linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2013-11-13	hardirq: Make hardirq bits generic	Thomas Gleixner	1	-2/+0
	There is no reason for per arch hardirq bits. Make them all generic Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20130917183628.534494408@linutronix.de
2013-08-22	s390: convert interrupt handling to use generic hardirq	Martin Schwidefsky	1	-0/+5
	With the introduction of PCI it became apparent that s390 should convert to generic hardirqs as too many drivers do not have the correct dependency for GENERIC_HARDIRQS. On the architecture level s390 does not have irq lines. It has external interrupts, I/O interrupts and adapter interrupts. This patch hard-codes all external interrupts as irq #1, all I/O interrupts as irq #2 and all adapter interrupts as irq #3. The additional information from the lowcore associated with the interrupt is stored in the pt_regs of the interrupt frame, where the interrupt handler can pick it up. For PCI/MSI interrupts the adapter interrupt handler scans the relevant bit fields and calls generic_handle_irq with the virtual irq number for the MSI interrupt. Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-07-20	s390/comments: unify copyright messages and remove file names	Heiko Carstens	1	-3/+1
	Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2012-03-11	[S390] irq: set __ARCH_IRQ_EXIT_IRQS_DISABLED	Heiko Carstens	1	-0/+1
	Set __ARCH_IRQ_EXIT_IRQS_DISABLED in order to optimize irq_exit() a bit, since we call __do_softirq() instead of do_softirq(). This saves several needless checks, pointless interrupt disabling and an extra branch. If do_softirq() gets called from process context we still switch to the async stack. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-01-05	[S390] time: move local_tick_enable()/disable() to timex.h	Heiko Carstens	1	-16/+0
	Move the two functions to timex.h where they make more sense than in hardirq.h. No functional change. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2010-10-19	[S390] hardirq: remove pointless header file includes	Heiko Carstens	1	-4/+0
	Remove a couple of pointless header file includes. Fixes a compile bug caused by header file include dependencies with "irq: Add tracepoint to softirq_raise" within linux-next. Reported-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [ cherry-picked from the s390 tree to fix "2bf2160: irq: Add tracepoint to softirq_raise" ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-11	[S390] remove unused irq_cpustat_t defintion	Christoph Hellwig	1	-7/+0
	No need to defined a irq_cpustat_t type if __ARCH_IRQ_STAT is defined. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-08-01	[S390] move include/asm-s390 to arch/s390/include/asm	Martin Schwidefsky	1	-0/+51
	Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>