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
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 <rcampbe>
Subject: [PATCH v5 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing
Date: Wed, 2 Oct 2019 22:33:25 -0300 [thread overview]
Message-ID: <20191003013325.2614-12-leonardo@linux.ibm.com> (raw)
In-Reply-To: <20191003013325.2614-1-leonardo@linux.ibm.com>
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(-)
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);
}
/*
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
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
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>,
"Jérôme Glisse" <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>
Subject: [PATCH v5 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing
Date: Wed, 2 Oct 2019 22:33:25 -0300 [thread overview]
Message-ID: <20191003013325.2614-12-leonardo@linux.ibm.com> (raw)
In-Reply-To: <20191003013325.2614-1-leonardo@linux.ibm.com>
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(-)
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);
}
/*
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
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
Cc: "Leonardo Bras" <leonardo@linux.ibm.com>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Paul Mackerras" <paulus@samba.org>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Arnd Bergmann" <arnd@arndb.de>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
"Christophe Leroy" <christophe.leroy@c-s.fr>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>,
"Reza Arbab" <arbab@linux.ibm.com>,
"Santosh Sivaraj" <santosh@fossix.org>,
"Balbir Singh" <bsingharora@gmail.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Mike Rapoport" <rppt@linux.ibm.com>,
"Allison Randal" <allison@lohutok.net>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Dan Williams" <dan.j.williams@intel.com>,
"Vlastimil Babka" <vbabka@suse.cz>,
"Christoph Lameter" <cl@linux.com>,
"Logan Gunthorpe" <logang@deltatee.com>,
"Andrey Ryabinin" <aryabinin@virtuozzo.com>,
"Alexey Dobriyan" <adobriyan@gmail.com>,
"Souptick Joarder" <jrdr.linux@gmail.com>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>,
"Ralph Campbell" <rcampbell@nvidia.com>,
"Jesper Dangaard Brouer" <brouer@redhat.com>,
"Jann Horn" <jannh@google.com>,
"Davidlohr Bueso" <dave@stgolabs.net>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
"Ingo Molnar" <mingo@kernel.org>,
"Christian Brauner" <christian.brauner@ubuntu.com>,
"Michal Hocko" <mhocko@suse.com>,
"Elena Reshetova" <elena.reshetova@intel.com>,
"Roman Gushchin" <guro@fb.com>,
"Andrea Arcangeli" <aarcange@redhat.com>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Dmitry V. Levin" <ldv@altlinux.org>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Song Liu" <songliubraving@fb.com>,
"Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>,
"Ira Weiny" <ira.weiny@intel.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
"John Hubbard" <jhubbard@nvidia.com>,
"Keith Busch" <keith.busch@intel.com>
Subject: [PATCH v5 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing
Date: Wed, 2 Oct 2019 22:33:25 -0300 [thread overview]
Message-ID: <20191003013325.2614-12-leonardo@linux.ibm.com> (raw)
In-Reply-To: <20191003013325.2614-1-leonardo@linux.ibm.com>
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(-)
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);
}
/*
--
2.20.1
next prev parent reply other threads:[~2019-10-03 1:33 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-03 1:33 [PATCH v5 00/11] Introduces new count-based method for tracking lockless pagetable walks Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 01/11] asm-generic/pgtable: Adds generic functions to monitor lockless pgtable walks Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 7:11 ` Peter Zijlstra
2019-10-03 7:11 ` Peter Zijlstra
2019-10-03 7:11 ` Peter Zijlstra
2019-10-03 11:51 ` Peter Zijlstra
