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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: fddd061a-5679-49b1-25e7-08d7be66fe3d X-MS-Exchange-CrossTenant-originalarrivaltime: 02 Mar 2020 05:03:05.5727 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: zC+lwz6xkA5upNNqcz3e80qyUqI33Q4laGau3OjcfZhwUYFtZ2kK33t4IcikDFqvoFh599Xim7fcsHFeJIUT1w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR04MB4598 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200301_210314_032569_75317035 X-CRM114-Status: GOOD ( 13.51 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anup Patel , Paul Walmsley Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org On 2020/03/02 13:57, Sean Anderson wrote:=0A= > On 3/1/20 11:54 PM, Damien Le Moal wrote:=0A= >> On 2020/03/02 13:18, Sean Anderson wrote:=0A= >>> On 3/1/20 11:11 PM, Damien Le Moal wrote:=0A= >>>> On 2020/03/02 12:53, Sean Anderson wrote:=0A= >>>>> On 3/1/20 10:01 PM, Damien Le Moal wrote:=0A= >>>>>> On 2020/02/29 5:32, Sean Anderson wrote:=0A= >>>>>>> Hi,=0A= >>>>>>>=0A= >>>>>>> When booting from U-Boot I get an OOM. Perhaps this is related to t= he=0A= >>>>>>> second cpu not coming up?=0A= >>>>>>=0A= >>>>>> Unlikely. It looks like your user space needs 2MB per shell (order 9= =0A= >>>>>> allocation). Since you have only 5.5MB free, that may explain the al= location=0A= >>>>>> failure (if init is forking another shell especially).=0A= >>>>>=0A= >>>>> This should be before init comes up; when comparing this to your sysl= og=0A= >>>>> output there are several more messages before init gets started.=0A= >>>>=0A= >>>> Ah, yes. Your log shows:=0A= >>>> [ 1.899086] Mem-Info:=0A= >>>> [ 1.901072] active_anon:0 inactive_anon:0 isolated_anon:0=0A= >>>> [ 1.901072] active_file:0 inactive_file:0 isolated_file:0=0A= >>>> [ 1.901072] unevictable:705 dirty:0 writeback:0 unstable:0=0A= >>>> [ 1.901072] slab_reclaimable:0 slab_unreclaimable:215=0A= >>>> [ 1.901072] mapped:0 shmem:0 pagetables:0 bounce:0=0A= >>>> [ 1.901072] free:417 free_pcp:0 free_cma:0=0A= >>>>=0A= >>>> so only 417 free pages, but awapper is asking for 512 pages allocation= ... Weird.=0A= >>>> Did you use the k210 default config ? Something using too much memory = for the=0A= >>>> board has been added to the config I think.=0A= >>>=0A= >>> I am using the default config. I thought it might be the initramfs=0A= >>> taking too much space on decompression, but I got the same problem when= =0A= >>> using an uncompressed initramfs.=0A= >>=0A= >> Yes, that must be it. How big is your initramfs ? I generally do not see= any=0A= >> problem with 500-600KB initramfs. For bigger ones, I do see the OOM prob= lem=0A= >> often too. But most of the time, the OOM triggers more if the busybox ex= ecutable=0A= >> is too big and there are too many shell levels.=0A= > =0A= > My initramfs is 1.6M atm, so perhaps I should try with a smaller one.=0A= =0A= Most likely. I never had success initially with such big initramfs. Buildro= ot=0A= initramfs builds tend to be really much bigger than necessary. So I tend to= =0A= manually make my own. With a 1.6MB initramfs, you will need the order 9=0A= allocation seen (2MB) before the 1.6MB embedded initramfs is freed. With so= me=0A= memory fragmentation, that may fail easily. I do wonder though why the memo= ry=0A= would be so fragmented so early in the boot process. It may be interesting = to=0A= explore that to see if some optimizations cannot be added.=0A= =0A= =0A= -- =0A= Damien Le Moal=0A= Western Digital Research=0A=