From: Marcelo Tosatti <mtosatti@redhat.com>
To: Christoph Lameter <cl@linux.com>
Cc: Aaron Tomlin <atomlin@atomlin.com>,
Frederic Weisbecker <frederic@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Russell King <linux@armlinux.org.uk>,
Huacai Chen <chenhuacai@kernel.org>,
Heiko Carstens <hca@linux.ibm.com>,
x86@kernel.org, Vlastimil Babka <vbabka@suse.cz>,
Michal Hocko <mhocko@suse.com>,
Marcelo Tosatti <mtosatti@redhat.com>
Subject: [PATCH v8 06/13] add this_cpu_cmpxchg_local and asm-generic definitions
Date: Mon, 15 May 2023 15:00:21 -0300 [thread overview]
Message-ID: <20230515180138.566700916@redhat.com> (raw)
In-Reply-To: 20230515180015.016409657@redhat.com
Goal is to have vmstat_shepherd to transfer from
per-CPU counters to global counters remotely. For this,
an atomic this_cpu_cmpxchg is necessary.
Add this_cpu_cmpxchg_local_ helpers to asm-generic/percpu.h.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
Index: linux-vmstat-remote/include/asm-generic/percpu.h
===================================================================
--- linux-vmstat-remote.orig/include/asm-generic/percpu.h
+++ linux-vmstat-remote/include/asm-generic/percpu.h
@@ -424,6 +424,23 @@ do { \
this_cpu_generic_cmpxchg(pcp, oval, nval)
#endif
+#ifndef this_cpu_cmpxchg_local_1
+#define this_cpu_cmpxchg_local_1(pcp, oval, nval) \
+ this_cpu_generic_cmpxchg(pcp, oval, nval)
+#endif
+#ifndef this_cpu_cmpxchg_local_2
+#define this_cpu_cmpxchg_local_2(pcp, oval, nval) \
+ this_cpu_generic_cmpxchg(pcp, oval, nval)
+#endif
+#ifndef this_cpu_cmpxchg_local_4
+#define this_cpu_cmpxchg_local_4(pcp, oval, nval) \
+ this_cpu_generic_cmpxchg(pcp, oval, nval)
+#endif
+#ifndef this_cpu_cmpxchg_local_8
+#define this_cpu_cmpxchg_local_8(pcp, oval, nval) \
+ this_cpu_generic_cmpxchg(pcp, oval, nval)
+#endif
+
#ifndef this_cpu_cmpxchg_double_1
#define this_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \
this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
Index: linux-vmstat-remote/include/linux/percpu-defs.h
===================================================================
--- linux-vmstat-remote.orig/include/linux/percpu-defs.h
+++ linux-vmstat-remote/include/linux/percpu-defs.h
@@ -513,6 +513,8 @@ do { \
#define this_cpu_xchg(pcp, nval) __pcpu_size_call_return2(this_cpu_xchg_, pcp, nval)
#define this_cpu_cmpxchg(pcp, oval, nval) \
__pcpu_size_call_return2(this_cpu_cmpxchg_, pcp, oval, nval)
+#define this_cpu_cmpxchg_local(pcp, oval, nval) \
+ __pcpu_size_call_return2(this_cpu_cmpxchg_local_, pcp, oval, nval)
#define this_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
__pcpu_double_call_return_bool(this_cpu_cmpxchg_double_, pcp1, pcp2, oval1, oval2, nval1, nval2)
next prev parent reply other threads:[~2023-05-15 18:03 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-15 18:00 [PATCH v8 00/13] fold per-CPU vmstats remotely Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 01/13] vmstat: allow_direct_reclaim should use zone_page_state_snapshot Marcelo Tosatti
2023-05-24 12:34 ` Michal Hocko
2023-05-25 7:05 ` Aaron Tomlin
2023-05-15 18:00 ` [PATCH v8 02/13] this_cpu_cmpxchg: ARM64: switch this_cpu_cmpxchg to locked, add _local function Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 03/13] this_cpu_cmpxchg: loongarch: " Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 04/13] this_cpu_cmpxchg: S390: " Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 05/13] this_cpu_cmpxchg: x86: " Marcelo Tosatti
2023-05-15 18:00 ` Marcelo Tosatti [this message]
2023-05-15 18:00 ` [PATCH v8 07/13] convert this_cpu_cmpxchg users to this_cpu_cmpxchg_local Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 08/13] mm/vmstat: switch counter modification to cmpxchg Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 09/13] vmstat: switch per-cpu vmstat counters to 32-bits Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 10/13] mm/vmstat: use xchg in cpu_vm_stats_fold Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 11/13] mm/vmstat: switch vmstat shepherd to flush per-CPU counters remotely Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 12/13] mm/vmstat: refresh stats remotely instead of via work item Marcelo Tosatti
2023-05-15 18:00 ` [PATCH v8 13/13] vmstat: add pcp remote node draining via cpu_vm_stats_fold Marcelo Tosatti
2023-05-16 8:09 ` [PATCH v8 00/13] fold per-CPU vmstats remotely Christoph Lameter
2023-05-16 18:02 ` Marcelo Tosatti
2023-05-24 12:51 ` Michal Hocko
2023-05-24 13:53 ` Marcelo Tosatti
2023-05-25 6:47 ` Michal Hocko
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