[PATCH] i915: change pr_info to pr_info_ratelimited

[Mikulas Patocka <mpatocka@redhat.com>]

Zdenek Kabelac reported that his syslog was flooded with many messages:
Purging GPU memory, 0 pages freed, 0 pages still pinned, 2029 pages left available.

It happened when he was testing the VDO device mapper module (which
requires a lot of kernel memory).

This commit changes the message to be ratelimited, so that it doesn't spam 
the syslog.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>

---
 drivers/gpu/drm/i915/gem/i915_gem_shrinker.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
===================================================================
--- linux-2.6.orig/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c	2024-03-11 12:53:59.000000000 +0100
+++ linux-2.6/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c	2024-08-05 16:07:49.000000000 +0200
@@ -375,7 +375,7 @@ i915_gem_shrinker_oom(struct notifier_bl
 	spin_unlock_irqrestore(&i915->mm.obj_lock, flags);
 
 	if (freed_pages || available)
-		pr_info("Purging GPU memory, %lu pages freed, "
+		pr_info_ratelimited("Purging GPU memory, %lu pages freed, "
 			"%lu pages still pinned, %lu pages left available.\n",
 			freed_pages, unevictable, available);