From: Wander Lairson Costa <wander@redhat.com>
Date: Mon, 15 Sep 2025 18:10:56 +0000 (-0300)
Subject: rtla/actions: Fix condition for buffer reallocation
X-Git-Tag: v6.17~6^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2227f273b7dc25a791ae6b152550098aa6934b2f;p=thirdparty%2Fkernel%2Fstable.git

rtla/actions: Fix condition for buffer reallocation

The condition to check if the actions buffer needs to be resized was
incorrect. The check `self->size >= self->len` would evaluate to
true on almost every call to `actions_new()`, causing the buffer to
be reallocated unnecessarily each time an action was added.

Fix the condition to `self->len >= self.size`, ensuring
that the buffer is only resized when it is actually full.

Cc: John Kacur <jkacur@redhat.com>
Cc: Luis Goncalves <lgoncalv@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Chang Yin <cyin@redhat.com>
Cc: Costa Shulyupin <costa.shul@redhat.com>
Cc: Crystal Wood <crwood@redhat.com>
Cc: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/20250915181101.52513-1-wander@redhat.com
Fixes: 6ea082b171e00 ("rtla/timerlat: Add action on threshold feature")
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Reviewed-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---

diff --git a/tools/tracing/rtla/src/actions.c b/tools/tracing/rtla/src/actions.c
index eab51c0c0ce2c..13ff1934d47c9 100644
--- a/tools/tracing/rtla/src/actions.c
+++ b/tools/tracing/rtla/src/actions.c
@@ -49,7 +49,7 @@ actions_destroy(struct actions *self)
 static struct action *
 actions_new(struct actions *self)
 {
-	if (self->size >= self->len) {
+	if (self->len >= self->size) {
 		self->size *= 2;
 		self->list = realloc(self->list, self->size * sizeof(struct action));
 	}