lwn.git/drivers/infiniband/hw/ehca/ehca_irq.c, branch docs-fixes

IB/ehca: Deprecate driver, move to staging, schedule deletion

2015-09-11T22:13:35+00:00

The ehca driver is only supported on IBM machines with a custom EBus. As they have opted to build their newer machines using more industry standard technology and haven't really been pushing EBus capable machines for a while, this driver can now safely be moved to the staging area and scheduled for eventual removal. This plan was brought to IBM's attention and received their sign-off. Cc: alexs@linux.vnet.ibm.com Cc: hnguyen@de.ibm.com Cc: raisch@de.ibm.com Cc: stefan.roscher@de.ibm.com Signed-off-by: Doug Ledford

infiniband: ehca: Fix compiler warnings

2012-08-20T15:11:04+00:00

Fix comp_task() to return void to match smp_hotplug_thread's thread_fn member, and adjust indirection on the ->cpu_comp_threads per-CPU member of the ehca_comp_pool structure. Reported-by: Stephen Rothwell Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney Tested-by: Stephen Rothwell

infiniband: ehca: Fix while->do-while conversion typo

2012-08-20T15:00:23+00:00

This commit just adds a needed semicolon. Reported-by: Stephen Rothwell Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney Tested-by: Stephen Rothwell

infiniband: Ehca: Use hotplug thread infrastructure

2012-08-13T15:01:08+00:00

Get rid of the hotplug notifiers and use the generic hotplug thread infrastructure. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Srivatsa S. Bhat Cc: Rusty Russell Reviewed-by: Paul E. McKenney Cc: Namhyung Kim Link: http://lkml.kernel.org/r/20120716103948.775527032@linutronix.de Signed-off-by: Thomas Gleixner

IB/ehca: Use kthread_create_on_node()

2012-02-26T01:47:21+00:00

Since create_comp_task() creates percpu kthread, it makes sense to use kthread_create_on_node() to get proper NUMA affinity for kthread stack. Signed-off-by: Eric Dumazet Acked-by: Hoang-Nam Nguyen Signed-off-by: Roland Dreier

ehca: convert cpu notifier to return encapsulate errno value

2010-05-27T16:12:48+00:00

By the previous modification, the cpu notifier can return encapsulate errno value. This converts the cpu notifiers for ehca. Signed-off-by: Akinobu Mita Cc: Hoang-Nam Nguyen Cc: Christoph Raisch Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

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

2010-03-30T13:02:32+00:00

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 Guess-its-ok-by: Christoph Lameter Cc: Ingo Molnar Cc: Lee Schermerhorn

IB/ehca: Do not turn off irqs in tasklet context

2010-02-12T23:22:37+00:00

The irq_spinlock is only taken in tasklet context, so it is safe not to disable hardware interrupts. Signed-off-by: Alexander Schmidt Signed-off-by: Roland Dreier

this_cpu: Straight transformations

2009-10-03T10:48:22+00:00

Use this_cpu_ptr and __this_cpu_ptr in locations where straight transformations are possible because per_cpu_ptr is used with either smp_processor_id() or raw_smp_processor_id(). cc: David Howells Acked-by: Tejun Heo cc: Ingo Molnar cc: Rusty Russell cc: Eric Dumazet Signed-off-by: Christoph Lameter Signed-off-by: Tejun Heo

infiniband: Remove void casts

2009-05-13T23:53:39+00:00

Remove uneeded casts of void *. Signed-off-by: Jack Stone Signed-off-by: Roland Dreier