Re: [Qemu-devel] [PATCH 0/2 V13] fsdev: add IO throttle support to fsdev devices

[Greg Kurz <groug@kaod.org>]

On Mon, 23 Jan 2017 08:03:18 -0800 (PST)
no-reply@patchew.org wrote:
> Hi,
> 
> Your series seems to have some coding style problems. See output below for
> more information:
>

Pradeep,

One should usually take patchew's findings into account. See below.

> Type: series
> Subject: [Qemu-devel] [PATCH 0/2 V13] fsdev: add IO throttle support to fsdev devices
> Message-id: 1485186641-12220-1-git-send-email-pradeep.jagadeesh@huawei.com
> 
> === TEST SCRIPT BEGIN ===
> #!/bin/bash
> 
> BASE=base
> n=1
> total=$(git log --oneline $BASE.. | wc -l)
> failed=0
> 
> # Useful git options
> git config --local diff.renamelimit 0
> git config --local diff.renames True
> 
> commits="$(git log --format=%H --reverse $BASE..)"
> for c in $commits; do
>     echo "Checking PATCH $n/$total: $(git log -n 1 --format=%s $c)..."
>     if ! git show $c --format=email | ./scripts/checkpatch.pl --mailback -; then
>         failed=1
>         echo
>     fi
>     n=$((n+1))
> done
> 
> exit $failed
> === TEST SCRIPT END ===
> 
> Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
> Switched to a new branch 'test'
> 7686dc8 throttle: factor out duplicate code
> 7568614 fsdev: add IO throttle support to fsdev devices
> 
> === OUTPUT BEGIN ===
> Checking PATCH 1/2: fsdev: add IO throttle support to fsdev devices...
> Checking PATCH 2/2: throttle: factor out duplicate code...
> ERROR: Macros with multiple statements should be enclosed in a do - while loop

I guess your patch is ok here: checkpatch.pl is simply not smart enough to
parse this.

> #228: FILE: include/qemu/throttle-options.h:13:
> +#define THROTTLE_OPTS \
> +          { \
> +            .name = "throttling.iops-total",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "limit total I/O operations per second",\
> +        },{ \
> +            .name = "throttling.iops-read",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "limit read operations per second",\
> +        },{ \
> +            .name = "throttling.iops-write",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "limit write operations per second",\
> +        },{ \
> +            .name = "throttling.bps-total",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "limit total bytes per second",\
> +        },{ \
> +            .name = "throttling.bps-read",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "limit read bytes per second",\
> +        },{ \
> +            .name = "throttling.bps-write",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "limit write bytes per second",\
> +        },{ \
> +            .name = "throttling.iops-total-max",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "I/O operations burst",\
> +        },{ \
> +            .name = "throttling.iops-read-max",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "I/O operations read burst",\
> +        },{ \
> +            .name = "throttling.iops-write-max",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "I/O operations write burst",\
> +        },{ \
> +            .name = "throttling.bps-total-max",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "total bytes burst",\
> +        },{ \
> +            .name = "throttling.bps-read-max",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "total bytes read burst",\
> +        },{ \
> +            .name = "throttling.bps-write-max",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "total bytes write burst",\
> +        },{ \
> +            .name = "throttling.iops-total-max-length",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "length of the iops-total-max burst period, in seconds",\
> +        },{ \
> +            .name = "throttling.iops-read-max-length",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "length of the iops-read-max burst period, in seconds",\
> +        },{ \
> +            .name = "throttling.iops-write-max-length",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "length of the iops-write-max burst period, in seconds",\
> +        },{ \
> +            .name = "throttling.bps-total-max-length",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "length of the bps-total-max burst period, in seconds",\
> +        },{ \
> +            .name = "throttling.bps-read-max-length",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "length of the bps-read-max burst period, in seconds",\
> +        },{ \
> +            .name = "throttling.bps-write-max-length",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "length of the bps-write-max burst period, in seconds",\
> +        },{ \
> +            .name = "throttling.iops-size",\
> +            .type = QEMU_OPT_NUMBER,\
> +            .help = "when limiting by iops max size of an I/O in bytes",\
> +        }
> 
> ERROR: Missing Signed-off-by: line(s)
> 

As Eric pointed out in another mail, all patches you send must have your
Signed-off-by line.

> total: 2 errors, 0 warnings, 278 lines checked
> 
> Your patch has style problems, please review.  If any of these errors
> are false positives report them to the maintainer, see
> CHECKPATCH in MAINTAINERS.
> 
> === OUTPUT END ===
> 
> Test command exited with code: 1
> 
> 
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