linux-kernel - Re: [PATCH] intel_th: Remove usage of the deprecated ida_simple

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Date: Tue, 20 Feb 2024 19:57:29 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] intel_th: Remove usage of the deprecated ida_simple_xx()
 API

Le 11/01/2024 à 21:34, Christophe JAILLET a écrit :
> ida_alloc() and ida_free() should be preferred to the deprecated
> ida_simple_get() and ida_simple_remove().
> 
> This is less verbose.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>   drivers/hwtracing/intel_th/core.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
> index cc7f879bb175..86c8efecd7c2 100644
> --- a/drivers/hwtracing/intel_th/core.c
> +++ b/drivers/hwtracing/intel_th/core.c
> @@ -871,7 +871,7 @@ intel_th_alloc(struct device *dev, const struct intel_th_drvdata *drvdata,
>   	if (!th)
>   		return ERR_PTR(-ENOMEM);
>   
> -	th->id = ida_simple_get(&intel_th_ida, 0, 0, GFP_KERNEL);
> +	th->id = ida_alloc(&intel_th_ida, GFP_KERNEL);
>   	if (th->id < 0) {
>   		err = th->id;
>   		goto err_alloc;
> @@ -931,7 +931,7 @@ intel_th_alloc(struct device *dev, const struct intel_th_drvdata *drvdata,
>   			    "intel_th/output");
>   
>   err_ida:
> -	ida_simple_remove(&intel_th_ida, th->id);
> +	ida_free(&intel_th_ida, th->id);
>   
>   err_alloc:
>   	kfree(th);
> @@ -964,7 +964,7 @@ void intel_th_free(struct intel_th *th)
>   	__unregister_chrdev(th->major, 0, TH_POSSIBLE_OUTPUTS,
>   			    "intel_th/output");
>   
> -	ida_simple_remove(&intel_th_ida, th->id);
> +	ida_free(&intel_th_ida, th->id);
>   
>   	kfree(th);
>   }

Hi,

gentle reminder.

All patches to remove the ida_simple API have been sent.
And Matthew Wilcox seems happy with the on going work. (see [1])

Based on next-20240220
$git grep ida_simple_get | wc -l
36

https://elixir.bootlin.com/linux/v6.8-rc3/A/ident/ida_simple_get
50

https://elixir.bootlin.com/linux/v6.7.4/A/ident/ida_simple_get
81

Thanks
CJ

[1]: https://lore.kernel.org/all/ZaqruGVz734zjxrZ@casper.infradead.org/