From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Declan Doherty <declan.doherty@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] eal / malloc : alignment parameter check failing due to changes in rte_is_power_of_2
Date: Fri, 16 Jan 2015 18:01:32 +0100 [thread overview]
Message-ID: <1555477.4KJeR5JQaW@xps13> (raw)
In-Reply-To: <1421421030-22261-1-git-send-email-declan.doherty@intel.com>
2015-01-16 15:10, Declan Doherty:
> In commit 2fc8d6d the behaviour of function rte_is_power_of_2 was
> changed to not return true for 0. memzone_reserve_aligned_thread_unsafe
> and rte_malloc_socket both make the assumption that for align = 0
> !rte_is_power_of_2(align) will return false. This patch adds a check
> that align parameter is non-zero before doing the power of 2 check
>
> Signed-off-by: Declan Doherty <declan.doherty@intel.com>
[...]
> - if (!rte_is_power_of_2(align)) {
> + if (align ? !rte_is_power_of_2(align) : 0) {
[...]
> - if (size == 0 || !rte_is_power_of_2(align))
> + if (size == 0 || align ? !rte_is_power_of_2(align) : 0)
I don't understand why you write "align ? !rte_is_power_of_2(align) : 0"
instead of the more readable "align && !rte_is_power_of_2(align)" ?
Pablo acked it so I guess there is something obvious I'm missing.
--
Thomas
next prev parent reply other threads:[~2015-01-16 17:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-16 15:10 Declan Doherty
2015-01-16 15:37 ` De Lara Guarch, Pablo
2015-01-16 17:01 ` Thomas Monjalon [this message]
2015-01-18 19:26 ` Doherty, Declan
2015-01-19 9:00 ` Thomas Monjalon
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