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From: Peter Zijlstra <peterz@infradead.org>
To: mingo@kernel.org, torvalds@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, will@kernel.org,
	paulmck@kernel.org, hch@lst.de, axboe@kernel.dk,
	chris@chris-wilson.co.uk, davem@davemloft.net, kuba@kernel.org,
	fweisbec@gmail.com, oleg@redhat.com, peterz@infradead.org
Subject: [RFC][PATCH 4/9] irq_work: Unconditionally build on SMP
Date: Wed, 22 Jul 2020 17:01:53 +0200	[thread overview]
Message-ID: <20200722153017.243366177@infradead.org> (raw)
In-Reply-To: 20200722150149.525408253@infradead.org


Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 kernel/Makefile   |    1 +
 kernel/irq_work.c |    3 +++
 2 files changed, 4 insertions(+)

--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -105,6 +105,7 @@ obj-$(CONFIG_TRACE_CLOCK) += trace/
 obj-$(CONFIG_RING_BUFFER) += trace/
 obj-$(CONFIG_TRACEPOINTS) += trace/
 obj-$(CONFIG_IRQ_WORK) += irq_work.o
+obj-$(CONFIG_SMP) += irq_work.o
 obj-$(CONFIG_CPU_PM) += cpu_pm.o
 obj-$(CONFIG_BPF) += bpf/
 obj-$(CONFIG_KCSAN) += kcsan/
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -20,6 +20,7 @@
 #include <linux/smp.h>
 #include <asm/processor.h>
 
+#ifdef CONFIG_IRQ_WORK
 
 static DEFINE_PER_CPU(struct llist_head, raised_list);
 static DEFINE_PER_CPU(struct llist_head, lazy_list);
@@ -212,3 +213,5 @@ void irq_work_sync(struct irq_work *work
 		cpu_relax();
 }
 EXPORT_SYMBOL_GPL(irq_work_sync);
+
+#endif /* CONFIG_IRQ_WORK */



  parent reply	other threads:[~2020-07-22 15:33 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-22 15:01 [RFC][PATCH 0/9] smp: irq_work / smp_call_function rework Peter Zijlstra
2020-07-22 15:01 ` [RFC][PATCH 1/9] irq_work: Cleanup Peter Zijlstra
2020-07-23 16:14   ` Paul E. McKenney
2020-08-17  9:03     ` peterz
2020-08-17  9:16       ` peterz
2020-08-17 13:00         ` Paul E. McKenney
2020-08-18 10:34           ` peterz
2020-07-25 11:58   ` Ingo Molnar
2020-07-25 17:30     ` Peter Zijlstra
2020-07-22 15:01 ` [RFC][PATCH 2/9] smp: Cleanup smp_call_function*() Peter Zijlstra
2020-07-24 18:01   ` Paul E. McKenney
2020-07-22 15:01 ` [RFC][PATCH 3/9] irq_work: Optimize irq_work_single() Peter Zijlstra
2020-07-22 15:01 ` Peter Zijlstra [this message]
2020-07-22 15:01 ` [RFC][PATCH 5/9] irq_work: Provide irq_work_queue_remote() Peter Zijlstra
2020-07-22 19:59   ` Paul E. McKenney
2020-07-22 15:01 ` [RFC][PATCH 6/9] irq_work: Provide irq_work_queue_remote_static() Peter Zijlstra
2020-07-22 15:01 ` [RFC][PATCH 7/9] smp,irq_work: Use the new irq_work API Peter Zijlstra
2020-07-22 22:09   ` Paul E. McKenney
2020-07-22 15:01 ` [RFC][PATCH 8/9] smp: Make smp_call_function_single_async() safer Peter Zijlstra
2020-07-22 15:01 ` [RFC][PATCH 9/9] irq_work: Add a few comments Peter Zijlstra
2020-07-22 20:51 ` [RFC][PATCH 0/9] smp: irq_work / smp_call_function rework Paul E. McKenney
2020-07-22 23:30   ` Peter Zijlstra

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