Date: Tue, 9 Jun 2015 11:16:10 +0100 From: Ruslan Bukin <br@freebsd.org> To: John Baldwin <jhb@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r284153 - head/sys/kern Message-ID: <20150609101610.GA47083@bsdpad.com> In-Reply-To: <1554833.IUNnl2bGYK@ralph.baldwin.cx> References: <201506081406.t58E6mvA033492@svn.freebsd.org> <20150608144629.GA37834@bsdpad.com> <1554833.IUNnl2bGYK@ralph.baldwin.cx>
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On Mon, Jun 08, 2015 at 02:04:45PM -0400, John Baldwin wrote: > On Monday, June 08, 2015 03:46:29 PM Ruslan Bukin wrote: > > For some reason it hangs for me after 'random' lines on arm64 > > Are you using dtrace? It looks like sdt was using the public symbol before > but in a context where the caller held the lock. I will revert this for now. > I think I can perhaps make it 'automatic' by having it acquire a read lock > (possibly recursing) if it doesn't already hold a write lock. > Yes, I'm using DTrace. And you right: if I remove dtrace_sdt from kernel, then the same revision works fine for me. Ruslan
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