimes, if register content is corrupted, the precise stack walker in show_regs() wont give us a full backtrace - in this case dump_stack() will do it. Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2009-09-1113-327/+1082
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (102 commits) crypto: sha-s390 - Fix warnings in import function crypto: vmac - New hash algorithm for intel_txt support crypto: api - Do not displace newly registered algorithms crypto: ansi_cprng - Fix module initialization crypto: xcbc - Fix alignment calculation of xcbc_tfm_ctx crypto: fips - Depend on ansi_cprng crypto: blkcipher - Do not use eseqiv on stream ciphers crypto: ctr - Use chainiv on raw counter mode Revert crypto: fips - Select CPRNG crypto: rng - Fix typo crypto: talitos - add support for 36 bit addressing crypto: talitos - align locks on cache lines crypto: talitos - simplify hmac data size calculation crypto: mv_cesa - Add support for Orion5X crypto engine crypto: cryptd - Add support to access underlaying shash crypto: gcm - Use GHASH digest algorithm crypto: ghash - Add GHASH digest algorithm for GCM crypto: authenc - Convert to ahash crypto: api - Fix aligned ctx helper crypto: hmac - Prehash ipad/opad ...
| * | | | | | | | crypto: talitos - add support for 36 bit addressingKim Phillips2009-08-132-29/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enabling extended addressing in the h/w requires we always assign the extended address component (eptr) of the talitos h/w pointer. This is for e500 based platforms with large memories. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | | | | | | crypto: talitos - align locks on cache linesKim Phillips2009-08-131-83/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | align channel access locks onto separate cache lines (for performance reasons). This is done by placing per-channel variables into their own private struct, and using the cacheline_aligned attribute within that struct. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | | | | | | crypto: talitos - simplify hmac data size calculationKim Phillips2009-08-131-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | don't do request->src vs. assoc pointer math - it's the same as adding assoclen and ivsize (just with more effort). Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | | | | | | crypto: mv_cesa - Add support for Orion5X crypto engineSebastian Andrzej Siewior2009-08-104-0/+739
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds support for Marvell's Cryptographic Engines and Security Accelerator (CESA) which can be found on a few SoC. Tested with dm-crypt. Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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