From: Helge Deller <deller@gmx.de>
To: Tom Herbert <therbert@google.com>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org
Cc: linux-parisc List <linux-parisc@vger.kernel.org>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
John David Anglin <dave.anglin@bell.net>
Subject: CONFIG_XPS depends on L1_CACHE_BYTES being greater than sizeof(struct xps_map)
Date: Thu, 22 Oct 2015 22:00:11 +0200 [thread overview]
Message-ID: <5629404B.8090805@gmx.de> (raw)
In-Reply-To: <5628F868.3040105@bell.net>
Hi Tom & David,
I've queued-up a patch for the parisc architecture which reduces L1_CACHE_BYTES from 32 to 16:
https://patchwork.kernel.org/patch/7399291/
But this change will break the kernel build like this:
In file included from net/core/dev.c:92:0:
net/core/dev.c: In function ‘expand_xps_map’:
include/linux/netdevice.h:721:27: warning: overflow in implicit constant conversion [-Woverflow]
#define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \
net/core/dev.c:1972:18: note: in expansion of macro ‘XPS_MIN_MAP_ALLOC’
int alloc_len = XPS_MIN_MAP_ALLOC;
Do you see an easy way to fix this ?
Thanks,
Helge
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next parent reply other threads:[~2015-10-22 20:00 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <42430464-867C-4E0B-8E95-C6CDB6D8A0B2@bell.net>
[not found] ` <32A3BF6F-B243-4AD4-9AE9-A5F9DAE0270A@bell.net>
[not found] ` <B8E85737-5ECD-4CBE-8730-886B098C5FA4@bell.net>
[not found] ` <trinity-eda7d55d-7234-4b29-a15c-955f8ba0c95e-1445513884942@3capp-gmx-bs32>
[not found] ` <trinity-8980ad10-b889-45cf-8f37-a33ba9cf99ef-1445514797080@3capp-gmx-bs32>
[not found] ` <1445524549.2207.1.camel@HansenPartnership.com>
[not found] ` <5628F868.3040105@bell.net>
2015-10-22 20:00 ` Helge Deller [this message]
2015-10-22 21:37 ` CONFIG_XPS depends on L1_CACHE_BYTES being greater than sizeof(struct xps_map) Tom Herbert
2015-10-23 19:21 ` Helge Deller
2015-10-23 22:16 ` Tom Herbert
2015-10-22 21:50 ` Eric Dumazet
2015-10-23 19:25 ` Helge Deller
2015-10-23 20:03 ` Eric Dumazet
2015-10-23 21:08 ` Helge Deller
2015-10-23 21:09 ` Helge Deller
2015-10-23 21:38 ` Eric Dumazet
2015-10-23 22:00 ` Alexander Duyck
2015-10-23 22:17 ` Helge Deller
2015-10-23 22:40 ` Alexander Duyck
2015-10-24 14:43 ` Helge Deller
2015-10-25 5:41 ` Alexander Duyck
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