[PATCH 3/6] lockdep: Remove lockdep_hardirq{s_enabled,_context}() argument

[Peter Zijlstra]

Now that the functions use per-cpu data, we no longer need the macro
argument. Remove it.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 include/linux/irqflags.h       |    8 ++++----
 include/linux/lockdep.h        |    2 +-
 kernel/locking/lockdep.c       |   30 +++++++++++++++---------------
 kernel/softirq.c               |    2 +-
 tools/include/linux/irqflags.h |    4 ++--
 5 files changed, 23 insertions(+), 23 deletions(-)

--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -40,9 +40,9 @@ DECLARE_PER_CPU(int, hardirq_context);
   extern void trace_hardirqs_off_prepare(void);
   extern void trace_hardirqs_on(void);
   extern void trace_hardirqs_off(void);
-# define lockdep_hardirq_context(p)	(this_cpu_read(hardirq_context))
+# define lockdep_hardirq_context()	(this_cpu_read(hardirq_context))
 # define lockdep_softirq_context(p)	((p)->softirq_context)
-# define lockdep_hardirqs_enabled(p)	(this_cpu_read(hardirqs_enabled))
+# define lockdep_hardirqs_enabled()	(this_cpu_read(hardirqs_enabled))
 # define lockdep_softirqs_enabled(p)	((p)->softirqs_enabled)
 # define lockdep_hardirq_enter()			\
 do {							\
@@ -109,9 +109,9 @@ do {						\
 # define trace_hardirqs_off_prepare()		do { } while (0)
 # define trace_hardirqs_on()		do { } while (0)
 # define trace_hardirqs_off()		do { } while (0)
-# define lockdep_hardirq_context(p)	0
+# define lockdep_hardirq_context()	0
 # define lockdep_softirq_context(p)	0
-# define lockdep_hardirqs_enabled(p)	0
+# define lockdep_hardirqs_enabled()	0
 # define lockdep_softirqs_enabled(p)	0
 # define lockdep_hardirq_enter()	do { } while (0)
 # define lockdep_hardirq_threaded()	do { } while (0)
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -736,7 +736,7 @@ do {									\
 
 # define lockdep_assert_RT_in_threaded_ctx() do {			\
 		WARN_ONCE(debug_locks && !current->lockdep_recursion &&	\
-			  lockdep_hardirq_context(current) &&		\
+			  lockdep_hardirq_context() &&			\
 			  !(current->hardirq_threaded || current->irq_config),	\
 			  "Not in threaded context on PREEMPT_RT as expected\n");	\
 } while (0)
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2062,9 +2062,9 @@ print_bad_irq_dependency(struct task_str
 	pr_warn("-----------------------------------------------------\n");
 	pr_warn("%s/%d [HC%u[%lu]:SC%u[%lu]:HE%u:SE%u] is trying to acquire:\n",
 		curr->comm, task_pid_nr(curr),
-		lockdep_hardirq_context(curr), hardirq_count() >> HARDIRQ_SHIFT,
+		lockdep_hardirq_context(), hardirq_count() >> HARDIRQ_SHIFT,
 		curr->softirq_context, softirq_count() >> SOFTIRQ_SHIFT,
-		lockdep_hardirqs_enabled(curr),
+		lockdep_hardirqs_enabled(),
 		curr->softirqs_enabled);
 	print_lock(next);
 
@@ -3331,9 +3331,9 @@ print_usage_bug(struct task_struct *curr
 
 	pr_warn("%s/%d [HC%u[%lu]:SC%u[%lu]:HE%u:SE%u] takes:\n",
 		curr->comm, task_pid_nr(curr),
-		lockdep_hardirq_context(curr), hardirq_count() >> HARDIRQ_SHIFT,
+		lockdep_hardirq_context(), hardirq_count() >> HARDIRQ_SHIFT,
 		lockdep_softirq_context(curr), softirq_count() >> SOFTIRQ_SHIFT,
-		lockdep_hardirqs_enabled(curr),
+		lockdep_hardirqs_enabled(),
 		lockdep_softirqs_enabled(curr));
 	print_lock(this);
 
@@ -3649,7 +3649,7 @@ void lockdep_hardirqs_on_prepare(unsigne
 	if (unlikely(!debug_locks || current->lockdep_recursion))
 		return;
 
-	if (unlikely(lockdep_hardirqs_enabled(current))) {
+	if (unlikely(lockdep_hardirqs_enabled())) {
 		/*
 		 * Neither irq nor preemption are disabled here
 		 * so this is racy by nature but losing one hit
@@ -3677,7 +3677,7 @@ void lockdep_hardirqs_on_prepare(unsigne
 	 * Can't allow enabling interrupts while in an interrupt handler,
 	 * that's general bad form and such. Recursion, limited stack etc..
 	 */
-	if (DEBUG_LOCKS_WARN_ON(lockdep_hardirq_context(current)))
+	if (DEBUG_LOCKS_WARN_ON(lockdep_hardirq_context()))
 		return;
 
 	current->hardirq_chain_key = current->curr_chain_key;
@@ -3695,7 +3695,7 @@ void noinstr lockdep_hardirqs_on(unsigne
 	if (unlikely(!debug_locks || curr->lockdep_recursion))
 		return;
 
