- switch(new_bit) {
- case LOCK_USED_IN_HARDIRQ:
- if (!valid_state(curr, this, new_bit, LOCK_ENABLED_HARDIRQ))
- return 0;
- if (!valid_state(curr, this, new_bit,
- LOCK_ENABLED_HARDIRQ_READ))
- return 0;
- /*
- * just marked it hardirq-safe, check that this lock
- * took no hardirq-unsafe lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_ENABLED_HARDIRQ, "hard"))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it hardirq-safe, check that this lock
- * took no hardirq-unsafe-read lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_ENABLED_HARDIRQ_READ, "hard-read"))
- return 0;
-#endif
- if (hardirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_USED_IN_SOFTIRQ:
- if (!valid_state(curr, this, new_bit, LOCK_ENABLED_SOFTIRQ))
- return 0;
- if (!valid_state(curr, this, new_bit,
- LOCK_ENABLED_SOFTIRQ_READ))
- return 0;
- /*
- * just marked it softirq-safe, check that this lock
- * took no softirq-unsafe lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_ENABLED_SOFTIRQ, "soft"))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it softirq-safe, check that this lock
- * took no softirq-unsafe-read lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_ENABLED_SOFTIRQ_READ, "soft-read"))
- return 0;
-#endif
- if (softirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_USED_IN_RECLAIM_FS:
- if (!valid_state(curr, this, new_bit, LOCK_HELD_OVER_RECLAIM_FS))
- return 0;
- if (!valid_state(curr, this, new_bit,
- LOCK_HELD_OVER_RECLAIM_FS_READ))
- return 0;
- /*
- * just marked it reclaim-fs-safe, check that this lock
- * took no reclaim-fs-unsafe lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_HELD_OVER_RECLAIM_FS, "reclaim-fs"))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it reclaim-fs-safe, check that this lock
- * took no reclaim-fs-unsafe-read lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_HELD_OVER_RECLAIM_FS_READ, "reclaim-fs-read"))
- return 0;
-#endif
- if (reclaim_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_USED_IN_HARDIRQ_READ:
- if (!valid_state(curr, this, new_bit, LOCK_ENABLED_HARDIRQ))
- return 0;
- /*
- * just marked it hardirq-read-safe, check that this lock
- * took no hardirq-unsafe lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_ENABLED_HARDIRQ, "hard"))
- return 0;
- if (hardirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_USED_IN_SOFTIRQ_READ:
- if (!valid_state(curr, this, new_bit, LOCK_ENABLED_SOFTIRQ))
- return 0;
- /*
- * just marked it softirq-read-safe, check that this lock
- * took no softirq-unsafe lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_ENABLED_SOFTIRQ, "soft"))
- return 0;
- if (softirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_USED_IN_RECLAIM_FS_READ:
- if (!valid_state(curr, this, new_bit, LOCK_HELD_OVER_RECLAIM_FS))
- return 0;
- /*
- * just marked it reclaim-fs-read-safe, check that this lock
- * took no reclaim-fs-unsafe lock in the past:
- */
- if (!check_usage_forwards(curr, this,
- LOCK_HELD_OVER_RECLAIM_FS, "reclaim-fs"))
- return 0;
- if (reclaim_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_ENABLED_HARDIRQ:
- if (!valid_state(curr, this, new_bit, LOCK_USED_IN_HARDIRQ))
- return 0;
- if (!valid_state(curr, this, new_bit,
- LOCK_USED_IN_HARDIRQ_READ))
- return 0;
- /*
- * just marked it hardirq-unsafe, check that no hardirq-safe
- * lock in the system ever took it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_HARDIRQ, "hard"))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it hardirq-unsafe, check that no
- * hardirq-safe-read lock in the system ever took
- * it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_HARDIRQ_READ, "hard-read"))
- return 0;
-#endif
- if (hardirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_ENABLED_SOFTIRQ:
- if (!valid_state(curr, this, new_bit, LOCK_USED_IN_SOFTIRQ))
- return 0;
- if (!valid_state(curr, this, new_bit,
- LOCK_USED_IN_SOFTIRQ_READ))
- return 0;
- /*
- * just marked it softirq-unsafe, check that no softirq-safe
- * lock in the system ever took it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_SOFTIRQ, "soft"))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it softirq-unsafe, check that no
- * softirq-safe-read lock in the system ever took
- * it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_SOFTIRQ_READ, "soft-read"))
- return 0;
-#endif
- if (softirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_HELD_OVER_RECLAIM_FS:
- if (!valid_state(curr, this, new_bit, LOCK_USED_IN_RECLAIM_FS))
- return 0;
- if (!valid_state(curr, this, new_bit,
- LOCK_USED_IN_RECLAIM_FS_READ))
- return 0;
- /*
- * just marked it reclaim-fs-unsafe, check that no reclaim-fs-safe
- * lock in the system ever took it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_RECLAIM_FS, "reclaim-fs"))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it softirq-unsafe, check that no
- * softirq-safe-read lock in the system ever took
- * it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_RECLAIM_FS_READ, "reclaim-fs-read"))
- return 0;
-#endif
- if (reclaim_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_ENABLED_HARDIRQ_READ:
- if (!valid_state(curr, this, new_bit, LOCK_USED_IN_HARDIRQ))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it hardirq-read-unsafe, check that no
- * hardirq-safe lock in the system ever took it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_HARDIRQ, "hard"))
- return 0;
-#endif
- if (hardirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_ENABLED_SOFTIRQ_READ:
- if (!valid_state(curr, this, new_bit, LOCK_USED_IN_SOFTIRQ))
- return 0;
-#if STRICT_READ_CHECKS
- /*
- * just marked it softirq-read-unsafe, check that no
- * softirq-safe lock in the system ever took it in the past:
- */
- if (!check_usage_backwards(curr, this,
- LOCK_USED_IN_SOFTIRQ, "soft"))
- return 0;
-#endif
- if (softirq_verbose(hlock_class(this)))
- ret = 2;
- break;
- case LOCK_HELD_OVER_RECLAIM_FS_READ:
- if (!valid_state(curr, this, new_bit, LOCK_USED_IN_RECLAIM_FS))