* [tip: x86/mm] mm: Remove pointless barrier() after pmdp_get_lockless()
@ 2022-11-02 9:12 tip-bot2 for Peter Zijlstra
0 siblings, 0 replies; 3+ messages in thread
From: tip-bot2 for Peter Zijlstra @ 2022-11-02 9:12 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Zijlstra (Intel), x86, linux-kernel
The following commit has been merged into the x86/mm branch of tip:
Commit-ID: 0aa82c4e78ca59a2246a28112adbee7d0a692f27
Gitweb: https://git.kernel.org/tip/0aa82c4e78ca59a2246a28112adbee7d0a692f27
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Fri, 21 Oct 2022 13:47:29 +02:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Tue, 01 Nov 2022 13:44:05 +01:00
mm: Remove pointless barrier() after pmdp_get_lockless()
pmdp_get_lockless() should itself imply any ordering required.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20221022114425.298833095%40infradead.org
---
mm/hmm.c | 1 -
mm/vmscan.c | 3 ---
2 files changed, 4 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index 39cf50d..601a99c 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -362,7 +362,6 @@ again:
* values.
*/
pmd = pmdp_get_lockless(pmdp);
- barrier();
if (!pmd_devmap(pmd) && !pmd_trans_huge(pmd))
goto again;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 88ef873..4936a88 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4041,9 +4041,6 @@ restart:
for (i = pmd_index(start), addr = start; addr != end; i++, addr = next) {
pmd_t val = pmdp_get_lockless(pmd + i);
- /* for pmdp_get_lockless() */
- barrier();
-
next = pmd_addr_end(addr, end);
if (!pmd_present(val) || is_huge_zero_pmd(val)) {
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [tip: x86/mm] mm: Remove pointless barrier() after pmdp_get_lockless()
@ 2022-12-17 18:55 tip-bot2 for Peter Zijlstra
0 siblings, 0 replies; 3+ messages in thread
From: tip-bot2 for Peter Zijlstra @ 2022-12-17 18:55 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Zijlstra (Intel), x86, linux-kernel
The following commit has been merged into the x86/mm branch of tip:
Commit-ID: eb780dcae02d5a71e6979aa7b8c708dea8597adf
Gitweb: https://git.kernel.org/tip/eb780dcae02d5a71e6979aa7b8c708dea8597adf
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Fri, 21 Oct 2022 13:47:29 +02:00
Committer: Dave Hansen <dave.hansen@linux.intel.com>
CommitterDate: Thu, 15 Dec 2022 10:37:27 -08:00
mm: Remove pointless barrier() after pmdp_get_lockless()
pmdp_get_lockless() should itself imply any ordering required.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20221022114425.298833095%40infradead.org
---
mm/hmm.c | 1 -
mm/vmscan.c | 3 ---
2 files changed, 4 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index 39cf50d..601a99c 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -362,7 +362,6 @@ again:
* values.
*/
pmd = pmdp_get_lockless(pmdp);
- barrier();
if (!pmd_devmap(pmd) && !pmd_trans_huge(pmd))
goto again;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 88ef873..4936a88 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4041,9 +4041,6 @@ restart:
for (i = pmd_index(start), addr = start; addr != end; i++, addr = next) {
pmd_t val = pmdp_get_lockless(pmd + i);
- /* for pmdp_get_lockless() */
- barrier();
-
next = pmd_addr_end(addr, end);
if (!pmd_present(val) || is_huge_zero_pmd(val)) {
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [tip: x86/mm] mm: Remove pointless barrier() after pmdp_get_lockless()
@ 2022-11-03 21:15 tip-bot2 for Peter Zijlstra
0 siblings, 0 replies; 3+ messages in thread
From: tip-bot2 for Peter Zijlstra @ 2022-11-03 21:15 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Zijlstra (Intel), x86, linux-kernel
The following commit has been merged into the x86/mm branch of tip:
Commit-ID: 28fec83baabe2b72fa6ebbc178e979917f97c2f6
Gitweb: https://git.kernel.org/tip/28fec83baabe2b72fa6ebbc178e979917f97c2f6
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Fri, 21 Oct 2022 13:47:29 +02:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Thu, 03 Nov 2022 22:04:29 +01:00
mm: Remove pointless barrier() after pmdp_get_lockless()
pmdp_get_lockless() should itself imply any ordering required.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20221022114425.298833095%40infradead.org
---
mm/hmm.c | 1 -
mm/vmscan.c | 3 ---
2 files changed, 4 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index 39cf50d..601a99c 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -362,7 +362,6 @@ again:
* values.
*/
pmd = pmdp_get_lockless(pmdp);
- barrier();
if (!pmd_devmap(pmd) && !pmd_trans_huge(pmd))
goto again;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 88ef873..4936a88 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4041,9 +4041,6 @@ restart:
for (i = pmd_index(start), addr = start; addr != end; i++, addr = next) {
pmd_t val = pmdp_get_lockless(pmd + i);
- /* for pmdp_get_lockless() */
- barrier();
-
next = pmd_addr_end(addr, end);
if (!pmd_present(val) || is_huge_zero_pmd(val)) {
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-12-17 18:56 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2022-11-02 9:12 [tip: x86/mm] mm: Remove pointless barrier() after pmdp_get_lockless() tip-bot2 for Peter Zijlstra
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