linux/kernel/irq/proc.c, branch v3.0.86

irq: Remove smp_affinity_list when unregister irq proc

2011-05-26T11:15:28Z

commit 4b06042(bitmap, irq: add smp_affinity_list interface to /proc/irq) causes the following warning: [ 274.239500] WARNING: at fs/proc/generic.c:850 remove_proc_entry+0x24c/0x27a() [ 274.251761] remove_proc_entry: removing non-empty directory 'irq/184', leaking at least 'smp_affinity_list' Remove the new file in the exit path. Signed-off-by: Yinghai Lu Cc: Mike Travis Link: http://lkml.kernel.org/r/4DDDE094.6050505@kernel.org Signed-off-by: Thomas Gleixner

bitmap, irq: add smp_affinity_list interface to /proc/irq

2011-05-25T15:39:45Z

Manually adjusting the smp_affinity for IRQ's becomes unwieldy when the cpu count is large. Setting smp affinity to cpus 256 to 263 would be: echo 000000ff,00000000,00000000,00000000,00000000,00000000,00000000,00000000 > smp_affinity instead of: echo 256-263 > smp_affinity_list Think about what it looks like for cpus around say, 4088 to 4095. We already have many alternate "list" interfaces: /sys/devices/system/cpu/cpuX/indexY/shared_cpu_list /sys/devices/system/cpu/cpuX/topology/thread_siblings_list /sys/devices/system/cpu/cpuX/topology/core_siblings_list /sys/devices/system/node/nodeX/cpulist /sys/devices/pci***/***/local_cpulist Add a companion interface, smp_affinity_list to use cpu lists instead of cpu maps. This conforms to other companion interfaces where both a map and a list interface exists. This required adding a bitmap_parselist_user() function in a manner similar to the bitmap_parse_user() function. [akpm@linux-foundation.org: make __bitmap_parselist() static] Signed-off-by: Mike Travis Cc: Thomas Gleixner Cc: Jack Steiner Cc: Lee Schermerhorn Cc: Andy Shevchenko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

genirq: Fix typo CONFIG_GENIRC_IRQ_SHOW_LEVEL

2011-05-02T19:16:37Z

commit ab7798ffcf98b11a9525cf65bacdae3fd58d357f ("genirq: Expand generic show_interrupts()") added the Kconfig option GENERIC_IRQ_SHOW_LEVEL to accomodate PowerPC, but this doesn't actually enable the functionality due to a typo in the #ifdef check. Signed-off-by: Geert Uytterhoeven Cc: Linux/PPC Development Link: http://lkml.kernel.org/r/%3Calpine.DEB.2.00.1104302251370.19068%40ayla.of.borg%3E Signed-off-by: Thomas Gleixner

alpha: Use generic show_interrupts()

2011-03-29T12:47:58Z

The only subtle difference is that alpha uses ACTUAL_NR_IRQS and prints the IRQF_DISABLED flag. Change the generic implementation to deal with ACTUAL_NR_IRQS if defined. The IRQF_DISABLED printing is pointless, as we nowadays run all interrupts with irqs disabled. Signed-off-by: Thomas Gleixner

genirq: Expand generic show_interrupts()

2011-03-25T16:04:20Z

Some archs want to print extra information for certain irq_chips which is per irq and not per chip. Allow them to provide a chip callback to print the chip name and the extra information. PowerPC wants to print the LEVEL/EDGE type information. Make it configurable. Signed-off-by: Thomas Gleixner

genirq: show_interrupts: Check desc->name before printing it blindly

2011-03-17T14:52:19Z

desc->name is not required and not used by all architectures. Signed-off-by: Thomas Gleixner

genirq: Reuse existing can set affinty check

2011-02-19T11:58:20Z

Add a !desc check while at it. Signed-off-by: Thomas Gleixner

genirq: Add IRQ_MOVE_PENDING to irq_data.state

2011-02-19T11:58:18Z

chip implementations need to know about it. Keep status in sync until all users are fixed. Accessor function: irqd_is_setaffinity_pending(irqdata) Coders who access them directly will be tracked down and slapped with stinking trouts. Signed-off-by: Thomas Gleixner

genirq: Implement generic irq_show_interrupts()

2011-02-19T11:58:13Z

All archs implement show_interrupts() in more or less the same way. That's tons of duplicated code with different bugs with no value. Implement a generic version and deprecate show_interrupts() Unfortunately we need some ifdeffery for !GENERIC_HARDIRQ archs. Signed-off-by: Thomas Gleixner

genirq: Do not copy affinity before set

2011-02-19T11:58:07Z

While rumaging through arch code I found that there are a few workarounds which deal with the fact that the initial affinity setting from request_irq() copies the mask into irq_data->affinity before the chip code is called. In the normal path we unconditionally copy the mask when the chip code returns 0. Copy after the code is called and add a return code IRQ_SET_MASK_OK_NOCOPY for the chip functions, which prevents the copy. That way we see the real mask when the chip function decided to truncate it further as some arches do. IRQ_SET_MASK_OK is 0, which is the current behaviour. Signed-off-by: Thomas Gleixner