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From: John Garry <john.garry@huawei.com>
To: Yicong Yang <yangyicong@huawei.com>,
	Yicong Yang <yangyicong@hisilicon.com>,
	<gregkh@linuxfoundation.org>, <helgaas@kernel.org>,
	<alexander.shishkin@linux.intel.com>, <lorenzo.pieralisi@arm.com>,
	<will@kernel.org>, <mark.rutland@arm.com>,
	<mathieu.poirier@linaro.org>, <suzuki.poulose@arm.com>,
	<mike.leach@linaro.org>, <leo.yan@linaro.org>,
	<jonathan.cameron@huawei.com>, <daniel.thompson@linaro.org>,
	<joro@8bytes.org>, <shameerali.kolothum.thodi@huawei.com>,
	<robin.murphy@arm.com>, <peterz@infradead.org>,
	<mingo@redhat.com>, <acme@kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<coresight@lists.linaro.org>, <linux-pci@vger.kernel.org>,
	<linux-perf-users@vger.kernel.org>,
	<iommu@lists.linux-foundation.org>
Cc: <prime.zeng@huawei.com>, <liuqi115@huawei.com>,
	<zhangshaokun@hisilicon.com>, <linuxarm@huawei.com>
Subject: Re: [PATCH v7 5/7] perf tool: Add support for HiSilicon PCIe Tune and Trace device driver
Date: Thu, 14 Apr 2022 14:00:44 +0100	[thread overview]
Message-ID: <40f03ea6-1690-8a6f-2969-24c47f39c215@huawei.com> (raw)
In-Reply-To: <e2b7484b-eb15-029c-b1e1-4831368f61c9@huawei.com>

On 12/04/2022 08:41, Yicong Yang wrote:
>>> +    hisi_ptt_pmus = zalloc(sizeof(struct perf_pmu *) * (*nr_ptts));
>>> +    if (!hisi_ptt_pmus) {
>>> +        pr_err("hisi_ptt alloc failed\n");
>>> +        *err = -ENOMEM;
>> using PTR_ERR seems better, if possible
>>
> ok will change to that. *err = -ENOMEM is used here to keep consistence with
> what spe does.
> 

Ah, I see that we are contrained by the interface of 
auxtrace_record_init() to pass err as a pointer, so I suppose the code 
in this patch is ok to fit into that.

  reply	other threads:[~2022-04-14 12:59 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-07 12:58 [PATCH v7 0/7] Add support for HiSilicon PCIe Tune and Trace device Yicong Yang
2022-04-07 12:58 ` [PATCH v7 1/7] iommu/arm-smmu-v3: Make default domain type of HiSilicon PTT device to identity Yicong Yang
2022-05-10 11:23   ` Will Deacon
2022-05-10 12:43     ` Yicong Yang
2022-05-11 11:42   ` John Garry
2022-04-07 12:58 ` [PATCH v7 2/7] hwtracing: Add trace function support for HiSilicon PCIe Tune and Trace device Yicong Yang
2022-04-11 17:02   ` John Garry
2022-04-12  7:36     ` Yicong Yang
2022-04-12  8:39       ` John Garry
2022-04-12 12:52         ` Yicong Yang
2022-04-29 16:00   ` Leo Yan
2022-05-05 12:13     ` Yicong Yang
2022-05-10  9:46   ` James Clark
2022-05-10 11:18     ` Yicong Yang
2022-05-10 12:54       ` James Clark
2022-05-10 13:17         ` Yicong Yang
2022-04-07 12:58 ` [PATCH v7 3/7] hisi_ptt: Add support for dynamically updating the filter list Yicong Yang
2022-04-07 12:58 ` [PATCH v7 4/7] hisi_ptt: Add tune function support for HiSilicon PCIe Tune and Trace device Yicong Yang
2022-04-07 12:58 ` [PATCH v7 5/7] perf tool: Add support for HiSilicon PCIe Tune and Trace device driver Yicong Yang
2022-04-11 17:19   ` John Garry
2022-04-12  7:41     ` Yicong Yang
2022-04-14 13:00       ` John Garry [this message]
2022-04-30  7:35   ` Leo Yan
2022-05-05 11:30     ` liuqi (BA)
2022-05-10 10:14   ` James Clark
2022-05-11  2:02     ` liuqi (BA)
2022-05-11  9:18       ` James Clark
2022-04-07 12:58 ` [PATCH v7 6/7] docs: Add HiSilicon PTT device driver documentation Yicong Yang
2022-04-07 12:58 ` [PATCH v7 7/7] MAINTAINERS: Add maintainer for HiSilicon PTT driver Yicong Yang
2022-04-14 13:20 ` [PATCH v7 0/7] Add support for HiSilicon PCIe Tune and Trace device Yicong Yang

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