From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>
Subject: [RFC 3/4] devtools/cocci: add script to find where rte_calloc should be used
Date: Thu, 25 Apr 2024 11:24:00 -0700 [thread overview]
Message-ID: <20240425182738.4771-4-stephen@networkplumber.org> (raw)
In-Reply-To: <20240425182738.4771-1-stephen@networkplumber.org>
Better to use ret_calloc() than directly multiply up the
sizes of objects.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
devtools/cocci/prefer-calloc.cocci | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 devtools/cocci/prefer-calloc.cocci
diff --git a/devtools/cocci/prefer-calloc.cocci b/devtools/cocci/prefer-calloc.cocci
new file mode 100644
index 0000000000..77defed9f6
--- /dev/null
+++ b/devtools/cocci/prefer-calloc.cocci
@@ -0,0 +1,19 @@
+//
+// Prefer use of calloc over zmalloc when allocating multiple objects
+//
+@@
+expression name, T, num, socket, align;
+@@
+(
+- rte_zmalloc(name, num * sizeof(T), align)
++ rte_calloc(name, num, sizeof(T), align)
+|
+- rte_zmalloc(name, sizeof(T) * num, align)
++ rte_calloc(name, num, sizeof(T), align)
+|
+- rte_zmalloc_socket(name, num * sizeof(T), align, socket)
++ rte_calloc_socket(name, num, sizeof(T), align, socket)
+|
+- rte_zmalloc_socket(name, sizeof(T) * num, align, socket)
++ rte_calloc_socket(name, num, sizeof(T), align, socket)
+)
--
2.43.0
next prev parent reply other threads:[~2024-04-25 18:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 18:23 [RFC 0/4] malloc type argument cleanup (part 1) Stephen Hemminger
2024-04-25 18:23 ` [RFC 1/4] rte_malloc: document that type is unused Stephen Hemminger
2024-04-25 18:31 ` Tyler Retzlaff
2024-04-25 18:42 ` Stephen Hemminger
2024-04-25 18:23 ` [RFC 2/4] devtools/cocci: add script to find unnecessary malloc type Stephen Hemminger
2024-04-25 18:24 ` Stephen Hemminger [this message]
2024-04-25 18:24 ` [RFC 4/4] eal/malloc: remove type argument from internal malloc routines Stephen Hemminger
2024-04-26 16:16 ` Tyler Retzlaff
2024-04-26 22:52 ` Stephen Hemminger
2024-04-26 23:06 ` Tyler Retzlaff
2024-04-26 21:32 ` [RFC 0/4] malloc type argument cleanup (part 1) Patrick Robb
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