Messages in this thread Patch in this message | | | From | Todd Kjos <> | Subject | [PATCH 08/37] binder: remove binder_debug_no_lock mechanism | Date | Thu, 29 Jun 2017 12:01:42 -0700 |
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With the global lock, there was a mechanism to access binder driver debugging information with the global lock disabled to debug deadlocks or other issues. This mechanism is rarely (if ever) used anymore and wasn't needed during the development of fine-grained locking in the binder driver. Removing it.
Signed-off-by: Todd Kjos <tkjos@google.com> --- drivers/android/binder.c | 31 ++++++++----------------------- 1 file changed, 8 insertions(+), 23 deletions(-)
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 0512971cfc53..10fda7ab9fa5 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -107,9 +107,6 @@ static uint32_t binder_debug_mask = BINDER_DEBUG_USER_ERROR | BINDER_DEBUG_FAILED_TRANSACTION | BINDER_DEBUG_DEAD_TRANSACTION; module_param_named(debug_mask, binder_debug_mask, uint, S_IWUSR | S_IRUGO); -static bool binder_debug_no_lock; -module_param_named(proc_no_lock, binder_debug_no_lock, bool, S_IWUSR | S_IRUGO); - static char *binder_devices_param = CONFIG_ANDROID_BINDER_DEVICES; module_param_named(devices, binder_devices_param, charp, 0444); @@ -3507,10 +3504,8 @@ static int binder_state_show(struct seq_file *m, void *unused) { struct binder_proc *proc; struct binder_node *node; - int do_lock = !binder_debug_no_lock; - if (do_lock) - binder_lock(__func__); + binder_lock(__func__); seq_puts(m, "binder state:\n"); @@ -3521,18 +3516,15 @@ static int binder_state_show(struct seq_file *m, void *unused) hlist_for_each_entry(proc, &binder_procs, proc_node) print_binder_proc(m, proc, 1); - if (do_lock) - binder_unlock(__func__); + binder_unlock(__func__); return 0; } static int binder_stats_show(struct seq_file *m, void *unused) { struct binder_proc *proc; - int do_lock = !binder_debug_no_lock; - if (do_lock) - binder_lock(__func__); + binder_lock(__func__); seq_puts(m, "binder stats:\n"); @@ -3540,24 +3532,20 @@ static int binder_stats_show(struct seq_file *m, void *unused) hlist_for_each_entry(proc, &binder_procs, proc_node) print_binder_proc_stats(m, proc); - if (do_lock) - binder_unlock(__func__); + binder_unlock(__func__); return 0; } static int binder_transactions_show(struct seq_file *m, void *unused) { struct binder_proc *proc; - int do_lock = !binder_debug_no_lock; - if (do_lock) - binder_lock(__func__); + binder_lock(__func__); seq_puts(m, "binder transactions:\n"); hlist_for_each_entry(proc, &binder_procs, proc_node) print_binder_proc(m, proc, 0); - if (do_lock) - binder_unlock(__func__); + binder_unlock(__func__); return 0; } @@ -3565,10 +3553,8 @@ static int binder_proc_show(struct seq_file *m, void *unused) { struct binder_proc *itr; int pid = (unsigned long)m->private; - int do_lock = !binder_debug_no_lock; - if (do_lock) - binder_lock(__func__); + binder_lock(__func__); hlist_for_each_entry(itr, &binder_procs, proc_node) { if (itr->pid == pid) { @@ -3576,8 +3562,7 @@ static int binder_proc_show(struct seq_file *m, void *unused) print_binder_proc(m, itr, 1); } } - if (do_lock) - binder_unlock(__func__); + binder_unlock(__func__); return 0; } -- 2.13.2.725.g09c95d1e9-goog
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