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From: Stephen Hemminger <stephen@networkplumber.org>
To: Chenbo Xia <chenbo.xia@intel.com>
Cc: dev@dpdk.org, thomas@monjalon.net, cunming.liang@intel.com,
	jingjing.wu@intel.com, anatoly.burakov@intel.com,
	ferruh.yigit@intel.com, mdr@ashroe.eu, nhorman@tuxdriver.com,
	bruce.richardson@intel.com, david.marchand@redhat.com,
	konstantin.ananyev@intel.com, Tiwei Bie <tiwei.bie@intel.com>
Subject: Re: [dpdk-dev] [RFC v3 4/6] eal: add a helper for reading string from sysfs
Date: Mon, 31 May 2021 22:39:22 -0700	[thread overview]
Message-ID: <20210531223922.4fb5397c@hermes.local> (raw)
In-Reply-To: <20210601030644.3318-5-chenbo.xia@intel.com>

On Tue,  1 Jun 2021 11:06:42 +0800
Chenbo Xia <chenbo.xia@intel.com> wrote:

>  
> +int
> +rte_eal_parse_sysfs_str(const char *filename, char *buf, unsigned long sz)
> +{
> +	FILE *f;
> +
> +	f = fopen(filename, "r");
> +	if (f == NULL) {
> +		RTE_LOG(ERR, EAL, "%s(): cannot open sysfs file %s\n",
> +			__func__, filename);

Helpful to decode errno.
		RTE_LOG(ERR, EAL, "%s(): cannot open sysfs file %s:%s\n",
			__func__, filename, strerror(errno));


  parent reply	other threads:[~2021-06-01  5:39 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-03  7:18 [dpdk-dev] [RFC 0/3] Add mdev (Mediated device) support in DPDK Tiwei Bie
2019-04-03  7:18 ` Tiwei Bie
2019-04-03  7:18 ` [dpdk-dev] [RFC 1/3] eal: add a helper for reading string from sysfs Tiwei Bie
2019-04-03  7:18   ` Tiwei Bie
2019-04-03  7:18 ` [dpdk-dev] [RFC 2/3] bus/mdev: add mdev bus support Tiwei Bie
2019-04-03  7:18   ` Tiwei Bie
2019-04-03  7:18 ` [dpdk-dev] [RFC 3/3] bus/pci: add mdev support Tiwei Bie
2019-04-03  7:18   ` Tiwei Bie
2019-04-03 14:13   ` Wiles, Keith
2019-04-03 14:13     ` Wiles, Keith
2019-04-04  4:19     ` Tiwei Bie
2019-04-04  4:19       ` Tiwei Bie
2019-04-08  8:44 ` [dpdk-dev] [RFC 0/3] Add mdev (Mediated device) support in DPDK Alejandro Lucero
2019-04-08  8:44   ` Alejandro Lucero
2019-04-08  9:36   ` Tiwei Bie
2019-04-08  9:36     ` Tiwei Bie
2019-04-10 10:02     ` Francois Ozog
2019-04-10 10:02       ` Francois Ozog
2023-07-03 23:54       ` Stephen Hemminger
2019-07-15  7:52 ` [dpdk-dev] [RFC v2 0/5] " Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 1/5] bus/pci: introduce an internal representation of PCI device Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 2/5] bus/pci: avoid depending on private value in kernel source Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 3/5] bus/pci: introduce helper for MMIO read and write Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 4/5] eal: add a helper for reading string from sysfs Tiwei Bie
2019-07-15  7:52   ` [dpdk-dev] [RFC v2 5/5] bus/pci: add mdev support Tiwei Bie
2021-06-01  3:06     ` [dpdk-dev] [RFC v3 0/6] Add mdev (Mediated device) support in DPDK Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 1/6] bus/pci: introduce an internal representation of PCI device Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 2/6] bus/pci: avoid depending on private value in kernel source Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 3/6] bus/pci: introduce helper for MMIO read and write Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 4/6] eal: add a helper for reading string from sysfs Chenbo Xia
2021-06-01  5:37         ` Stephen Hemminger
2021-06-08  5:47           ` Xia, Chenbo
2021-06-01  5:39         ` Stephen Hemminger [this message]
2021-06-08  5:48           ` Xia, Chenbo
2021-06-11  7:19         ` Thomas Monjalon
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 5/6] bus/pci: add mdev support Chenbo Xia
2021-06-01  3:06       ` [dpdk-dev] [RFC v3 6/6] bus/pci: add sparse mmap support for mediated PCI devices Chenbo Xia
2021-06-11  7:15       ` [dpdk-dev] [RFC v3 0/6] Add mdev (Mediated device) support in DPDK Thomas Monjalon
2021-06-15  2:49         ` Xia, Chenbo
2021-06-15  7:48           ` Thomas Monjalon
2021-06-15 10:44             ` Xia, Chenbo
2021-06-15 11:57             ` Jason Gunthorpe

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