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From: | Paolo Bonzini |
Subject: | Re: [Qemu-block] [Qemu-devel] [PATCH 09/17] util: add stats64 module |
Date: | Thu, 4 May 2017 09:38:06 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
On 04/05/2017 09:36, Fam Zheng wrote: >> + >> + /* If there is a concurrent writer, wait for it. */ >> + while (atomic_read(&s->lock) & 1) { >> + g_usleep(5); > What's the difference of g_usleep() from cpu_relax() in > qemu_co_mutex_lock_unlock? cpu_relax() did not exist when I wrote this patch. :) I'll change it. Paolo
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