From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D9ABBE4D for ; Wed, 6 Mar 2024 21:04:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709759099; cv=none; b=Y/cg6BfCWWMjVtnrS27UgfZvvHI9pXoNEqgYJYyUbtXBFw3/N65Kt8YZPMXLYZDoM7ntC/ItYBNMetxid/76y9h44r/msAsldpMvBPW3n11iCl8ML+sXR5V3YVBV+9P0Nfs7LFujSxe4McsHJv0glIrCPBHhJsMJ/teZHjFawRk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709759099; c=relaxed/simple; bh=s2eJ0G1odN7ct9kknbRQMjfjSRCOgTBICIn3hNpCWXU=; h=Date:To:From:Subject:Message-Id; b=JAn8kgxE4m30xqJ3TZBf0bfIPKPJgBa9+3GJ1XIVE7JJRoFFti6erlDLsELN+e2pMisqQD9RH3ljqrWFFt1xIN6Z3YSGhhmmQpG9pAJp8074WVnMfVfJefSaIWHyXXkjybedWstX8GBP5GpFkHQPhXToqcRocnCsmm71pkKSW4g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=1yV7r4CY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="1yV7r4CY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9DFC8C43390; Wed, 6 Mar 2024 21:04:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1709759098; bh=s2eJ0G1odN7ct9kknbRQMjfjSRCOgTBICIn3hNpCWXU=; h=Date:To:From:Subject:From; b=1yV7r4CYhN4fwr3kPnkgIWtdyBOWwOh9ovz5QEeGUDPD65IyPBMVDBMEC9jFsEtVK HmAFbS2gD20FJOGoTF7VGr+6lQIQb4Q/ZyGysKkfttobBoNovhZgKAMDaquKDwWr5x tY/vwBBE3lxaJEsemGQ334SyAYEwHzZ/BIuAfZLk= Date: Wed, 06 Mar 2024 13:04:58 -0800 To: mm-commits@vger.kernel.org,tim.c.chen@linux.intel.com,steffen.klassert@secunet.com,rientjes@google.com,rdunlap@infradead.org,paulmck@kernel.org,muchun.song@linux.dev,mike.kravetz@oracle.com,ligang.bdlg@bytedance.com,jane.chu@oracle.com,david@redhat.com,daniel.m.jordan@oracle.com,adobriyan@gmail.com,gang.li@linux.dev,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] padata-downgrade-padata_do_multithreaded-to-serial-execution-for-non-smp.patch removed from -mm tree Message-Id: <20240306210458.9DFC8C43390@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: padata: downgrade padata_do_multithreaded to serial execution for non-SMP has been removed from the -mm tree. Its filename was padata-downgrade-padata_do_multithreaded-to-serial-execution-for-non-smp.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Gang Li Subject: padata: downgrade padata_do_multithreaded to serial execution for non-SMP Date: Thu, 22 Feb 2024 22:04:18 +0800 hugetlb parallelization depends on PADATA, and PADATA depends on SMP. PADATA consists of two distinct functionality: One part is padata_do_multithreaded which disregards order and simply divides tasks into several groups for parallel execution. Hugetlb init parallelization depends on padata_do_multithreaded. The other part is composed of a set of APIs that, while handling data in an out-of-order parallel manner, can eventually return the data with ordered sequence. Currently Only `crypto/pcrypt.c` use them. All users of PADATA of non-SMP case currently only use padata_do_multithreaded. It is easy to implement a serial one in include/linux/padata.h. And it is not necessary to implement another functionality unless the only user of crypto/pcrypt.c does not depend on SMP in the future. Link: https://lkml.kernel.org/r/20240222140422.393911-6-gang.li@linux.dev Signed-off-by: Gang Li Tested-by: Paul E. McKenney Acked-by: Daniel Jordan Cc: David Hildenbrand Cc: David Rientjes Cc: Jane Chu Cc: Muchun Song Cc: Randy Dunlap Cc: Steffen Klassert Cc: Tim Chen Cc: Alexey Dobriyan Cc: Mike Kravetz Signed-off-by: Andrew Morton --- include/linux/padata.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- a/include/linux/padata.h~padata-downgrade-padata_do_multithreaded-to-serial-execution-for-non-smp +++ a/include/linux/padata.h @@ -180,10 +180,6 @@ struct padata_instance { #ifdef CONFIG_PADATA extern void __init padata_init(void); -#else -static inline void __init padata_init(void) {} -#endif - extern struct padata_instance *padata_alloc(const char *name); extern void padata_free(struct padata_instance *pinst); extern struct padata_shell *padata_alloc_shell(struct padata_instance *pinst); @@ -194,4 +190,12 @@ extern void padata_do_serial(struct pada extern void __init padata_do_multithreaded(struct padata_mt_job *job); extern int padata_set_cpumask(struct padata_instance *pinst, int cpumask_type, cpumask_var_t cpumask); +#else +static inline void __init padata_init(void) {} +static inline void __init padata_do_multithreaded(struct padata_mt_job *job) +{ + job->thread_fn(job->start, job->start + job->size, job->fn_arg); +} +#endif + #endif _ Patches currently in -mm which might be from gang.li@linux.dev are