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> kpsi...@kernel.org; linux-ker...@vger.kernel.org; netdev@vger.kernel.org;
> b...@vger.kernel.org
> Subject: Re: [PATCH] seccomp: Improve performance by optimizing memory
> barrier
>
> On Mon, Feb 01, 2021 at 08:49:41PM +0800
On Mon, Feb 01, 2021 at 08:49:41PM +0800, wanghongzhe wrote:
> If a thread(A)'s TSYNC flag is set from seccomp(), then it will
> synchronize its seccomp filter to other threads(B) in same thread
> group. To avoid race condition, seccomp puts rmb() between
> reading the mode and filter in seccomp ch
>> On Feb 1, 2021, at 4:06 AM, wanghongzhe wrote:
>>
>> If a thread(A)'s TSYNC flag is set from seccomp(), then it will
>> synchronize its seccomp filter to other threads(B) in same thread
>> group. To avoid race condition, seccomp puts rmb() between reading the
>> mode and filter in seccomp
> On Feb 1, 2021, at 4:06 AM, wanghongzhe wrote:
>
> If a thread(A)'s TSYNC flag is set from seccomp(), then it will
> synchronize its seccomp filter to other threads(B) in same thread
> group. To avoid race condition, seccomp puts rmb() between
> reading the mode and filter in seccomp check
If a thread(A)'s TSYNC flag is set from seccomp(), then it will
synchronize its seccomp filter to other threads(B) in same thread
group. To avoid race condition, seccomp puts rmb() between
reading the mode and filter in seccomp check patch(in B thread).
As a result, every syscall's seccomp check is
If a thread(A)'s TSYNC flag is set from seccomp(), then it will
synchronize its seccomp filter to other threads(B) in same thread
group. To avoid race condition, seccomp puts rmb() between
reading the mode and filter in seccomp check patch(in B thread).
As a result, every syscall's seccomp check is
