From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Rapoport Date: Sun, 25 Nov 2018 21:44:36 +0000 Subject: [PATCH 4/5] openrisc: simplify pte_alloc_one_kernel() Message-Id: <1543182277-8819-5-git-send-email-rppt@linux.ibm.com> List-Id: References: <1543182277-8819-1-git-send-email-rppt@linux.ibm.com> In-Reply-To: <1543182277-8819-1-git-send-email-rppt@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org The pte_alloc_one_kernel() function allocates a page using __get_free_page(GFP_KERNEL) when mm initialization is complete and memblock_phys_alloc() on the earlier stages. The physical address of the page allocated with memblock_phys_alloc() is converted to the virtual address and in the both cases the allocated page is cleared using clear_page(). The code is simplified by replacing __get_free_page() with get_zeroed_page() and by replacing memblock_phys_alloc() with memblock_alloc(). Signed-off-by: Mike Rapoport --- arch/openrisc/mm/ioremap.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/arch/openrisc/mm/ioremap.c b/arch/openrisc/mm/ioremap.c index c969752..cfef989 100644 --- a/arch/openrisc/mm/ioremap.c +++ b/arch/openrisc/mm/ioremap.c @@ -123,13 +123,10 @@ pte_t __ref *pte_alloc_one_kernel(struct mm_struct *mm, { pte_t *pte; - if (likely(mem_init_done)) { - pte = (pte_t *) __get_free_page(GFP_KERNEL); - } else { - pte = (pte_t *) __va(memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE)); - } + if (likely(mem_init_done)) + pte = (pte_t *)get_zeroed_page(GFP_KERNEL); + else + pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE); - if (pte) - clear_page(pte); return pte; } -- 2.7.4