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Re: [Qemu-devel] [PATCH 01/31] Use error_fatal to simplify obvious fatal
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH 01/31] Use error_fatal to simplify obvious fatal errors (again) |
Date: |
Mon, 8 Oct 2018 15:32:56 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 |
On 10/8/18 12:30 PM, Markus Armbruster wrote:
Add a slight improvement of the Coccinelle semantic patch from commit
07d04a0219b,
which shares the same commit title, but does not actually have a
semantic patch, but rather defers to the even older 007b065. But I'm
not too worried about either the duplicated commit title nor the chain
of references to follow - as this is a no-semantic-change patch rather
than a bugfix, it's less likely to cause confusion to any downstream
backport efforts.
and use it to clean up. It leaves dead Error * variables
behind, cleaned up manually.
Coccinelle can handle that too, if we want to make the .cocci file
longer (but off-hand, I don't remember the exact semantic patch formula
to express a variable that is initialized but then never used, as a
result of applying earlier semantic patches). So the manual cleanup for
now still seems tractable.
Cc: David Gibson <address@hidden>
Cc: Alexander Graf <address@hidden>
Cc: Eric Blake <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Signed-off-by: Markus Armbruster <address@hidden>
---
hw/intc/xics_kvm.c | 7 +------
qemu-nbd.c | 6 +-----
scripts/coccinelle/use-error_fatal.cocci | 20 ++++++++++++++++++++
vl.c | 7 +------
4 files changed, 23 insertions(+), 17 deletions(-)
create mode 100644 scripts/coccinelle/use-error_fatal.cocci
+++ b/scripts/coccinelle/use-error_fatal.cocci
@@ -0,0 +1,20 @@
+@@
+type T;
+identifier FUN, RET;
+expression list ARGS;
+expression ERR, EC, FAIL;
The slight improvement from the original git commit log script is the
addition of FAIL,
+@@
+(
+- T RET = FUN(ARGS, &ERR);
++ T RET = FUN(ARGS, &error_fatal);
+|
+- RET = FUN(ARGS, &ERR);
++ RET = FUN(ARGS, &error_fatal);
+|
+- FUN(ARGS, &ERR);
++ FUN(ARGS, &error_fatal);
+)
+- if (FAIL) {
and a check for arbitrary condition FAIL rather than a more specific ERR
!= NULL. Makes sense.
+- error_report_err(ERR);
+- exit(EC);
+- }
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
- [Qemu-devel] [PATCH 31/31] vl: Simplify call of parse_name(), (continued)
- [Qemu-devel] [PATCH 31/31] vl: Simplify call of parse_name(), Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 14/31] numa: Fix QMP command set-numa-node error handling, Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 25/31] numa: Clean up error reporting in parse_numa(), Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 01/31] Use error_fatal to simplify obvious fatal errors (again), Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 05/31] vfio: Clean up error reporting after previous commit, Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 04/31] vfio: Use warn_report() & friends to report warnings, Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 20/31] vl: Clean up error reporting in machine_set_property(), Markus Armbruster, 2018/10/08
- [Qemu-devel] [PATCH 19/31] vl: Clean up error reporting in parse_add_fd(), Markus Armbruster, 2018/10/08