Date: Mon, 23 Dec 2013 20:37:14 -0800 From: Adrian Chadd <adrian@freebsd.org> To: "Rang, Anton" <anton.rang@isilon.com> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: A tweak to HWPMC hooks to improve code generation Message-ID: <CAJ-VmokP9WKAMwP3Yf9T17UqQ1cMrxDPQzo%2BPU_B0bZr_YDR=w@mail.gmail.com> In-Reply-To: <F21EDC44C64DB34B90AF485AC3CEDD4B27F9DE7B@MX104CL01.corp.emc.com> References: <F21EDC44C64DB34B90AF485AC3CEDD4B27F9DE7B@MX104CL01.corp.emc.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hm! Cool! I'll give this a spin tomorrow on my frequently-very-lock-busy boxes and get back to you. -a On 23 December 2013 09:52, Rang, Anton <anton.rang@isilon.com> wrote: > The HWPMC hooks are never invoked except when using the soft PMC feature = for performance monitoring. This trivial patch hints as much to the compile= r, which then moves some fairly lengthy code sequences out of the locking p= rimitives (in particular), reducing their runtime footprint. > > This patch was reviewed by Attilio Rao. > > Anton > > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= "
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAJ-VmokP9WKAMwP3Yf9T17UqQ1cMrxDPQzo%2BPU_B0bZr_YDR=w>