linux-kernel - RE: [PATCH V2 net-next 0/2] net: fec: fix TX bandwidth fluctuations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 17 Jun 2021 11:40:58 +0000
From:   Joakim Zhang <qiangqing.zhang@....com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     David Miller <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "frieder.schrempf@...tron.de" <frieder.schrempf@...tron.de>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V2 net-next 0/2] net: fec: fix TX bandwidth fluctuations


Hi Andrew,

> -----Original Message-----
> From: Andrew Lunn <andrew@...n.ch>
> Sent: 2021年6月16日 21:06
> To: Joakim Zhang <qiangqing.zhang@....com>
> Cc: David Miller <davem@...emloft.net>; kuba@...nel.org;
> frieder.schrempf@...tron.de; netdev@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [PATCH V2 net-next 0/2] net: fec: fix TX bandwidth fluctuations
> 
> > I try below build options, also can't reproduce this issue, so really don't know
> how to fix it.
> >
> > make ARCH=arm64 distclean
> > make ARCH=arm64 allmodconfig
> > make -j8 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- W=1 / make -j8
> ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- W=2 / make -j8
> ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- W=3
> >
> > I saw many unrelated warnings...
> 
> Then it could be sparse. Install sparse and use C=1.

After applying the patch #2, I tried to use C=1 yesterday, I double check it today, still no warnings. Anything I missing?

$ make -j8 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- W=1,C=1
  CALL    scripts/atomic/check-atomics.sh
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/freescale/fec_main.o
  LD [M]  drivers/net/ethernet/freescale/fec.o
  MODPOST modules-only.symvers
  GEN     Module.symvers
  CC [M]  drivers/net/ethernet/freescale/fec.mod.o
  LD [M]  drivers/net/ethernet/freescale/fec.ko

Best Regards,
Joakim Zhang
>      Andrew