From patchwork Sat Jan 27 22:51:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 25628 Received: (qmail 4899 invoked by alias); 27 Jan 2018 22:51:12 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 4769 invoked by uid 89); 27 Jan 2018 22:51:12 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-26.1 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, SPF_HELO_PASS, SPF_NEUTRAL autolearn=ham version=3.3.2 spammy= X-HELO: hera.aquilenet.fr From: Samuel Thibault To: libc-alpha@sourceware.org Cc: Samuel Thibault Subject: [hurd,commited 6/7] hurd: Fix enabling vm_copy Date: Sat, 27 Jan 2018 23:51:01 +0100 Message-Id: <20180127225102.11373-7-samuel.thibault@ens-lyon.org> In-Reply-To: <20180127225102.11373-1-samuel.thibault@ens-lyon.org> References: <20180127225102.11373-1-samuel.thibault@ens-lyon.org> Benchmarked on http://lists.gnu.org/archive/html/bug-hurd/2014-12/msg00081.html * sysdeps/mach/pagecopy.h (PAGE_THRESHOLD): Rename to PAGE_COPY_THRESHOLD and set to benchmarked 16384. --- ChangeLog | 2 ++ sysdeps/mach/pagecopy.h | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/ChangeLog b/ChangeLog index 5e62415607..95e2c07df5 100644 --- a/ChangeLog +++ b/ChangeLog @@ -31,6 +31,8 @@ __task_terminate would ever return successfully. * sysdeps/mach/hurd/profil.c (special_profil_failure): Move variable to global scope. + * sysdeps/mach/pagecopy.h (PAGE_THRESHOLD): Rename to + PAGE_COPY_THRESHOLD and set to benchmarked 16384. 2018-01-27 James Clarke diff --git a/sysdeps/mach/pagecopy.h b/sysdeps/mach/pagecopy.h index 6285ffb416..8583df4569 100644 --- a/sysdeps/mach/pagecopy.h +++ b/sysdeps/mach/pagecopy.h @@ -19,8 +19,8 @@ #include /* Threshold at which vm_copy is more efficient than well-optimized copying - by words. This parameter should be tuned as necessary. */ -#define PAGE_THRESHOLD (2 * PAGE_SIZE) /* XXX ? */ + by words. */ +#define PAGE_COPY_THRESHOLD (16384) #define PAGE_SIZE __vm_page_size #define PAGE_COPY_FWD(dstp, srcp, nbytes_left, nbytes) \