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2019-11-21rackmeter: Use vtime aware kcpustat accessorFrederic Weisbecker1-3/+4
Now that we have a vtime safe kcpustat accessor, use it to fetch CPUTIME_NICE and fix frozen kcpustat values on nohz_full CPUs. Reported-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wanpeng Li <wanpengli@tencent.com> Link: https://lkml.kernel.org/r/20191121024430.19938-7-frederic@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 246Thomas Gleixner1-3/+1
Based on 1 normalized pattern(s): released under the term of the gnu gpl v2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 16 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204654.922331175@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-22macintosh: Use of_node_name_{eq, prefix} for node name comparisonsRob Herring1-6/+7
Convert string compares of DT node names to use of_node_name_{eq,prefix} helpers instead. This removes direct access to the node name pointer. This changes a single case insensitive node name comparison to case sensitive for "ata4". This is the only instance of a case insensitive comparison for all the open coded node name comparisons on powerpc. Searching the commit history, there doesn't appear to be any reason for it to be case insensitive. A couple of open coded iterating thru the child node names are converted to use for_each_child_of_node() instead. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-31drivers: macintosh: rack-meter: really fix bogus memsetsAaro Koskinen1-2/+2
We should zero an array using sizeof instead of number of elements. Fixes the following compiler (GCC 7.3.0) warnings: drivers/macintosh/rack-meter.c: In function 'rackmeter_do_pause': drivers/macintosh/rack-meter.c:157:2: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size] drivers/macintosh/rack-meter.c:158:2: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size] Fixes: 4f7bef7a9f69 ("drivers: macintosh: rack-meter: fix bogus memsets") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-20powerpc: Use sizeof(*foo) rather than sizeof(struct foo)Markus Elfring1-1/+1
It's slightly less error prone to use sizeof(*foo) rather than specifying the type. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> [mpe: Consolidate into one patch, rewrite change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-09-01macintosh: Convert to using %pOF instead of full_nameRob Herring1-6/+6
Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org> [mpe: Also convert the two cases inside #if 0] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-08-21macintosh/rack-meter: Make of_device_ids constArvind Yadav1-1/+1
of_device_ids are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const structs as const. File size before: text data bss dec hex filename 407 576 0 983 3d7 drivers/macintosh/rack-meter.o File size after constify rackmeter_match. text data bss dec hex filename 807 176 0 983 3d7 drivers/macintosh/rack-meter.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-02-01macintosh/rack-meter: Convert cputime64_t use to u64Frederic Weisbecker1-15/+15
cputime_t is going to be removed and replaced by nsecs units, so convert the drivers/macintosh/rack-meter.c use to u64.. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Wanpeng Li <wanpeng.li@hotmail.com> Link: http://lkml.kernel.org/r/1485832191-26889-5-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-02-01sched/cputime: Convert kcpustat to nsecsFrederic Weisbecker1-1/+1
Kernel CPU stats are stored in cputime_t which is an architecture defined type, and hence a bit opaque and requiring accessors and mutators for any operation. Converting them to nsecs simplifies the code and is one step toward the removal of cputime_t in the core code. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Wanpeng Li <wanpeng.li@hotmail.com> Link: http://lkml.kernel.org/r/1485832191-26889-4-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-09-20powerpc: Remove all usages of NO_IRQMichael Ellerman1-1/+1
NO_IRQ has been == 0 on powerpc for just over ten years (since commit 0ebfff1491ef ("[POWERPC] Add new interrupt mapping core and change platforms to use it")). It's also 0 on most other arches. Although it's fairly harmless, every now and then it causes confusion when a driver is built on powerpc and another arch which doesn't define NO_IRQ. There's at least 6 definitions of NO_IRQ in drivers/, at least some of which are to work around that problem. So we'd like to remove it. This is fairly trivial in the arch code, we just convert: if (irq == NO_IRQ) to if (!irq) if (irq != NO_IRQ) to if (irq) irq = NO_IRQ; to irq = 0; return NO_IRQ; to return 0; And a few other odd cases as well. At least for now we keep the #define NO_IRQ, because there is driver code that uses NO_IRQ and the fixes to remove those will go via other trees. Note we also change some occurrences in PPC sound drivers, drivers/ps3, and drivers/macintosh. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-04-12drivers: macintosh: rack-meter: fix bogus memsetsAaro Koskinen1-2/+2
Fix bogus memsets pointed out by sparse: linux-v4.3/drivers/macintosh/rack-meter.c:157:15: warning: memset with byte count of 0 linux-v4.3/drivers/macintosh/rack-meter.c:158:15: warning: memset with byte count of 0 Probably "&" is mistyped "*"; use ARRAY_SIZE to make it more safe. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-04-12drivers: macintosh: rack-meter: limit idle ticks to total ticksAaro Koskinen1-0/+1
Limit idle ticks to total ticks. This prevents the annoying rackmeter leds fully ON / OFF blinking state that happens on fully idling G5 Xserve systems. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-11-26powerpc/rackmeter: Fix module autoload for OF platform driverLuis de Bethencourt1-0/+1
This platform driver has a OF device ID table but the OF module alias information is not created so module autoloading won't work. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-23powerpc: Move Power Macintosh drivers to generic byteswappersDavid Gibson1-15/+15
ppc has special instruction forms to efficiently load and store values in non-native endianness. These can be accessed via the arch-specific {ld,st}_le{16,32}() inlines in arch/powerpc/include/asm/swab.h. However, gcc is perfectly capable of generating the byte-reversing load/store instructions when using the normal, generic cpu_to_le*() and le*_to_cpu() functions eaning the arch-specific functions don't have much point. Worse the "le" in the names of the arch specific functions is now misleading, because they always generate byte-reversing forms, but some ppc machines can now run a little-endian kernel. To start getting rid of the arch-specific forms, this patch removes them from all the old Power Macintosh drivers, replacing them with the generic byteswappers. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-10-09drivers: clean-up prom.h implicit includesRob Herring1-0/+2
