Messages in this thread | | | Date | Tue, 28 Mar 2006 15:38:06 -0600 | From | Clark Williams <> | Subject | boot hang in 2.6.16-rt[7-10] |
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I'm seeing a boot hang in the latest -rt series (from -rt7 to current - -rt10), on an Athlon64x2 (3800+). The kernel loads and boots up to calibrate_migration_costs then hangs. I'd give some console output, except that in their infinite wisdom, Gateway decided that this system didn't need a serial port. Gah...
I've prink'ed my way down into where measure_one tries to migrate a thread from cpu0 to cpu1 and calls set_cpus_allowed, where it then tries to wake the migration thread by calling wake_up_process, which just calls try_to_wake_up. Strangely, I see multiple printks from try_to_wake_up (like it's running multiple times) and the last print I see is that I'm returning a 1 from wake_up_process. Nothing after that.
I'd really like to see the boot messages before all those printk's I've scattered in sched.c, so I'm investigating using the parallel port as a console and just spewing that output into an xterm on the other end. Never done it before so I'm bumping my head against the wall a bit. Any advice would be appreciated.
Clark
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