From: kbuild test robot <lkp@intel.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: kbuild-all@01.org, Tom Lendacky <thomas.lendacky@amd.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] amd-xgbe: use PAGE_ALLOC_COSTLY_ORDER in xgbe_map_rx_buffer
Date: Sat, 3 Jun 2017 09:25:48 +0800 [thread overview]
Message-ID: <201706030927.ol0IbBWK%fengguang.wu@intel.com> (raw)
In-Reply-To: <20170602144352.GI29840@dhcp22.suse.cz>
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Hi Michal,
[auto build test WARNING on net-next/master]
[also build test WARNING on v4.12-rc3 next-20170602]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Michal-Hocko/amd-xgbe-use-PAGE_ALLOC_COSTLY_ORDER-in-xgbe_map_rx_buffer/20170603-021038
config: x86_64-randconfig-v0-06030836 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
drivers/net//ethernet/amd/xgbe/xgbe-desc.c: In function 'xgbe_map_rx_buffer':
>> drivers/net//ethernet/amd/xgbe/xgbe-desc.c:327: warning: unused variable 'order'
vim +/order +327 drivers/net//ethernet/amd/xgbe/xgbe-desc.c
174fd259 Lendacky, Thomas 2014-11-04 311 if ((pa->pages_offset + len) > pa->pages_len) {
08dcc47c Lendacky, Thomas 2014-11-04 312 /* This data descriptor is responsible for unmapping page(s) */
174fd259 Lendacky, Thomas 2014-11-04 313 bd->pa_unmap = *pa;
08dcc47c Lendacky, Thomas 2014-11-04 314
08dcc47c Lendacky, Thomas 2014-11-04 315 /* Get a new allocation next time */
174fd259 Lendacky, Thomas 2014-11-04 316 pa->pages = NULL;
174fd259 Lendacky, Thomas 2014-11-04 317 pa->pages_len = 0;
174fd259 Lendacky, Thomas 2014-11-04 318 pa->pages_offset = 0;
174fd259 Lendacky, Thomas 2014-11-04 319 pa->pages_dma = 0;
174fd259 Lendacky, Thomas 2014-11-04 320 }
174fd259 Lendacky, Thomas 2014-11-04 321 }
174fd259 Lendacky, Thomas 2014-11-04 322
174fd259 Lendacky, Thomas 2014-11-04 323 static int xgbe_map_rx_buffer(struct xgbe_prv_data *pdata,
174fd259 Lendacky, Thomas 2014-11-04 324 struct xgbe_ring *ring,
174fd259 Lendacky, Thomas 2014-11-04 325 struct xgbe_ring_data *rdata)
174fd259 Lendacky, Thomas 2014-11-04 326 {
174fd259 Lendacky, Thomas 2014-11-04 @327 int order, ret;
174fd259 Lendacky, Thomas 2014-11-04 328
174fd259 Lendacky, Thomas 2014-11-04 329 if (!ring->rx_hdr_pa.pages) {
174fd259 Lendacky, Thomas 2014-11-04 330 ret = xgbe_alloc_pages(pdata, &ring->rx_hdr_pa, GFP_ATOMIC, 0);
174fd259 Lendacky, Thomas 2014-11-04 331 if (ret)
174fd259 Lendacky, Thomas 2014-11-04 332 return ret;
08dcc47c Lendacky, Thomas 2014-11-04 333 }
08dcc47c Lendacky, Thomas 2014-11-04 334
174fd259 Lendacky, Thomas 2014-11-04 335 if (!ring->rx_buf_pa.pages) {
:::::: The code at line 327 was first introduced by commit
:::::: 174fd2597b0bd8c19fce6a97e8b0f753ef4ce7cb amd-xgbe: Implement split header receive support
:::::: TO: Lendacky, Thomas <Thomas.Lendacky@amd.com>
:::::: CC: David S. Miller <davem@davemloft.net>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2017-06-03 1:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-31 16:04 strange PAGE_ALLOC_COSTLY_ORDER usage " Michal Hocko
2017-06-02 14:20 ` Tom Lendacky
2017-06-02 14:43 ` Michal Hocko
2017-06-02 15:41 ` Tom Lendacky
2017-06-03 1:25 ` kbuild test robot [this message]
2017-06-02 15:54 [PATCH] amd-xgbe: use PAGE_ALLOC_COSTLY_ORDER " Michal Hocko
2017-06-02 20:52 ` Tom Lendacky
2017-06-05 0:01 ` David Miller
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