From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Fri, 9 Jun 2017 17:45:53 +0100 Subject: [PATCH v8 6/9] drivers: perf: hisi: Add support for Hisilicon Djtag driver In-Reply-To: References: <1495457312-237127-1-git-send-email-zhangshaokun@hisilicon.com> <20170608163519.GA19643@leverpostej> <8666a0fa-126d-e4a3-ac4b-7962f5d79942@huawei.com> <20170609154425.GH10665@leverpostej> Message-ID: <20170609164553.GB3043@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Jun 09, 2017 at 05:09:25PM +0100, John Garry wrote: > At this point, we would rather concentrate on our new chipset, which > is based on same perf HW architecture (so much code reuse), but uses > directly mapped registers and *no djtag* - in this, most of the > upstream effort from all parties is not wasted. FWIW, I suspect the MMIO-based PMU is going to have a smoother path upstream, assuming it's not shared with other agents (and we don't have another locking scheme to contend with). Thanks, Mark.