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authorRusty Russell <rusty@rustcorp.com.au>2009-06-12 22:27:02 -0600
committerRusty Russell <rusty@rustcorp.com.au>2009-06-12 22:27:02 +0930
commitabd41f037e1a64543000ed73b42f616d04d92700 (patch)
treed9013e66f4d8fc66fc92ce0587f8d126e156b253 /tools/perf/util/run-command.c
parentebf9a5a99c1a464afe0b4dfa64416fc8b273bc5c (diff)
lguest: fix race in halt code
When the Guest does the LHCALL_HALT hypercall, we go to sleep, expecting that a timer or the Waker will wake_up_process() us. But we do it in a stupid way, leaving a classic missing wakeup race. So split maybe_do_interrupt() into interrupt_pending() and try_deliver_interrupt(), and check maybe_do_interrupt() and the "break_out" flag before calling schedule. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'tools/perf/util/run-command.c')
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