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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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