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| author |   Hridya Valsaraju <hridya@google.com> | 2019-09-03 09:16:54 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-04 13:31:22 +0200 |
| commit | 03e2e07e38147917482d595ad3cf193212ded8ac (patch) | |
| tree | 8b63ad2be74bdf9c9935ee130570bbc0e339af8b /drivers/android/binder.c | |
| parent | binder: Add stats, state and transactions files (diff) | |
| download | linux-dev-03e2e07e38147917482d595ad3cf193212ded8ac.tar.xz linux-dev-03e2e07e38147917482d595ad3cf193212ded8ac.zip | |
binder: Make transaction_log available in binderfs
Currently, the binder transaction log files 'transaction_log'
and 'failed_transaction_log' live in debugfs at the following locations:
/sys/kernel/debug/binder/failed_transaction_log
/sys/kernel/debug/binder/transaction_log
This patch makes these files also available in a binderfs instance
mounted with the mount option "stats=global".
It does not affect the presence of these files in debugfs.
If a binderfs instance is mounted at path /dev/binderfs, the location of
these files will be as follows:
/dev/binderfs/binder_logs/failed_transaction_log
/dev/binderfs/binder_logs/transaction_log
This change provides an alternate option to access these files when
debugfs is not mounted.
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Hridya Valsaraju <hridya@google.com>
Link: https://lore.kernel.org/r/20190903161655.107408-4-hridya@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android/binder.c')
| -rw-r--r-- | drivers/android/binder.c | 34 |
1 files changed, 5 insertions, 29 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 4b4ab5790678..fe44236de2bd 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -196,30 +196,8 @@ static inline void binder_stats_created(enum binder_stat_types type) atomic_inc(&binder_stats.obj_created[type]); } -struct binder_transaction_log_entry { - int debug_id; - int debug_id_done; - int call_type; - int from_proc; - int from_thread; - int target_handle; - int to_proc; - int to_thread; - int to_node; - int data_size; - int offsets_size; - int return_error_line; - uint32_t return_error; - uint32_t return_error_param; - const char *context_name; -}; -struct binder_transaction_log { - atomic_t cur; - bool full; - struct binder_transaction_log_entry entry[32]; -}; -static struct binder_transaction_log binder_transaction_log; -static struct binder_transaction_log binder_transaction_log_failed; +struct binder_transaction_log binder_transaction_log; +struct binder_transaction_log binder_transaction_log_failed; static struct binder_transaction_log_entry *binder_transaction_log_add( struct binder_transaction_log *log) @@ -6018,7 +5996,7 @@ static void print_binder_transaction_log_entry(struct seq_file *m, "\n" : " (incomplete)\n"); } -static int transaction_log_show(struct seq_file *m, void *unused) +int binder_transaction_log_show(struct seq_file *m, void *unused) { struct binder_transaction_log *log = m->private; unsigned int log_cur = atomic_read(&log->cur); @@ -6050,8 +6028,6 @@ const struct file_operations binder_fops = { .release = binder_release, }; -DEFINE_SHOW_ATTRIBUTE(transaction_log); - static int __init init_binder_device(const char *name) { int ret; @@ -6120,12 +6096,12 @@ static int __init binder_init(void) 0444, binder_debugfs_dir_entry_root, &binder_transaction_log, - &transaction_log_fops); + &binder_transaction_log_fops); debugfs_create_file("failed_transaction_log", 0444, binder_debugfs_dir_entry_root, &binder_transaction_log_failed, - &transaction_log_fops); + &binder_transaction_log_fops); } if (!IS_ENABLED(CONFIG_ANDROID_BINDERFS) && |