From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Date: Tue, 24 Mar 2020 10:40:05 +0000 Subject: [PATCH 4/4] sparc32: mm: Reduce allocation size for PMD and PTE tables Message-Id: <20200324104005.11279-5-will@kernel.org> List-Id: References: <20200324104005.11279-1-will@kernel.org> In-Reply-To: <20200324104005.11279-1-will@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Cc: kernel-team@android.com, Will Deacon , "David S. Miller" , Peter Zijlstra , Nick Desaulniers , Matt Fleming , sparclinux@vger.kernel.org Now that the page table allocator can free page table allocations smaller than PAGE_SIZE, reduce the size of the PMD and PTE allocations to avoid needlessly wasting memory. Cc: "David S. Miller" Cc: Peter Zijlstra Signed-off-by: Will Deacon --- arch/sparc/include/asm/pgtsrmmu.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h index 58ea8e8c6ee7..7708d015712b 100644 --- a/arch/sparc/include/asm/pgtsrmmu.h +++ b/arch/sparc/include/asm/pgtsrmmu.h @@ -17,8 +17,8 @@ /* Number of contexts is implementation-dependent; 64k is the most we support */ #define SRMMU_MAX_CONTEXTS 65536 -#define SRMMU_PTE_TABLE_SIZE (PAGE_SIZE) -#define SRMMU_PMD_TABLE_SIZE (PAGE_SIZE) +#define SRMMU_PTE_TABLE_SIZE (PTRS_PER_PTE*4) +#define SRMMU_PMD_TABLE_SIZE (PTRS_PER_PMD*4) #define SRMMU_PGD_TABLE_SIZE (PTRS_PER_PGD*4) /* Definition of the values in the ET field of PTD's and PTE's */ -- 2.20.1