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tracing: Use vmalloc_array() to improve code 

Remove array_size() calls and replace vmalloc() with vmalloc_array() in
tracing_map_sort_entries().  vmalloc_array() is optimized better, uses
fewer instructions, and handles overflow more concisely[1].

[1]: https://lore.kernel.org/lkml/abc66ec5-85a4-47e1-9759-2f60ab111971@vivo.com/

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20250817084725.59477-1-rongqianfeng@vivo.com
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Qianfeng Rong 2025-08-17 16:47:25 +08:00 committed by Steven Rostedt (Google)
parent 3add2d34bd
commit 09da59344a
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/tracing_map.c
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@ -1076,7 +1076,7 @@ int tracing_map_sort_entries(struct tracing_map *map,
struct tracing_map_sort_entry *sort_entry, **entries;
int i, n_entries, ret;
entries = vmalloc(array_size(sizeof(sort_entry), map->max_elts));
entries = vmalloc_array(map->max_elts, sizeof(sort_entry));
if (!entries)
return -ENOMEM;