ARM: 9521/1: cacheinfo: count external caches in early_cache_level()

early_cache_level() counts only caches described by CLIDR. An external
PL310 is absent from CLIDR, and its arm,pl310-cache compatible is not
accepted by init_of_cache_level(), so early allocation falls back to
an incomplete count. init_cache_level() later adds the DT-described
L2, forcing reallocation on the secondary CPU with interrupts disabled.
This defeats early allocation on PREEMPT_RT.

Use init_cache_level() for early sizing too, so the initial allocation
includes external caches described by the device tree.

Assisted-by: LLM

Cc: stable@vger.kernel.org
Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20260912195552.76673-3-kmehltretter@gmail.com/
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

0 files changed, 0 insertions, 0 deletions