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Re: [PATCH v11 8/8] xen: introduce ERRP_AUTO_PROPAGATE
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [PATCH v11 8/8] xen: introduce ERRP_AUTO_PROPAGATE |
Date: |
Sat, 4 Jul 2020 18:36:07 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 |
On 7/3/20 11:08 AM, Vladimir Sementsov-Ogievskiy wrote:
> If we want to add some info to errp (by error_prepend() or
> error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
> Otherwise, this info will not be added when errp == &error_fatal
> (the program will exit prior to the error_append_hint() or
> error_prepend() call). Fix such cases.
>
> If we want to check error after errp-function call, we need to
> introduce local_err and then propagate it to errp. Instead, use
> ERRP_AUTO_PROPAGATE macro, benefits are:
> 1. No need of explicit error_propagate call
> 2. No need of explicit local_err variable: use errp directly
> 3. ERRP_AUTO_PROPAGATE leaves errp as is if it's not NULL or
> &error_fatal, this means that we don't break error_abort
> (we'll abort on error_set, not on error_propagate)
>
> This commit is generated by command
>
> sed -n '/^X86 Xen CPUs$/,/^$/{s/^F: //p}' MAINTAINERS | \
> xargs git ls-files | grep '\.[hc]$' | \
> xargs spatch \
> --sp-file scripts/coccinelle/auto-propagated-errp.cocci \
> --macro-file scripts/cocci-macro-file.h \
> --in-place --no-show-diff --max-width 80
>
> Reported-by: Kevin Wolf <kwolf@redhat.com>
> Reported-by: Greg Kurz <groug@kaod.org>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---
> hw/block/dataplane/xen-block.c | 17 +++---
> hw/block/xen-block.c | 102 ++++++++++++++-------------------
> hw/pci-host/xen_igd_pt.c | 7 +--
> hw/xen/xen-backend.c | 7 +--
> hw/xen/xen-bus.c | 92 +++++++++++++----------------
> hw/xen/xen-host-pci-device.c | 27 +++++----
> hw/xen/xen_pt.c | 25 ++++----
> hw/xen/xen_pt_config_init.c | 17 +++---
> 8 files changed, 128 insertions(+), 166 deletions(-)
Without the description, this patch has 800 lines of diff...
It killed me, I don't have the energy to review patch #7 of this
series after that, sorry.
Consider splitting such mechanical patches next time. Here it
could have been hw/block, hw/pci-host, hw/xen.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
- [PATCH v11 0/8] error: auto propagated local_err part I, Vladimir Sementsov-Ogievskiy, 2020/07/03
- [PATCH v11 1/8] error: auto propagated local_err, Vladimir Sementsov-Ogievskiy, 2020/07/03
- [PATCH v11 2/8] scripts: Coccinelle script to use ERRP_AUTO_PROPAGATE(), Vladimir Sementsov-Ogievskiy, 2020/07/03
- [PATCH v11 4/8] pflash: introduce ERRP_AUTO_PROPAGATE, Vladimir Sementsov-Ogievskiy, 2020/07/03
- [PATCH v11 7/8] nbd: introduce ERRP_AUTO_PROPAGATE, Vladimir Sementsov-Ogievskiy, 2020/07/03
- [PATCH v11 8/8] xen: introduce ERRP_AUTO_PROPAGATE, Vladimir Sementsov-Ogievskiy, 2020/07/03
- Re: [PATCH v11 8/8] xen: introduce ERRP_AUTO_PROPAGATE,
Philippe Mathieu-Daudé <=