2019-10-03 11:51 ` Peter Zijlstra
2019-10-03 11:51 ` Peter Zijlstra
2019-10-03 20:40 ` John Hubbard
2019-10-03 20:40 ` John Hubbard
2019-10-03 20:40 ` John Hubbard
2019-10-04 11:24 ` Peter Zijlstra
2019-10-04 11:24 ` Peter Zijlstra
2019-10-04 11:24 ` Peter Zijlstra
2019-10-03 21:24 ` Leonardo Bras
2019-10-03 21:24 ` Leonardo Bras
2019-10-03 21:24 ` Leonardo Bras
2019-10-03 21:24 ` Leonardo Bras
2019-10-04 11:28 ` Peter Zijlstra
2019-10-04 11:28 ` Peter Zijlstra
2019-10-04 11:28 ` Peter Zijlstra
2019-10-04 11:28 ` Peter Zijlstra
2019-10-09 18:09 ` Leonardo Bras
2019-10-09 18:09 ` Leonardo Bras
2019-10-09 18:09 ` Leonardo Bras
2019-10-09 18:09 ` Leonardo Bras
2019-10-05 8:35 ` Aneesh Kumar K.V
2019-10-05 8:35 ` Aneesh Kumar K.V
2019-10-05 8:35 ` Aneesh Kumar K.V
2019-10-08 14:47 ` Kirill A. Shutemov
2019-10-08 14:47 ` Kirill A. Shutemov
2019-10-08 14:47 ` Kirill A. Shutemov
2019-10-03 1:33 ` [PATCH v5 02/11] powerpc/mm: Adds counting method " Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-08 15:11 ` Christopher Lameter
2019-10-08 15:11 ` Christopher Lameter
2019-10-08 15:11 ` Christopher Lameter
2019-10-08 17:13 ` Leonardo Bras
2019-10-08 17:13 ` Leonardo Bras
2019-10-08 17:13 ` Leonardo Bras
2019-10-08 17:43 ` Christopher Lameter
2019-10-08 17:43 ` Christopher Lameter
2019-10-08 17:43 ` Christopher Lameter
2019-10-08 18:02 ` Leonardo Bras
2019-10-08 18:02 ` Leonardo Bras
2019-10-08 18:02 ` Leonardo Bras
2019-10-08 18:27 ` Christopher Lameter
2019-10-08 18:27 ` Christopher Lameter
2019-10-08 18:27 ` Christopher Lameter
2019-10-03 1:33 ` [PATCH v5 03/11] mm/gup: Applies counting method to monitor gup_pgd_range Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 04/11] powerpc/mce_power: Applies counting method to monitor lockless pgtbl walks Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 05/11] powerpc/perf: " Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 06/11] powerpc/mm/book3s64/hash: " Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 07/11] powerpc/kvm/e500: " Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 08/11] powerpc/kvm/book3s_hv: " Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 09/11] powerpc/kvm/book3s_64: " Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` [PATCH v5 10/11] mm/Kconfig: Adds config option to track lockless pagetable walks Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 2:08 ` Qian Cai
2019-10-03 2:08 ` Qian Cai
2019-10-03 2:08 ` Qian Cai
2019-10-03 19:04 ` Leonardo Bras
2019-10-03 19:04 ` Leonardo Bras
2019-10-03 19:04 ` Leonardo Bras
2019-10-03 19:08 ` Leonardo Bras
2019-10-03 19:08 ` Leonardo Bras
2019-10-03 19:08 ` Leonardo Bras
2019-10-03 7:44 ` Peter Zijlstra
2019-10-03 7:44 ` Peter Zijlstra
2019-10-03 7:44 ` Peter Zijlstra
2019-10-03 20:40 ` Leonardo Bras
2019-10-03 20:40 ` Leonardo Bras
2019-10-03 20:40 ` Leonardo Bras
2019-10-03 20:40 ` Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras [this message]
2019-10-03 1:33 ` [PATCH v5 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing Leonardo Bras
2019-10-03 1:33 ` Leonardo Bras
2019-10-03 7:29 ` [PATCH v5 00/11] Introduces new count-based method for tracking lockless pagetable walks Peter Zijlstra
2019-10-03 7:29 ` Peter Zijlstra
2019-10-03 7:29 ` Peter Zijlstra
2019-10-03 20:36 ` Leonardo Bras
2019-10-03 20:36 ` Leonardo Bras
2019-10-03 20:36 ` Leonardo Bras
2019-10-03 20:36 ` Leonardo Bras
2019-10-03 20:49 ` John Hubbard
2019-10-03 20:49 ` John Hubbard
2019-10-03 20:49 ` John Hubbard
2019-10-03 21:38 ` Leonardo Bras
2019-10-03 21:38 ` Leonardo Bras
2019-10-03 21:38 ` Leonardo Bras
2019-10-03 21:38 ` Leonardo Bras
2019-10-04 11:42 ` Peter Zijlstra
2019-10-04 11:42 ` Peter Zijlstra
2019-10-04 11:42 ` Peter Zijlstra
2019-10-04 11:42 ` Peter Zijlstra
2019-10-04 12:57 ` Peter Zijlstra
2019-10-04 12:57 ` Peter Zijlstra
2019-10-04 12:57 ` Peter Zijlstra
2019-10-04 12:57 ` Peter Zijlstra
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