Message ID | 20191003013325.2614-12-leonardo@linux.ibm.com (mailing list archive) |
---|---|
State | Superseded, archived |
Headers | show
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Thu, 3 Oct 2019 01:36:15 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C1A3A78060; Thu, 3 Oct 2019 01:36:02 +0000 (GMT) Received: from LeoBras.ibmuc.com (unknown [9.85.174.224]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 3 Oct 2019 01:36:02 +0000 (GMT) From: Leonardo Bras <leonardo@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v5 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing Date: Wed, 2 Oct 2019 22:33:25 -0300 Message-Id: <20191003013325.2614-12-leonardo@linux.ibm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191003013325.2614-1-leonardo@linux.ibm.com> References: <20191003013325.2614-1-leonardo@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-10-03_01:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=636 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910030012 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: Song Liu <songliubraving@fb.com>, Michal Hocko <mhocko@suse.com>, "Peter Zijlstra \(Intel\)" <peterz@infradead.org>, "Dmitry V. Levin" <ldv@altlinux.org>, Keith Busch <keith.busch@intel.com>, Paul Mackerras <paulus@samba.org>, Christoph Lameter <cl@linux.com>, Ira Weiny <ira.weiny@intel.com>, Thomas Gleixner <tglx@linutronix.de>, Elena Reshetova <elena.reshetova@intel.com>, Andrea Arcangeli <aarcange@redhat.com>, Santosh Sivaraj <santosh@fossix.org>, Davidlohr Bueso <dave@stgolabs.net>, "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>, Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>, Mike Rapoport <rppt@linux.ibm.com>, Jason Gunthorpe <jgg@ziepe.ca>, Allison Randal <allison@lohutok.net>, Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>, Leonardo Bras <leonardo@linux.ibm.com>, Alexey Dobriyan <adobriyan@gmail.com>, Ingo Molnar <mingo@kernel.org>, Ralph Campbell <rcampbell@nvidia.com>, Arnd Bergmann <arnd@arndb.de>, Jann Horn <jannh@google.com>, John Hubbard <jhubbard@nvidia.com>, Jesper Dangaard Brouer <brouer@redhat.com>, Nicholas Piggin <npiggin@gmail.com>, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, Al Viro <viro@zeniv.linux.org.uk>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Dan Williams <dan.j.williams@intel.com>, Reza Arbab <arbab@linux.ibm.com>, Vlastimil Babka <vbabka@suse.cz>, Christian Brauner <christian.brauner@ubuntu.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Souptick Joarder <jrdr.linux@gmail.com>, Andrew Morton <akpm@linux-foundation.org>, Logan Gunthorpe <logang@deltatee.com>, Roman Gushchin <guro@fb.com>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org> |
Series |
Introduces new count-based method for tracking lockless pagetable walks
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expand
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Context | Check | Description |
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snowpatch_ozlabs/apply_patch | warning | Failed to apply on branch next (6edfc6487b474fe01857dc3f1a9cd701bb9b21c8) |
snowpatch_ozlabs/apply_patch | fail | Failed to apply to any branch |
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c index ae557fdce9a3..0fef9400f210 100644 --- a/arch/powerpc/mm/book3s64/pgtable.c +++ b/arch/powerpc/mm/book3s64/pgtable.c @@ -95,7 +95,8 @@ static void do_nothing(void *unused) void serialize_against_pte_lookup(struct mm_struct *mm) { smp_mb(); - smp_call_function_many(mm_cpumask(mm), do_nothing, NULL, 1); + if (running_lockless_pgtbl_walk(mm)) + smp_call_function_many(mm_cpumask(mm), do_nothing, NULL, 1); } /*
Skips slow part of serialize_against_pte_lookup if there is no running lockless pagetable walk. Signed-off-by: Leonardo Bras <leonardo@linux.ibm.com> --- arch/powerpc/mm/book3s64/pgtable.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)