On 5/18/2016 9:44 AM, Peter Zijlstra wrote:
On Tue, Apr 05, 2016 at 01:38:35PM -0400, Chris Metcalf wrote:+void task_isolation_interrupt(struct task_struct *task, const char *buf) +{ + siginfo_t info = {}; + int sig; + + pr_warn("%s/%d: task_isolation strict mode violated by %s\n", + task->comm, task->pid, buf); +So the function name suggests this is called for interrupts, except its purpose is to deliver a signal.
Fair point. I'll name it task_isolation_deliver_signal() in the next patch series.
Now, in case of exceptions the violation isn't necessarily _by_ the task itself. You might want to change that to report the exception type/number instead of the affected task.
Well, we do report whatever exception information we have. For example a page fault exception will report the address or whatever other info is handy; it's easy to tune since it's just a vsnprintf of some varargs from the architecture layer. For things like IPIs or TLB invalidations or whatever, the code currently just reports "interrupt"; I could arrange to pass down more informative varargs from the caller for that as well. Let me look into it. -- Chris Metcalf, Mellanox Technologies http://www.mellanox.com
