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From: Bruce Richardson <bruce.richardson@intel.com>
To: Gaetan Rivet <gaetan.rivet@6wind.com>
Cc: dev@dpdk.org, Jan Blunck <jblunck@infradead.org>
Subject: Re: [dpdk-dev] [PATCH v5 01/12] bus: add bus iterator to find a bus
Date: Mon, 26 Jun 2017 16:30:55 +0100	[thread overview]
Message-ID: <20170626153055.GA101992@bricha3-MOBL3.ger.corp.intel.com> (raw)
In-Reply-To: <ad9258bced8eba6443e0eeb08bde921d3d29cafe.1498436062.git.gaetan.rivet@6wind.com>

On Mon, Jun 26, 2017 at 02:21:59AM +0200, Gaetan Rivet wrote:
> From: Jan Blunck <jblunck@infradead.org>
> 
> This helper allows to iterate over all registered buses and find one
> matching data used as parameter.
> 
> Signed-off-by: Jan Blunck <jblunck@infradead.org>
> Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
> ---
>  lib/librte_eal/bsdapp/eal/rte_eal_version.map   |  1 +
>  lib/librte_eal/common/eal_common_bus.c          | 20 ++++++++++++
>  lib/librte_eal/common/include/rte_bus.h         | 43 +++++++++++++++++++++++++
>  lib/librte_eal/linuxapp/eal/rte_eal_version.map |  1 +
>  4 files changed, 65 insertions(+)
> 

Two minor suggestions below. Otherwise:

Acked-by: Bruce Richardson <bruce.richardson@intel.com>

> diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
> index 2e48a73..ed09ab2 100644
> --- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
> +++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
> @@ -162,6 +162,7 @@ DPDK_17.02 {
>  DPDK_17.05 {
>  	global:
>  
> +	rte_bus_find;
>  	rte_cpu_is_supported;
>  	rte_log_dump;
>  	rte_log_register;
> diff --git a/lib/librte_eal/common/eal_common_bus.c b/lib/librte_eal/common/eal_common_bus.c
> index 8f9baf8..4619eb2 100644
> --- a/lib/librte_eal/common/eal_common_bus.c
> +++ b/lib/librte_eal/common/eal_common_bus.c
> @@ -145,3 +145,23 @@ rte_bus_dump(FILE *f)
>  		}
>  	}
>  }
> +
> +struct rte_bus *
> +rte_bus_find(rte_bus_cmp_t cmp,
> +	     const void *data,
> +	     const struct rte_bus *start)
> +{
> +	struct rte_bus *bus = NULL;
> +	int started = start == NULL;

Please put brackets around the "start == NULL" to improve readability.
My first reading of this I assumed it was doing multiple assignment of
both start and started to NULL. To make it extra clear, prefix the
comparison with "!!".

> +
> +	TAILQ_FOREACH(bus, &rte_bus_list, next) {
> +		if (!started) {
> +			if (bus == start)
> +				started = 1;
> +			continue;
> +		}
> +		if (cmp(bus, data) == 0)
> +			break;
> +	}
> +	return bus;
> +}

I also think the name "started" is confusing, and might be better as the
slighly longer "start_found".

  reply	other threads:[~2017-06-26 15:31 UTC|newest]

