kernel/include/asm-generic/hardirq.h, branch linux-3.0.y

irq: Fix circular headers dependency

2010-09-09T19:28:58Z

asm-generic/hardirq.h needs asm/irq.h which might include linux/interrupt.h as in the sparc 32 case. At this point we need irq_cpustat generic definitions, but those are included later in asm-generic/hardirq.h. Then delay a bit the inclusion of irq.h from asm-generic/hardirq.h, it doesn't need to be included early. This fixes: include/linux/interrupt.h: In function '__raise_softirq_irqoff': include/linux/interrupt.h:414: error: implicit declaration of function 'local_softirq_pending' include/linux/interrupt.h:414: error: lvalue required as left operand of assignment Reported-by: Ingo Molnar Signed-off-by: Frederic Weisbecker Cc: Lai Jiangshan Cc: Koki Sanagi Cc: mathieu.desnoyers@efficios.com Cc: rostedt@goodmis.org Cc: nhorman@tuxdriver.com Cc: scott.a.mcmillan@intel.com Cc: eric.dumazet@gmail.com Cc: kaneshige.kenji@jp.fujitsu.com Cc: davem@davemloft.net Cc: izumi.taku@jp.fujitsu.com Cc: kosaki.motohiro@jp.fujitsu.com LKML-Reference: <20100908122557.GA5310@nowhere> Signed-off-by: Ingo Molnar

IRQ: Change __softirq_pending to unsigned int in asm-generic/hardirq.h.

2009-10-09T20:38:21Z

Since the beginnings in aafe4dbed0bf6cbdb2e9f03e1d42f8a540d8541d ("asm-generic: add generic versions of common headers") the generic version of defined __softirq_pending as unsigned long. Which is different from other architectures for no apparent good reason and was causing the following warning: kernel/time/tick-sched.c: In function 'tick_nohz_stop_sched_tick': kernel/time/tick-sched.c:261: warning: format '%02x' expects type 'unsigned int', but argument 2 has type 'long unsigned int' Reported and initial patch by Wu Zhangjin . Signed-off-by: Ralf Baechle Acked-by: Arnd Bergmann [ Arnd points out that we really should make sure parisc and alpha are ok with this, since they have also been converted to use the generic hardirq.h file. But neither seems to use it, although parisc does build a IRQSTAT_SIRQ_PEND #define into asm-offsets - but that also appears unused.. - Linus ] Signed-off-by: Linus Torvalds

asm-generic: drop HARDIRQ_BITS definition from hardirq.h

2009-06-19T12:58:09Z

Architechtures normally don't need to set a HARDIRQ_BITS unless they have hardcoded a specific value in assembly. This drops the definition from asm-generic/hardirq.h, which results in linux/hardirq.h setting its default of 10. Both the old default of 8 and the linux/hardirq.h default of 10 are sufficient because they only limit the number of nested hardirqs, and we normally run out of stack space much earlier than exceeding 256 or even 1024 nested interrupts. Reported-by: Mike Frysinger Acked-by: Steven Rostedt Signed-off-by: Arnd Bergmann

asm-generic: add generic versions of common headers

2009-06-11T19:02:37Z

These are all kernel internal interfaces that get copied around a lot. In most cases, architectures can provide their own optimized versions, but these generic versions can work as well. I have tried to use the most common contents of each header to allow existing architectures to migrate easily. Thanks to Remis for suggesting a number of cleanups. Signed-off-by: Remis Lima Baima Signed-off-by: Arnd Bergmann