From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, linux-fbdev@vger.kernel.org,
dri-devel@lists.freedesktop.org,
David Hildenbrand <david@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Mike Rapoport <rppt@kernel.org>,
Oscar Salvador <osalvador@suse.de>,
Michal Hocko <mhocko@kernel.org>,
Wei Yang <richard.weiyang@linux.alibaba.com>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Sam Ravnborg <sam@ravnborg.org>
Subject: [PATCH v1 1/2] video: fbdev: acornfb: remove free_unused_pages()
Date: Tue, 26 Jan 2021 19:21:12 +0100 [thread overview]
Message-ID: <20210126182113.19892-2-david@redhat.com> (raw)
In-Reply-To: <20210126182113.19892-1-david@redhat.com>
This function is never used and it is one of the last remaining user of
__free_reserved_page(). Let's just drop it.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
drivers/video/fbdev/acornfb.c | 34 ----------------------------------
1 file changed, 34 deletions(-)
diff --git a/drivers/video/fbdev/acornfb.c b/drivers/video/fbdev/acornfb.c
index bcc92aecf666..1b72edc01cfb 100644
--- a/drivers/video/fbdev/acornfb.c
+++ b/drivers/video/fbdev/acornfb.c
@@ -921,40 +921,6 @@ static int acornfb_detect_monitortype(void)
return 4;
}
-/*
- * This enables the unused memory to be freed on older Acorn machines.
- * We are freeing memory on behalf of the architecture initialisation
- * code here.
- */
-static inline void
-free_unused_pages(unsigned int virtual_start, unsigned int virtual_end)
-{
- int mb_freed = 0;
-
- /*
- * Align addresses
- */
- virtual_start = PAGE_ALIGN(virtual_start);
- virtual_end = PAGE_ALIGN(virtual_end);
-
- while (virtual_start < virtual_end) {
- struct page *page;
-
- /*
- * Clear page reserved bit,
- * set count to 1, and free
- * the page.
- */
- page = virt_to_page(virtual_start);
- __free_reserved_page(page);
-
- virtual_start += PAGE_SIZE;
- mb_freed += PAGE_SIZE / 1024;
- }
-
- printk("acornfb: freed %dK memory\n", mb_freed);
-}
-
static int acornfb_probe(struct platform_device *dev)
{
unsigned long size;
--
2.29.2
next prev parent reply other threads:[~2021-01-26 22:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 18:21 [PATCH v1 0/2] mm: simplify free_highmem_page() and free_reserved_page() David Hildenbrand
2021-01-26 18:21 ` David Hildenbrand [this message]
2021-01-27 8:44 ` [PATCH v1 1/2] video: fbdev: acornfb: remove free_unused_pages() Geert Uytterhoeven
2021-01-27 11:53 ` Oscar Salvador
2021-01-28 3:54 ` Anshuman Khandual
2021-01-26 18:21 ` [PATCH v1 2/2] mm: simplify free_highmem_page() and free_reserved_page() David Hildenbrand
2021-01-27 11:51 ` Oscar Salvador
2021-01-27 12:24 ` David Hildenbrand
2021-01-28 4:12 ` Anshuman Khandual
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