From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id C5CAE3858D32; Mon, 12 Feb 2024 13:23:03 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C5CAE3858D32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1707744183; bh=TIXFn1HO+NxfE56cJpokAfAhxNEZzYwm+gYs6jhLBBY=; h=From:To:Subject:Date:From; b=Eiw1/XiJjnnna5jeBsK2VZ8KPp+dmQUcwF2pe7wV6TSsvJW6WD4Bl8ksTLz02dr7w s4bOxQ0dr0YvV3oj4Aj+s7xVkhEH7rtIsifWRut7MNbnG+s1QiX5MRayyTWD6sl3uF PFxCN38ORZslHkXC+oEQabmDqFiWSquCEAD19VNc= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Adhemerval Zanella To: glibc-cvs@sourceware.org Subject: [glibc/release/2.35/master] malloc: Use __get_nprocs on arena_get2 (BZ 30945) X-Act-Checkin: glibc X-Git-Author: Adhemerval Zanella X-Git-Refname: refs/heads/release/2.35/master X-Git-Oldrev: 1a3326df930c477ea379942488c4377017d5471e X-Git-Newrev: d47c5e4db7924bb10efe14b787c4bd868b604e48 Message-Id: <20240212132303.C5CAE3858D32@sourceware.org> Date: Mon, 12 Feb 2024 13:23:03 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d47c5e4db7924bb10efe14b787c4bd868b604e48 commit d47c5e4db7924bb10efe14b787c4bd868b604e48 Author: Adhemerval Zanella Date: Wed Oct 11 13:43:56 2023 -0300 malloc: Use __get_nprocs on arena_get2 (BZ 30945) This restore the 2.33 semantic for arena_get2. It was changed by 11a02b035b46 to avoid arena_get2 call malloc (back when __get_nproc was refactored to use an scratch_buffer - 903bc7dcc2acafc). The __get_nproc was refactored over then and now it also avoid to call malloc. The 11a02b035b46 did not take in consideration any performance implication, which should have been discussed properly. The __get_nprocs_sched is still used as a fallback mechanism if procfs and sysfs is not acessible. Checked on x86_64-linux-gnu. Reviewed-by: DJ Delorie (cherry picked from commit 472894d2cfee5751b44c0aaa71ed87df81c8e62e) Diff: --- include/sys/sysinfo.h | 4 ---- malloc/arena.c | 2 +- misc/getsysstats.c | 6 ------ sysdeps/mach/getsysstats.c | 6 ------ sysdeps/unix/sysv/linux/getsysstats.c | 2 +- 5 files changed, 2 insertions(+), 18 deletions(-) diff --git a/include/sys/sysinfo.h b/include/sys/sysinfo.h index c490561581..65742b1036 100644 --- a/include/sys/sysinfo.h +++ b/include/sys/sysinfo.h @@ -14,10 +14,6 @@ libc_hidden_proto (__get_nprocs_conf) extern int __get_nprocs (void); libc_hidden_proto (__get_nprocs) -/* Return the number of available processors which the process can - be scheduled. */ -extern int __get_nprocs_sched (void) attribute_hidden; - /* Return number of physical pages of memory in the system. */ extern long int __get_phys_pages (void); libc_hidden_proto (__get_phys_pages) diff --git a/malloc/arena.c b/malloc/arena.c index 0a684a720d..a1ee7928d3 100644 --- a/malloc/arena.c +++ b/malloc/arena.c @@ -937,7 +937,7 @@ arena_get2 (size_t size, mstate avoid_arena) narenas_limit = mp_.arena_max; else if (narenas > mp_.arena_test) { - int n = __get_nprocs_sched (); + int n = __get_nprocs (); if (n >= 1) narenas_limit = NARENAS_FROM_NCORES (n); diff --git a/misc/getsysstats.c b/misc/getsysstats.c index e56aff0f37..660f64eb80 100644 --- a/misc/getsysstats.c +++ b/misc/getsysstats.c @@ -44,12 +44,6 @@ weak_alias (__get_nprocs, get_nprocs) link_warning (get_nprocs, "warning: get_nprocs will always return 1") -int -__get_nprocs_sched (void) -{ - return 1; -} - long int __get_phys_pages (void) { diff --git a/sysdeps/mach/getsysstats.c b/sysdeps/mach/getsysstats.c index 37ea5e6a7a..80ea7e17cb 100644 --- a/sysdeps/mach/getsysstats.c +++ b/sysdeps/mach/getsysstats.c @@ -62,12 +62,6 @@ __get_nprocs (void) libc_hidden_def (__get_nprocs) weak_alias (__get_nprocs, get_nprocs) -int -__get_nprocs_sched (void) -{ - return __get_nprocs (); -} - /* Return the number of physical pages on the system. */ long int __get_phys_pages (void) diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c index d1ea074f0d..42715e1cfd 100644 --- a/sysdeps/unix/sysv/linux/getsysstats.c +++ b/sysdeps/unix/sysv/linux/getsysstats.c @@ -30,7 +30,7 @@ #include #include -int +static int __get_nprocs_sched (void) { enum