linux-kernel - [tip:smp/hotplug] perf/core: Remove perf CPU notifier code

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Message-ID: <tip-89ab9cb16931873ec600a909b3a38436352e629a@git.kernel.org>
Date:	Tue, 19 Jul 2016 00:11:15 -0700
From:	tip-bot for Thomas Gleixner <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, alexander.shishkin@...ux.intel.com,
	tglx@...utronix.de, hpa@...or.com, nicolas.iooss_linux@....org,
	anna-maria@...utronix.de, peterz@...radead.org,
	paulmck@...ux.vnet.ibm.com, mingo@...nel.org,
	bigeasy@...utronix.de, acme@...nel.org,
	torvalds@...ux-foundation.org
Subject: [tip:smp/hotplug] perf/core: Remove perf CPU notifier code

Commit-ID:  89ab9cb16931873ec600a909b3a38436352e629a
Gitweb:     http://git.kernel.org/tip/89ab9cb16931873ec600a909b3a38436352e629a
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Wed, 13 Jul 2016 17:16:28 +0000
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Thu, 14 Jul 2016 09:34:42 +0200

perf/core: Remove perf CPU notifier code

All users converted to state machine callbacks.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-maria@...utronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Nicolas Iooss <nicolas.iooss_linux@....org>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: rt@...utronix.de
Link: http://lkml.kernel.org/r/20160713153335.115333381@linutronix.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 include/linux/cpu.h        |  2 --
 include/linux/perf_event.h | 35 -----------------------------------
 2 files changed, 37 deletions(-)

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 21597dc..ca2dd86 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -59,8 +59,6 @@ struct notifier_block;
  * CPU notifier priorities.
  */
 enum {
-	CPU_PRI_PERF		= 20,
-
 	/* bring up workqueues before normal notifiers and down after */
 	CPU_PRI_WORKQUEUE_UP	= 5,
 	CPU_PRI_WORKQUEUE_DOWN	= -5,
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 9abeb69..ddd3dab 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1285,41 +1285,6 @@ static inline void perf_restore_debug_store(void)			{ }
 
 #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x))
 
-/*
- * This has to have a higher priority than migration_notifier in sched/core.c.
- */
-#define perf_cpu_notifier(fn)						\
-do {									\
-	static struct notifier_block fn##_nb =				\
-		{ .notifier_call = fn, .priority = CPU_PRI_PERF };	\
-	unsigned long cpu = smp_processor_id();				\
-	unsigned long flags;						\
-									\
-	cpu_notifier_register_begin();					\
-	fn(&fn##_nb, (unsigned long)CPU_UP_PREPARE,			\
-		(void *)(unsigned long)cpu);				\
-	local_irq_save(flags);						\
-	fn(&fn##_nb, (unsigned long)CPU_STARTING,			\
-		(void *)(unsigned long)cpu);				\
-	local_irq_restore(flags);					\
-	fn(&fn##_nb, (unsigned long)CPU_ONLINE,				\
-		(void *)(unsigned long)cpu);				\
-	__register_cpu_notifier(&fn##_nb);				\
-	cpu_notifier_register_done();					\
-} while (0)
-
-/*
- * Bare-bones version of perf_cpu_notifier(), which doesn't invoke the
- * callback for already online CPUs.
- */
-#define __perf_cpu_notifier(fn)						\
-do {									\
-	static struct notifier_block fn##_nb =				\
-		{ .notifier_call = fn, .priority = CPU_PRI_PERF };	\
-									\
-	__register_cpu_notifier(&fn##_nb);				\
-} while (0)
-
 struct perf_pmu_events_attr {
 	struct device_attribute attr;
 	u64 id;