Powerpc is a mess of implicit includes by prom.h. Add the necessary explicit includes to drivers in preparation of prom.h cleanup. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.org>
2013-01-03Drivers: macintosh: remove __dev* attributes.Greg Kroah-Hartman1-6/+6
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2011-12-19Merge branch 'sched/core' of ↵Martin Schwidefsky1-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into cputime-tip Conflicts: drivers/cpufreq/cpufreq_conservative.c drivers/cpufreq/cpufreq_ondemand.c drivers/macintosh/rack-meter.c fs/proc/stat.c fs/proc/uptime.c kernel/sched/core.c
2011-12-15[S390] cputime: add sparse checking and cleanupMartin Schwidefsky1-7/+4
Make cputime_t and cputime64_t nocast to enable sparse checking to detect incorrect use of cputime. Drop the cputime macros for simple scalar operations. The conversion macros are still needed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-12-06sched/accounting: Change cpustat fields to an arrayGlauber Costa1-4/+4
This patch changes fields in cpustat from a structure, to an u64 array. Math gets easier, and the code is more flexible. Signed-off-by: Glauber Costa <glommer@parallels.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Paul Tuner <pjt@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1322498719-2255-2-git-send-email-glommer@parallels.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-03-02powerpc/macintosh: Fix __devexit annotation in rack-meter.cGrant Likely1-1/+1
The following warning was seen building rack-meter.c WARNING: drivers/built-in.o(.text+0xac784): Section mismatch in reference from the function rackmeter_shutdown() to the function .devexit.text:rackmeter_stop_cpu_sniffer() The function rackmeter_shutdown() references a function in an exit section. Often the function rackmeter_stop_cpu_sniffer() has valid usage outside the exit section and the fix is to remove the __devexit annotation of rackmeter_stop_cpu_sniffer. This patch resolves the warning by removing the __devexit annotation from rackmeter_stop_cpu_sniffer(). Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: linuxppc-dev@lists.ozlabs.org Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-12-15workqueue: convert cancel_rearming_delayed_work[queue]() users to ↵Tejun Heo1-2/+2
cancel_delayed_work_sync() cancel_rearming_delayed_work[queue]() has been superceded by cancel_delayed_work_sync() quite some time ago. Convert all the in-kernel users. The conversions are completely equivalent and trivial. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: "David S. Miller" <davem@davemloft.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: netdev@vger.kernel.org Cc: Anton Vorontsov <cbou@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Cc: Alex Elder <aelder@sgi.com> Cc: xfs-masters@oss.sgi.com Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: netfilter-devel@vger.kernel.org Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: linux-nfs@vger.kernel.org
2010-06-02powerpc/macio: Fix probing of macio devices by using the right of match tableBenjamin Herrenschmidt1-3/+5
Grant patches added an of mach table to struct device_driver. However, while he changed the macio device code to use that, he left the match table pointer in struct macio_driver and didn't update drivers to use the "new" one, thus breaking the probing. This completes the change by moving all drivers to setup the "new" one, removing all traces of the old one, and while at it (since it changes the exact same locations), I also remove two other duplicates from struct driver which are the name and owner fields. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-05-18of: Always use 'struct device.of_node' to get device node pointer.Grant Likely1-2/+2
The following structure elements duplicate the information in 'struct device.of_node' and so are being eliminated. This patch makes all readers of these elements use device.of_node instead. (struct of_device *)->node (struct dev_archdata *)->prom_node (sparc) (struct dev_archdata *)->of_node (powerpc & microblaze) Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo1-0/+1
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The 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 allmodconfig 8. 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 step 6, 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 arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-09-21trivial: remove unnecessary semicolonsJoe Perches1-1/+1
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2008-11-30rackmeter section fixesAl Viro1-5/+5
* rackmeter_remove() reference needs devexit_p * rackmeter_setup() is calls devinit and is called only from devinit Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-22[POWERPC] Clean up duplicate includes in drivers/macintosh/Jesper Juhl1-1/+0
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-27[POWERPC] Rename get_property to of_get_property: partial driversStephen Rothwell1-1/+1
This does drivers/machintosh and the hvc code. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-26Revert "[POWERPC] Rename get_property to of_get_property: drivers"Paul Mackerras1-1/+1
This reverts commit d05c7a80cf39ae7d0f8d0c3e47c93d51fcd393d3, which included changes which should go via other subsystem maintainers.
2007-04-13[POWERPC] Rename get_property to of_get_property: driversStephen Rothwell1-1/+1
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-02-09[PATCH] offsetof is size_tAl Viro1-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-05WorkQueue: Fix up arch-specific work items where possibleDavid Howells1-6/+10
Fix up arch-specific work items where possible to use the new work_struct and delayed_work structs. Three places that enqueue bits of their stack and then return have been marked with #error as this is not permitted. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-04[POWERPC] Xserve cpu-meter driverBenjamin Herrenschmidt1-0/+612
This is a small driver for the Xserve G5 CPU-meter blue LEDs on the front-panel. It might work on the Xserve G4 as well though that was not tested. It's pretty basic and could use some improvements if somebody cares doing them. :) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>