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Date: Sun, 9 Dec 2018 17:00:22 +0200 From: Mike Rapoport <rppt@...ux.ibm.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Arnd Bergmann <arnd@...db.de>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, "David S. Miller" <davem@...emloft.net>, Guan Xuetao <gxt@....edu.cn>, Greentime Hu <green.hu@...il.com>, Jonas Bonn <jonas@...thpole.se>, Michael Ellerman <mpe@...erman.id.au>, Michal Hocko <mhocko@...e.com>, Michal Simek <monstr@...str.eu>, Mark Salter <msalter@...hat.com>, Paul Mackerras <paulus@...ba.org>, Rich Felker <dalias@...c.org>, Russell King <linux@...linux.org.uk>, Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>, Stafford Horne <shorne@...il.com>, Vincent Chen <deanbo422@...il.com>, Yoshinori Sato <ysato@...rs.sourceforge.jp>, linux-arm-kernel@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, linux-sh@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, openrisc@...ts.librecores.org, sparclinux@...r.kernel.org, Mike Rapoport <rppt@...ux.ibm.com> Subject: [PATCH v3 4/6] openrisc: simplify pte_alloc_one_kernel() 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 <rppt@...ux.ibm.com> Acked-by: Stafford Horne <shorne@...il.com> --- 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
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