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gcc warns about 'static const' variables even in headers when building
with -Wunused-const-variables enabled:
In file included from kernel/locking/lockdep_proc.c:25:
kernel/locking/lockdep_internals.h:69:28: error: 'LOCKF_USED_IN_IRQ_READ' defined but not used [-Werror=unused-const-variable=]
69 | static const unsigned long LOCKF_USED_IN_IRQ_READ =
| ^~~~~~~~~~~~~~~~~~~~~~
kernel/locking/lockdep_internals.h:63:28: error: 'LOCKF_ENABLED_IRQ_READ' defined but not used [-Werror=unused-const-variable=]
63 | static const unsigned long LOCKF_ENABLED_IRQ_READ =
| ^~~~~~~~~~~~~~~~~~~~~~
kernel/locking/lockdep_internals.h:57:28: error: 'LOCKF_USED_IN_IRQ' defined but not used [-Werror=unused-const-variable=]
57 | static const unsigned long LOCKF_USED_IN_IRQ =
| ^~~~~~~~~~~~~~~~~
kernel/locking/lockdep_internals.h:51:28: error: 'LOCKF_ENABLED_IRQ' defined but not used [-Werror=unused-const-variable=]
51 | static const unsigned long LOCKF_ENABLED_IRQ =
| ^~~~~~~~~~~~~~~~~
This one is easy to avoid by changing the generated constant definition
into an equivalent enum.
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20250409122314.2848028-6-arnd@kernel.org
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|---|---|---|
| .. | ||
| irqflag-debug.c | ||
| lock_events.c | ||
| lock_events.h | ||
| lock_events_list.h | ||
| lockdep.c | ||
| lockdep_internals.h | ||
| lockdep_proc.c | ||
| lockdep_states.h | ||
| locktorture.c | ||
| Makefile | ||
| mcs_spinlock.h | ||
| mutex-debug.c | ||
| mutex.c | ||
| mutex.h | ||
| osq_lock.c | ||
| percpu-rwsem.c | ||
| qrwlock.c | ||
| qspinlock.c | ||
| qspinlock.h | ||
| qspinlock_paravirt.h | ||
| qspinlock_stat.h | ||
| rtmutex.c | ||
| rtmutex_api.c | ||
| rtmutex_common.h | ||
| rwbase_rt.c | ||
| rwsem.c | ||
| semaphore.c | ||
| spinlock.c | ||
| spinlock_debug.c | ||
| spinlock_rt.c | ||
| test-ww_mutex.c | ||
| ww_mutex.h | ||
| ww_rt_mutex.c | ||