On 06/17/2011 02:25 AM, Jan Kiszka wrote: > Derived from kvm-tool patch > http://thread.gmane.org/gmane.comp.emulators.kvm.devel/74309 > > Ingo Molnar pointed out that sending the timer signal to the whole > process, just blocking it everywhere, is suboptimal with an increasing > number of threads. QEMU is also using this pattern so far. > > Linux provides a (non-portable) way to restrict the signal to a single > thread: We can use SIGEV_THREAD_ID unless we are forced to emulate > signalfd via an additional thread. That case could theoretically be > optimized as well, but it doesn't look worth bothering. > > Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
Reviewed-by: Richard Henderson <r...@twiddle.net> r~
