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Commit 604de3b5 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

lockdep: simplify the mark_lock_irq() helpers 



In order to unify them, take some arguments away

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 6a6904d3

kernel/lockdep.c

+44 −16
Original line number Diff line number Diff line
@@ -2001,12 +2001,38 @@ static int reclaim_verbose(struct lock_class *class) 


#define STRICT_READ_CHECKS	1



static const char *state_names[] = {

#define LOCKDEP_STATE(__STATE) \

	STR(__STATE),

#include "lockdep_states.h"

#undef LOCKDEP_STATE

};



static inline const char *state_name(enum lock_usage_bit bit)

{

	return state_names[bit >> 2];

}



static const char *state_rnames[] = {

#define LOCKDEP_STATE(__STATE) \

	STR(__STATE)"-READ",

#include "lockdep_states.h"

#undef LOCKDEP_STATE

};



static inline const char *state_rname(enum lock_usage_bit bit)

{

	return state_rnames[bit >> 2];

}



static int

mark_lock_irq_used_in(struct task_struct *curr, struct held_lock *this,

		      int new_bit, int excl_bit,

		      const char *name, const char *rname,

		      int (*verbose)(struct lock_class *class))

{

	const char *name = state_name(new_bit);

	const char *rname = state_rname(new_bit);



	if (!valid_state(curr, this, new_bit, excl_bit))

		return 0;

	if (!valid_state(curr, this, new_bit, excl_bit + 1))
@@ -2034,9 +2060,11 @@ mark_lock_irq_used_in(struct task_struct *curr, struct held_lock *this, 
static int

mark_lock_irq_used_in_read(struct task_struct *curr, struct held_lock *this,

			   int new_bit, int excl_bit,

			   const char *name, const char *rname,

			   int (*verbose)(struct lock_class *class))

{

	const char *name = state_name(new_bit);

	const char *rname = state_rname(new_bit);



	if (!valid_state(curr, this, new_bit, excl_bit))

		return 0;

	/*
@@ -2054,9 +2082,11 @@ mark_lock_irq_used_in_read(struct task_struct *curr, struct held_lock *this, 
static int

mark_lock_irq_enabled(struct task_struct *curr, struct held_lock *this,

		      int new_bit, int excl_bit,

		      const char *name, const char *rname,

		      int (*verbose)(struct lock_class *class))

{

	const char *name = state_name(new_bit);

	const char *rname = state_rname(new_bit);



	if (!valid_state(curr, this, new_bit, excl_bit))

		return 0;

	if (!valid_state(curr, this, new_bit, excl_bit + 1))
@@ -2085,9 +2115,11 @@ mark_lock_irq_enabled(struct task_struct *curr, struct held_lock *this, 
static int

mark_lock_irq_enabled_read(struct task_struct *curr, struct held_lock *this,

			   int new_bit, int excl_bit,

			   const char *name, const char *rname,

			   int (*verbose)(struct lock_class *class))

{

	const char *name = state_name(new_bit);

	const char *rname = state_rname(new_bit);



	if (!valid_state(curr, this, new_bit, excl_bit))

		return 0;

#if STRICT_READ_CHECKS
@@ -2113,57 +2145,53 @@ static int mark_lock_irq(struct task_struct *curr, struct held_lock *this, 
	case LOCK_USED_IN_HARDIRQ:

		return mark_lock_irq_used_in(curr, this, new_bit,

				LOCK_ENABLED_HARDIRQ,

				"hard", "hard-read", hardirq_verbose);

				hardirq_verbose);

	case LOCK_USED_IN_SOFTIRQ:

		return mark_lock_irq_used_in(curr, this, new_bit,

				LOCK_ENABLED_SOFTIRQ,

				"soft", "soft-read", softirq_verbose);

				softirq_verbose);

	case LOCK_USED_IN_RECLAIM_FS:

		return mark_lock_irq_used_in(curr, this, new_bit,

				LOCK_ENABLED_RECLAIM_FS,

				"reclaim-fs", "reclaim-fs-read",

				reclaim_verbose);



	case LOCK_USED_IN_HARDIRQ_READ:

		return mark_lock_irq_used_in_read(curr, this, new_bit,

				LOCK_ENABLED_HARDIRQ,

				"hard", "hard-read", hardirq_verbose);

				hardirq_verbose);

	case LOCK_USED_IN_SOFTIRQ_READ:

		return mark_lock_irq_used_in_read(curr, this, new_bit,

				LOCK_ENABLED_SOFTIRQ,

				"soft", "soft-read", softirq_verbose);

				softirq_verbose);

	case LOCK_USED_IN_RECLAIM_FS_READ:

		return mark_lock_irq_used_in_read(curr, this, new_bit,

				LOCK_ENABLED_RECLAIM_FS,

				"reclaim-fs", "reclaim-fs-read",

				reclaim_verbose);



	case LOCK_ENABLED_HARDIRQ:

		return mark_lock_irq_enabled(curr, this, new_bit,

				LOCK_USED_IN_HARDIRQ,

				"hard", "hard-read", hardirq_verbose);

				hardirq_verbose);

	case LOCK_ENABLED_SOFTIRQ:

		return mark_lock_irq_enabled(curr, this, new_bit,

				LOCK_USED_IN_SOFTIRQ,

				"soft", "soft-read", softirq_verbose);

				softirq_verbose);

	case LOCK_ENABLED_RECLAIM_FS:

		return mark_lock_irq_enabled(curr, this, new_bit,

				LOCK_USED_IN_RECLAIM_FS,

				"reclaim-fs", "reclaim-fs-read",

				reclaim_verbose);



	case LOCK_ENABLED_HARDIRQ_READ:

		return mark_lock_irq_enabled_read(curr, this, new_bit,

				LOCK_USED_IN_HARDIRQ,

				"hard", "hard-read", hardirq_verbose);

				hardirq_verbose);

	case LOCK_ENABLED_SOFTIRQ_READ:

		return mark_lock_irq_enabled_read(curr, this, new_bit,

				LOCK_USED_IN_SOFTIRQ,

				"soft", "soft-read", softirq_verbose);

				softirq_verbose);

	case LOCK_ENABLED_RECLAIM_FS_READ:

		return mark_lock_irq_enabled_read(curr, this, new_bit,

				LOCK_USED_IN_RECLAIM_FS,

				"reclaim-fs", "reclaim-fs-read",

				reclaim_verbose);



	default: