Changes in irq.c

6e8d0237 - alpha: missing includes

Thu, 25 Jan 2024 14:22:01 +0000

alpha: missing includes... and missing externs in proto.hSigned-off-by: Al Viro Acked-by: Paul E. McKenney Acked-by: Matt Turner Signed-off-by: Arnd Bergmann List of files: /linux-6.15/arch/alpha/kernel/irq.c

073352e9 - genirq: Add and use an irq_data_update_affinity helper

Fri, 01 Jul 2022 20:00:54 +0000

genirq: Add and use an irq_data_update_affinity helperSome architectures and irqchip drivers modify the cpumask returned byirq_data_get_affinity_mask, usually by copying in to it. This isproblematic for uniprocessor configurations, where the affinity maskshould be constant, as it is known at compile time.Add and use a setter for the affinity mask, following the pattern ofirq_data_update_effective_affinity. This allows the getter function toreturn a const cpumask pointer.Signed-off-by: Samuel Holland Reviewed-by: Oleksandr Tyshchenko # Xen bitsSigned-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220701200056.46555-7-samuel@sholland.org List of files: /linux-6.15/arch/alpha/kernel/irq.c

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/alpha/kernel/irq.c

7c0f6ba6 - Replace with globally

Sat, 24 Dec 2016 19:46:01 +0000

Replace with globallyThis was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*' sed -i -e "s!$PATT!#include !" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)to do the replacement at the end of the merge window.Requested-by: Al Viro Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/kernel/irq.c

bd0b9ac4 - genirq: Remove irq argument from irq flow handlers

Mon, 14 Sep 2015 08:42:37 +0000

genirq: Remove irq argument from irq flow handlersMost interrupt flow handlers do not use the irq argument. Those fewwhich use it can retrieve the irq number from the irq descriptor.Remove the argument.Search and replace was done with coccinelle and some extra helperscripts around it. Thanks to Julia for her help!Signed-off-by: Thomas Gleixner Cc: Julia Lawall Cc: Jiang Liu List of files: /linux-6.15/arch/alpha/kernel/irq.c

95e432b9 - alpha/irq: Use access helper irq_data_get_affinity_mask()

Mon, 13 Jul 2015 20:08:38 +0000

alpha/irq: Use access helper irq_data_get_affinity_mask()This is a preparatory patch for moving irq_data struct members.Signed-off-by: Jiang Liu Cc: Matt Turner Link: http://lkml.kernel.org/r/20150713075508.821878421@linutronix.deSigned-off-by: Thomas Gleixner List of files: /linux-6.15/arch/alpha/kernel/irq.c

0bc25674 - alpha: delete non-required instances of

Tue, 21 Jan 2014 21:22:40 +0000

alpha: delete non-required instances of None of these files are actually using any __init type directivesand hence don't need to include . Most are just aleft over from __devinit and __cpuinit removal, or simply due tocode getting copied from one driver to the next.Acked-by: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: linux-alpha@vger.kernel.orgSigned-off-by: Paul Gortmaker Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

e20800fd - alpha: irq: run all handlers with interrupts disabled

Sun, 07 Apr 2013 09:36:11 +0000

alpha: irq: run all handlers with interrupts disabledLinux has expected that interrupt handlers are executed with localinterrupts disabled for a while now, so ensure that this is the case onAlpha even for non-device interrupts such as IPIs.Without this patch, secondary boot results in the following backtrace: warning: at kernel/softirq.c:139 __local_bh_enable+0xb8/0xd0() trace: __local_bh_enable+0xb8/0xd0 irq_enter+0x74/0xa0 scheduler_ipi+0x50/0x100 handle_ipi+0x84/0x260 do_entint+0x1ac/0x2e0 irq_exit+0x60/0xa0 handle_irq+0x98/0x100 do_entint+0x2c8/0x2e0 ret_from_sys_call+0x0/0x10 load_balance+0x3e4/0x870 cpu_idle+0x24/0x80 rcu_eqs_enter_common.isra.38+0x0/0x120 cpu_idle+0x40/0x80 rest_init+0xc0/0xe0 _stext+0x1c/0x20A similar dump occurs if you try to reboot using magic-sysrq.Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Reviewed-by: Matt Turner Signed-off-by: Will Deacon Signed-off-by: Michael Cree Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/kernel/irq.c

ec221208 - Disintegrate asm/system.h for Alpha

Wed, 28 Mar 2012 17:11:12 +0000

Disintegrate asm/system.h for AlphaDisintegrate asm/system.h for Alpha.Signed-off-by: David Howells cc: linux-alpha@vger.kernel.org List of files: /linux-6.15/arch/alpha/kernel/irq.c

a6e120ed - alpha: Use generic show_interrupts()

Fri, 25 Mar 2011 21:20:51 +0000

alpha: Use generic show_interrupts()The only subtle difference is that alpha uses ACTUAL_NR_IRQS andprints the IRQF_DISABLED flag.Change the generic implementation to deal with ACTUAL_NR_IRQS ifdefined.The IRQF_DISABLED printing is pointless, as we nowadays run allinterrupts with irqs disabled.Signed-off-by: Thomas Gleixner List of files: /linux-6.15/arch/alpha/kernel/irq.c

a9eb076b - alpha: Convert to new irq function names

Fri, 25 Mar 2011 21:17:31 +0000

alpha: Convert to new irq function namesScripted with coccinelle.Signed-off-by: Thomas Gleixner List of files: /linux-6.15/arch/alpha/kernel/irq.c

0b534cf3 - alpha: irq: Convert affinity to use irq_data

Sun, 06 Feb 2011 14:33:00 +0000

alpha: irq: Convert affinity to use irq_dataaffinity is moving to irq_data. Fix it up.Signed-off-by: Thomas Gleixner Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

0c7a720b - Fix typo in call to irq_to_desc()

Sun, 23 Jan 2011 12:40:47 +0000

Fix typo in call to irq_to_desc()Fix typo in call to irq_to_desc()Signed-off-by: Morten H. Larsen Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

f5de6ecc - alpha: fix WARN_ON in __local_bh_enable()

Wed, 12 Jan 2011 22:02:24 +0000

alpha: fix WARN_ON in __local_bh_enable()Interrupts ought to be disabled _before_ irq_enter().Signed-off-by: Ivan Kokshaysky Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

7d209c81 - alpha: kill off alpha_do_IRQ

Fri, 15 Oct 2010 02:31:34 +0000

alpha: kill off alpha_do_IRQGood riddance... Nuke a pile of redundant handlers that thegeneric code takes care of as well.Tested-by: Michael Cree Signed-off-by: Kyle McMartin Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

a891b393 - alpha: irq clean up

Fri, 15 Oct 2010 02:31:25 +0000

alpha: irq clean upStop touching irq_desc[irq] directly, instead use accessorfunctions provided. Use irq_has_action instead of directlytesting the irq_desc.Tested-by: Michael Cree Signed-off-by: Kyle McMartin Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

d5ccde0a - alpha: use set_irq_chip and push down __do_IRQ to the machine types

Fri, 15 Oct 2010 02:31:11 +0000

alpha: use set_irq_chip and push down __do_IRQ to the machine typesAlso kill superfluous IRQ_DISABLED initialization, since that's thedefault state of the irq_desc[i].status field.Tested-by: Michael Cree Signed-off-by: Kyle McMartin Signed-off-by: Matt Turner List of files: /linux-6.15/arch/alpha/kernel/irq.c

65d92064 - alpha: add performance monitor interrupt counter

Tue, 10 Aug 2010 00:20:05 +0000

alpha: add performance monitor interrupt counterThe following patches implement hardware performance events for the AlphaEV67 and later CPUs. I have had this running on a Compaq XP1000 (EV67,single CPU) for a few days now. Pretty cool -- discovered that the glibcexp2() library routine uses on average 985 cycles to execute 777 CPUinstructions whereas Compaq's CPML library version of exp2() uses onaverage 32 cycles to execute 47 CPU instructions to achieve the samething!This patch:Add performance monitor interrupt counternd and export the count to userspace via /proc/interrupts.Signed-off-by: Michael Cree Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Jay Estabrook Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/arch/alpha/kernel/irq.c

5a0e3ad6 - include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

Wed, 24 Mar 2010 08:04:11 +0000

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.hpercpu.h is included by sched.h and module.h and thus ends up beingincluded when building most .c files. percpu.h includes slab.h whichin turn includes gfp.h making everything defined by the two filesuniversally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare forthis change by updating users of gfp and slab facilities include thoseheaders directly instead of assuming availability. As this conversionneeds to touch large number of source files, the following script isused as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.pyThe script does the followings.* Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file.The conversion was done in the following steps.1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files.2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files.3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary.6. percpu.h was updated not to include slab.h.7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step6, I'm fairly confident about the coverage of this conversion patch.If there is a breakage, it's likely to be something in one of the archheaders which should be easily discoverable easily on most builds ofthe specific arch.Signed-off-by: Tejun Heo Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn List of files: /linux-6.15/arch/alpha/kernel/irq.c

239007b8 - genirq: Convert irq_desc.lock to raw_spinlock

Tue, 17 Nov 2009 15:46:45 +0000

genirq: Convert irq_desc.lock to raw_spinlockConvert locks which cannot be sleeping locks in preempt-rt toraw_spinlocks.Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra Acked-by: Ingo Molnar List of files: /linux-6.15/arch/alpha/kernel/irq.c