WebMay 1, 2013 · _raw_spin_unlock_irqrestore is where they were enabled again. The next lines after the header are the trace itself. The header explains which is which. cmd: The name of the process in the trace. pid: The PID of that process. CPU#: The CPU which the process was running on. irqs-off: 'd' interrupts are disabled. '.' otherwise. WebWhen I added entry_SYSCALL_64_after_hwframe(), I left TRACE_IRQS_OFF before it. This means that users of entry_SYSCALL_64_after_hwframe() were responsible for invoking TRACE_IRQS_OFF, and the one and only user (Xen, added in the same commit) got it wrong. I think this would manifest as a warning if a Xen PV guest with
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WebJul 17, 2009 · 1) get it in a form to be used by perf (if possible) 2) add many more filters a) More ways to filter on the report side b) Add ways to filter on the recording side This … WebDevice IRQs are re-enabled during system resume, right before the “early” phase of resuming devices (that is, before starting to execute ->resume_early callbacks for devices). ... turns that logic off. Calling enable_irq_wake() causes suspend_device_irqs() to treat the given IRQ in a special way. Namely, the IRQ remains enabled, by on the ... granberg landscaping and concrete llc
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WebFeb 1, 2024 · IRQs (Interrupt Requests) allow the hardware to access the CPU even when it’s busy doing something else. So our keyboards, mice, and networking, for example, won’t stop working if we’re maxing out our CPU. WebThe preemptirqsoff tracer says that there are long IRQs OFF sections caused by _raw_spin_lock_irqsave. The comment in the source code says that the function is non … WebJul 17, 2009 · 1) get it in a form to be used by perf (if possible) 2) add many more filters a) More ways to filter on the report side b) Add ways to filter on the recording side This includes: Using the /debug/tracing/event/*/filter files Using the set_ftrace_filter/notrace files Using the set_ftrace_pid set_graph_function enabling the backtrace functions … granberg g106b bar-mount chain saw sharpener