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Re: [Qemu-devel] [PATCH 04/11] migration: split use of MigrationState.to
From: |
Juan Quintela |
Subject: |
Re: [Qemu-devel] [PATCH 04/11] migration: split use of MigrationState.total_time |
Date: |
Wed, 03 Jan 2018 10:20:39 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) |
Peter Xu <address@hidden> wrote:
> On Wed, Jan 03, 2018 at 09:58:10AM +0100, Juan Quintela wrote:
>> Peter Xu <address@hidden> wrote:
>> > It was used either to:
>> >
>> > 1. store initial timestamp of migration start, and
>> > 2. store total time used by last migration
>> >
>> > Let's provide two parameters for each of them. Mix use of the two is
>> > slightly misleading.
>> >
>> > Signed-off-by: Peter Xu <address@hidden>
>>
>> Reviewed-by: Juan Quintela <address@hidden>
>
> Thanks!
>
>>
>> If you have to respin, I would like to use the names:
>
> (I think it very possible :-)
>
>>
>> start_time and total_time, i.e. without the mig_ preffix, because they
>> are in an struct that is clearly named migration O:-)
>
> Oh, it's my bad (or good?) habit of keeping some prefix so that cscope
> won't mix these variables with others. I think the problem is that
> cscope is always using a global namespace for variables. Considering
> this do you still like me to change? :) Any suggestions on better
> usage of cscope would be greatly welcomed too!
I only use cscope very ocassionally, so I can't comment about its usage.
As said, I put the reviewed-by anyways. But if you dont want to use
generic names like start_time/total_time, then please use the full name:
- migration_start_time
- migration_total_time
It is only used a couple of times, and clearer to read. I normally only
put _prefixes_ if context don't make clear what the variable means. If
I need *context* I tend to use the full name of things, not
abbreviations. But yes, not all the code is coherent/consistent.
Later, Juan.
>
> (Sure I can rename that! It's not a big deal)
- [Qemu-devel] [PATCH 03/11] migration: remove "enable_colo" var, (continued)
[Qemu-devel] [PATCH 04/11] migration: split use of MigrationState.total_time, Peter Xu, 2018/01/03
[Qemu-devel] [PATCH 06/11] migration: introduce vm_down_start_time, Peter Xu, 2018/01/03
[Qemu-devel] [PATCH 08/11] migration: use switch at the end of migration, Peter Xu, 2018/01/03
[Qemu-devel] [PATCH 07/11] migration: introduce migrate_calculate_complete, Peter Xu, 2018/01/03
[Qemu-devel] [PATCH 09/11] migration: cleanup stats update into function, Peter Xu, 2018/01/03