Thread overview: 117+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-26  0:21 [dpdk-dev] [PATCH v5 00/12] bus: attach / detach API Gaetan Rivet
2017-06-26  0:21 ` [dpdk-dev] [PATCH v5 01/12] bus: add bus iterator to find a bus Gaetan Rivet
2017-06-26 15:30   ` Bruce Richardson [this message]
2017-06-26 20:53     ` Gaëtan Rivet
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 02/12] bus: add device iterator method Gaetan Rivet
2017-06-26 16:20   ` Bruce Richardson
2017-06-26 21:13     ` Gaëtan Rivet
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 03/12] bus: add helper to find which bus holds a device Gaetan Rivet
2017-06-26 16:31   ` Bruce Richardson
2017-06-26 22:16     ` Gaëtan Rivet
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 04/12] bus: add bus iterator to find " Gaetan Rivet
2017-06-27 10:14   ` Bruce Richardson
2017-06-27 13:54   ` Bruce Richardson
2017-06-27 15:05     ` Gaëtan Rivet
2017-06-27 15:08       ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 05/12] bus: introduce hotplug functionality Gaetan Rivet
2017-06-27 12:23   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 06/12] vdev: implement find_device bus operation Gaetan Rivet
2017-06-27 12:25   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 07/12] vdev: implement hotplug functionality Gaetan Rivet
2017-06-27 12:41   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 08/12] vdev: expose bus name Gaetan Rivet
2017-06-27 12:45   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 09/12] vdev: use standard bus registration function Gaetan Rivet
2017-06-27 12:59   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 10/12] pci: implement find_device bus operation Gaetan Rivet
2017-06-27 13:36   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 11/12] pci: implement hotplug " Gaetan Rivet
2017-06-27 13:49   ` Bruce Richardson
2017-06-26  0:22 ` [dpdk-dev] [PATCH v5 12/12] eal: make virtual driver probe and remove take rte_vdev_device Gaetan Rivet
2017-06-27 13:58   ` Bruce Richardson
2017-06-27 14:47     ` Gaëtan Rivet
2017-06-27 15:06       ` Bruce Richardson
2017-06-27 14:00   ` Bruce Richardson
2017-06-27 14:08 ` [dpdk-dev] [PATCH v5 00/12] bus: attach / detach API Bruce Richardson
2017-06-27 14:48   ` Gaëtan Rivet
2017-06-27 16:11 ` [dpdk-dev] [PATCH v6 00/11] " Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 01/11] bus: add bus iterator to find a bus Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 02/11] bus: add device iterator method Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 03/11] bus: add helper to find which bus holds a device Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 04/11] bus: add bus iterator to find " Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 05/11] bus: introduce hotplug functionality Gaetan Rivet
2017-06-27 19:03     ` Jan Blunck
2017-06-28 11:44       ` Thomas Monjalon
2017-06-28 11:58         ` Jan Blunck
2017-06-28 12:11           ` Thomas Monjalon
2017-06-28 13:09             ` Jan Blunck
2017-06-28 13:30               ` Thomas Monjalon
2017-06-28 15:11                 ` Jan Blunck
2017-06-28 15:33                   ` Bruce Richardson
2017-06-29 12:59                     ` Gaëtan Rivet
2017-06-29 19:20                       ` Jan Blunck
2017-06-30 11:32                         ` Gaëtan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 06/11] vdev: implement find_device bus operation Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 07/11] vdev: implement hotplug " Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 08/11] vdev: use standard bus registration function Gaetan Rivet
2017-07-03 22:15     ` Thomas Monjalon
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 09/11] pci: implement find_device bus operation Gaetan Rivet
2017-06-27 23:35     ` Stephen Hemminger
2017-06-28  9:17       ` Gaëtan Rivet
2017-06-28  9:52         ` Richardson, Bruce
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 10/11] pci: implement hotplug " Gaetan Rivet
2017-06-27 16:11   ` [dpdk-dev] [PATCH v6 11/11] dev: use new hotplug API in attach / detach Gaetan Rivet
2017-06-29 18:21   ` [dpdk-dev] [PATCH 00/15] bus attach/detach API and hotplug rework Jan Blunck
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 01/15] bus: add bus iterator to find a bus Jan Blunck
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 02/15] bus: add find_device bus operation Jan Blunck
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 03/15] vdev: implement " Jan Blunck
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 04/15] pci: " Jan Blunck
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 05/15] bus/fslmc: " Jan Blunck
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 06/15] bus: add helper to find which bus holds a device Jan Blunck
2017-06-30  9:16       ` Thomas Monjalon
2017-06-30 16:46         ` Jan Blunck
2017-06-30 18:29           ` Thomas Monjalon
2017-06-30 21:24             ` Bruce Richardson
2017-06-30 21:25           ` Bruce Richardson
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 07/15] bus: add bus iterator to find " Jan Blunck
2017-06-30  9:17       ` Thomas Monjalon
2017-06-29 18:21     ` [dpdk-dev] [PATCH v7 08/15] bus: require buses to implement find_device operation Jan Blunck
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 09/15] bus: add rte_bus_find_by_name Jan Blunck
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 10/15] bus: introduce device plug/unplug functionality Jan Blunck
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 11/15] vdev: implement unplug bus operation Jan Blunck
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 12/15] pci: implement hotplug " Jan Blunck
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 13/15] eal: add hotplug add/remove functions Jan Blunck
2017-06-30  9:06       ` Thomas Monjalon
2017-06-30  9:11         ` Gaëtan Rivet
2017-06-30  9:20           ` Bruce Richardson
2017-06-30 15:44             ` Jan Blunck
2017-06-30 16:03               ` Thomas Monjalon
2017-06-30 16:13                 ` Gaëtan Rivet
2017-06-30 16:25                   ` Bruce Richardson
2017-06-30 16:29                     ` Thomas Monjalon
2017-06-30 12:54       ` Thomas Monjalon
2017-06-30 15:12         ` Jan Blunck
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 14/15] dev: use new hotplug API in attach / detach Jan Blunck
2017-06-29 21:05       ` Thomas Monjalon
2017-06-29 18:22     ` [dpdk-dev] [PATCH v7 15/15] ethdev: Use embedded rte_device to detach driver Jan Blunck
2017-06-29 20:58       ` Thomas Monjalon
2017-06-30  9:59     ` [dpdk-dev] [PATCH 00/15] bus attach/detach API and hotplug rework Thomas Monjalon
2017-06-30 18:19     ` [dpdk-dev] [PATCH v8 00/14] " Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 01/14] bus: add bus iterator to find a bus Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 02/14] bus: add find_device bus operation Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 03/14] vdev: implement " Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 04/14] pci: " Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 05/14] bus/fslmc: " Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 06/14] bus: add helper to find which bus holds a device Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 07/14] bus: require buses to implement find_device operation Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 08/14] bus: add rte_bus_find_by_name Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 09/14] bus: introduce device plug/unplug functionality Jan Blunck
2017-06-30 18:38         ` Gaëtan Rivet
2017-06-30 18:52           ` Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 10/14] vdev: implement unplug bus operation Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 11/14] pci: implement hotplug " Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 12/14] eal: add hotplug add/remove functions Jan Blunck
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 13/14] ethdev: Use embedded rte_device to detach driver Jan Blunck
2017-07-03 23:17         ` Thomas Monjalon
2017-06-30 18:19       ` [dpdk-dev] [PATCH v8 14/14] dev: use new hotplug API in attach Jan Blunck
2017-07-03 22:59       ` [dpdk-dev] [PATCH v8 00/14] bus attach/detach API and hotplug rework Thomas Monjalon

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