RE: [EXT] Re: [PATCH v6 4/4] perf/marvell: cn10k DDR perf event core ownership
From: Bharat Bhushan <bbhushan2@marvell.com>
Date: 2021-12-14 12:27:32
Also in:
linux-arm-kernel, lkml
From: Bharat Bhushan <bbhushan2@marvell.com>
Date: 2021-12-14 12:27:32
Also in:
linux-arm-kernel, lkml
-----Original Message----- From: Will Deacon <will@kernel.org> Sent: Tuesday, December 14, 2021 5:55 PM To: Bharat Bhushan <bbhushan2@marvell.com> Cc: mark.rutland@arm.com; robh+dt@kernel.org; Bhaskara Budiredla [off-list ref]; Sunil Kovvuri Goutham [off-list ref]; linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org; linux- kernel@vger.kernel.org Subject: [EXT] Re: [PATCH v6 4/4] perf/marvell: cn10k DDR perf event core ownership External Email ---------------------------------------------------------------------- On Fri, Oct 29, 2021 at 05:26:43PM +0530, Bharat Bhushan wrote:quoted
As DDR perf event counters are not per core, so they should be accessed only by one core at a time. Select new core when previously owning core is going offline. Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com> --- v1->v6 - No Change drivers/perf/marvell_cn10k_ddr_pmu.c | 50 ++++++++++++++++++++++++++-- include/linux/cpuhotplug.h | 1 + 2 files changed, 49 insertions(+), 2 deletions(-)I don't think the driver is much use without this patch, so please can you move the Kconfig stuff to a patch at the end so that the driver can't be enabled in a broken state half way through the series?
Okay, will change. Thanks -Bharat
Will