Re: [PATCH] lockdep: Do not record irq state in debug_check_no_locks_freed()
On Wed, 4 Apr 2018 18:23:05 +0200 Peter Zijlstrawrote: > > Makes sense, could you convert all of them just to make sure there > aren't any left? There's a few others. I'll send another patch. -- Steve
Re: [PATCH] lockdep: Do not record irq state in debug_check_no_locks_freed()
On Wed, 4 Apr 2018 18:23:05 +0200 Peter Zijlstra wrote: > > Makes sense, could you convert all of them just to make sure there > aren't any left? There's a few others. I'll send another patch. -- Steve
Re: [PATCH] lockdep: Do not record irq state in debug_check_no_locks_freed()
On Wed, Apr 04, 2018 at 12:19:04PM -0400, Steven Rostedt wrote: > From: Steven Rostedt (VMware)> > While debugging where things were going wrong with mapping > enabling/disabling interrupts with the lockdep state and actual real > enabling and disabling interrupts, I had to silent the irq > disabling/enabling in debug_check_no_locks_freed() because it was > always showing up as it was called before the splat was. > > Use raw_local_irq_save/restore() for debug_check_no_locks_freed() as it > hides useful information about where interrupts were used incorrectly > last. > > Signed-off-by: Steven Rostedt (VMware) > --- > diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c > index 89b5f83f1969..8c145dc1315b 100644 > --- a/kernel/locking/lockdep.c > +++ b/kernel/locking/lockdep.c > @@ -4407,7 +4407,7 @@ void debug_check_no_locks_freed(const void *mem_from, > unsigned long mem_len) > if (unlikely(!debug_locks)) > return; > > - local_irq_save(flags); > + raw_local_irq_save(flags); > for (i = 0; i < curr->lockdep_depth; i++) { > hlock = curr->held_locks + i; > > @@ -4418,7 +4418,7 @@ void debug_check_no_locks_freed(const void *mem_from, > unsigned long mem_len) > print_freed_lock_bug(curr, mem_from, mem_from + mem_len, hlock); > break; > } > - local_irq_restore(flags); > + raw_local_irq_restore(flags); > } > EXPORT_SYMBOL_GPL(debug_check_no_locks_freed); Makes sense, could you convert all of them just to make sure there aren't any left?
Re: [PATCH] lockdep: Do not record irq state in debug_check_no_locks_freed()
On Wed, Apr 04, 2018 at 12:19:04PM -0400, Steven Rostedt wrote: > From: Steven Rostedt (VMware) > > While debugging where things were going wrong with mapping > enabling/disabling interrupts with the lockdep state and actual real > enabling and disabling interrupts, I had to silent the irq > disabling/enabling in debug_check_no_locks_freed() because it was > always showing up as it was called before the splat was. > > Use raw_local_irq_save/restore() for debug_check_no_locks_freed() as it > hides useful information about where interrupts were used incorrectly > last. > > Signed-off-by: Steven Rostedt (VMware) > --- > diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c > index 89b5f83f1969..8c145dc1315b 100644 > --- a/kernel/locking/lockdep.c > +++ b/kernel/locking/lockdep.c > @@ -4407,7 +4407,7 @@ void debug_check_no_locks_freed(const void *mem_from, > unsigned long mem_len) > if (unlikely(!debug_locks)) > return; > > - local_irq_save(flags); > + raw_local_irq_save(flags); > for (i = 0; i < curr->lockdep_depth; i++) { > hlock = curr->held_locks + i; > > @@ -4418,7 +4418,7 @@ void debug_check_no_locks_freed(const void *mem_from, > unsigned long mem_len) > print_freed_lock_bug(curr, mem_from, mem_from + mem_len, hlock); > break; > } > - local_irq_restore(flags); > + raw_local_irq_restore(flags); > } > EXPORT_SYMBOL_GPL(debug_check_no_locks_freed); Makes sense, could you convert all of them just to make sure there aren't any left?
[PATCH] lockdep: Do not record irq state in debug_check_no_locks_freed()
From: Steven Rostedt (VMware)While debugging where things were going wrong with mapping enabling/disabling interrupts with the lockdep state and actual real enabling and disabling interrupts, I had to silent the irq disabling/enabling in debug_check_no_locks_freed() because it was always showing up as it was called before the splat was. Use raw_local_irq_save/restore() for debug_check_no_locks_freed() as it hides useful information about where interrupts were used incorrectly last. Signed-off-by: Steven Rostedt (VMware) --- diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 89b5f83f1969..8c145dc1315b 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4407,7 +4407,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len) if (unlikely(!debug_locks)) return; - local_irq_save(flags); + raw_local_irq_save(flags); for (i = 0; i < curr->lockdep_depth; i++) { hlock = curr->held_locks + i; @@ -4418,7 +4418,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len) print_freed_lock_bug(curr, mem_from, mem_from + mem_len, hlock); break; } - local_irq_restore(flags); + raw_local_irq_restore(flags); } EXPORT_SYMBOL_GPL(debug_check_no_locks_freed);
[PATCH] lockdep: Do not record irq state in debug_check_no_locks_freed()
From: Steven Rostedt (VMware) While debugging where things were going wrong with mapping enabling/disabling interrupts with the lockdep state and actual real enabling and disabling interrupts, I had to silent the irq disabling/enabling in debug_check_no_locks_freed() because it was always showing up as it was called before the splat was. Use raw_local_irq_save/restore() for debug_check_no_locks_freed() as it hides useful information about where interrupts were used incorrectly last. Signed-off-by: Steven Rostedt (VMware) --- diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 89b5f83f1969..8c145dc1315b 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4407,7 +4407,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len) if (unlikely(!debug_locks)) return; - local_irq_save(flags); + raw_local_irq_save(flags); for (i = 0; i < curr->lockdep_depth; i++) { hlock = curr->held_locks + i; @@ -4418,7 +4418,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len) print_freed_lock_bug(curr, mem_from, mem_from + mem_len, hlock); break; } - local_irq_restore(flags); + raw_local_irq_restore(flags); } EXPORT_SYMBOL_GPL(debug_check_no_locks_freed);