-	if (lockdep_hardirqs_enabled(curr)) {
+	if (lockdep_hardirqs_enabled()) {
 		/*
 		 * Neither irq nor preemption are disabled here
 		 * so this is racy by nature but losing one hit
@@ -3745,7 +3745,7 @@ void noinstr lockdep_hardirqs_off(unsign
 	if (DEBUG_LOCKS_WARN_ON(!irqs_disabled()))
 		return;
 
-	if (lockdep_hardirqs_enabled(curr)) {
+	if (lockdep_hardirqs_enabled()) {
 		/*
 		 * We have done an ON -> OFF transition:
 		 */
@@ -3794,7 +3794,7 @@ void lockdep_softirqs_on(unsigned long i
 	 * usage bit for all held locks, if hardirqs are
 	 * enabled too:
 	 */
-	if (lockdep_hardirqs_enabled(curr))
+	if (lockdep_hardirqs_enabled())
 		mark_held_locks(curr, LOCK_ENABLED_SOFTIRQ);
 	lockdep_recursion_finish();
 }
@@ -3843,7 +3843,7 @@ mark_usage(struct task_struct *curr, str
 	 */
 	if (!hlock->trylock) {
 		if (hlock->read) {
-			if (lockdep_hardirq_context(curr))
+			if (lockdep_hardirq_context())
 				if (!mark_lock(curr, hlock,
 						LOCK_USED_IN_HARDIRQ_READ))
 					return 0;
@@ -3852,7 +3852,7 @@ mark_usage(struct task_struct *curr, str
 						LOCK_USED_IN_SOFTIRQ_READ))
 					return 0;
 		} else {
-			if (lockdep_hardirq_context(curr))
+			if (lockdep_hardirq_context())
 				if (!mark_lock(curr, hlock, LOCK_USED_IN_HARDIRQ))
 					return 0;
 			if (curr->softirq_context)
@@ -3890,7 +3890,7 @@ mark_usage(struct task_struct *curr, str
 
 static inline unsigned int task_irq_context(struct task_struct *task)
 {
-	return LOCK_CHAIN_HARDIRQ_CONTEXT * !!lockdep_hardirq_context(task) +
+	return LOCK_CHAIN_HARDIRQ_CONTEXT * !!lockdep_hardirq_context() +
 	       LOCK_CHAIN_SOFTIRQ_CONTEXT * !!task->softirq_context;
 }
 
@@ -3983,7 +3983,7 @@ static inline short task_wait_context(st
 	 * Set appropriate wait type for the context; for IRQs we have to take
 	 * into account force_irqthread as that is implied by PREEMPT_RT.
 	 */
-	if (lockdep_hardirq_context(curr)) {
+	if (lockdep_hardirq_context()) {
 		/*
 		 * Check if force_irqthreads will run us threaded.
 		 */
@@ -4826,11 +4826,11 @@ static void check_flags(unsigned long fl
 		return;
 
 	if (irqs_disabled_flags(flags)) {
-		if (DEBUG_LOCKS_WARN_ON(lockdep_hardirqs_enabled(current))) {
+		if (DEBUG_LOCKS_WARN_ON(lockdep_hardirqs_enabled())) {
 			printk("possible reason: unannotated irqs-off.\n");
 		}
 	} else {
-		if (DEBUG_LOCKS_WARN_ON(!lockdep_hardirqs_enabled(current))) {
+		if (DEBUG_LOCKS_WARN_ON(!lockdep_hardirqs_enabled())) {
 			printk("possible reason: unannotated irqs-on.\n");
 		}
 	}
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -230,7 +230,7 @@ static inline bool lockdep_softirq_start
 {
 	bool in_hardirq = false;
 
-	if (lockdep_hardirq_context(current)) {
+	if (lockdep_hardirq_context()) {
 		in_hardirq = true;
 		lockdep_hardirq_exit();
 	}
--- a/tools/include/linux/irqflags.h
+++ b/tools/include/linux/irqflags.h
@@ -2,9 +2,9 @@
 #ifndef _LIBLOCKDEP_LINUX_TRACE_IRQFLAGS_H_
 #define _LIBLOCKDEP_LINUX_TRACE_IRQFLAGS_H_
 
-# define lockdep_hardirq_context(p)	0
+# define lockdep_hardirq_context()	0
 # define lockdep_softirq_context(p)	0
-# define lockdep_hardirqs_enabled(p)	0
+# define lockdep_hardirqs_enabled()	0
 # define lockdep_softirqs_enabled(p)	0
 # define lockdep_hardirq_enter()	do { } while (0)
 # define lockdep_hardirq_exit()		do { } while (0)