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54d5d42404
When handling writes to /proc/irq, current code is re-programming rte entries directly. This is not recommended and could potentially cause chipset's to lockup, or cause missing interrupts. CONFIG_IRQ_BALANCE does this correctly, where it re-programs only when the interrupt is pending. The same needs to be done for /proc/irq handling as well. Otherwise user space irq balancers are really not doing the right thing. - Changed pending_irq_balance_cpumask to pending_irq_migrate_cpumask for lack of a generic name. - added move_irq out of IRQ_BALANCE, and added this same to X86_64 - Added new proc handler for write, so we can do deferred write at irq handling time. - Display of /proc/irq/XX/smp_affinity used to display CPU_MASKALL, instead it now shows only active cpu masks, or exactly what was set. - Provided a common move_irq implementation, instead of duplicating when using generic irq framework. Tested on i386/x86_64 and ia64 with CONFIG_PCI_MSI turned on and off. Tested UP builds as well. MSI testing: tbd: I have cards, need to look for a x-over cable, although I did test an earlier version of this patch. Will test in a couple days. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Zwane Mwaikambo <zwane@holomorphy.com> Grudgingly-acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org> Signed-off-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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| .. | ||
| acpi | ||
| cpufreq | ||
| aperture.c | ||
| apic.c | ||
| asm-offsets.c | ||
| crash.c | ||
| e820.c | ||
| early_printk.c | ||
| entry.S | ||
| genapic_cluster.c | ||
| genapic_flat.c | ||
| genapic.c | ||
| head64.c | ||
| head.S | ||
| i387.c | ||
| i8259.c | ||
| init_task.c | ||
| io_apic.c | ||
| ioport.c | ||
| irq.c | ||
| kprobes.c | ||
| ldt.c | ||
| machine_kexec.c | ||
| Makefile | ||
| mce_intel.c | ||
| mce.c | ||
| module.c | ||
| mpparse.c | ||
| msr.c | ||
| nmi.c | ||
| pci-dma.c | ||
| pci-gart.c | ||
| pci-nommu.c | ||
| pmtimer.c | ||
| process.c | ||
| ptrace.c | ||
| reboot.c | ||
| relocate_kernel.S | ||
| setup64.c | ||
| setup.c | ||
| signal.c | ||
| smp.c | ||
| smpboot.c | ||
| suspend_asm.S | ||
| suspend.c | ||
| sys_x86_64.c | ||
| syscall.c | ||
| time.c | ||
| trampoline.S | ||
| traps.c | ||
| vmlinux.lds.S | ||
| vsyscall.c | ||
| x8664_ksyms.c | ||