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03e2e07e38
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>
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_BINDER_INTERNAL_H
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#define _LINUX_BINDER_INTERNAL_H
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#include <linux/export.h>
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#include <linux/fs.h>
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#include <linux/list.h>
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#include <linux/miscdevice.h>
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#include <linux/mutex.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include <linux/uidgid.h>
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struct binder_context {
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struct binder_node *binder_context_mgr_node;
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struct mutex context_mgr_node_lock;
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kuid_t binder_context_mgr_uid;
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const char *name;
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};
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/**
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* struct binder_device - information about a binder device node
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* @hlist: list of binder devices (only used for devices requested via
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* CONFIG_ANDROID_BINDER_DEVICES)
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* @miscdev: information about a binder character device node
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* @context: binder context information
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* @binderfs_inode: This is the inode of the root dentry of the super block
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* belonging to a binderfs mount.
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*/
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struct binder_device {
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struct hlist_node hlist;
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struct miscdevice miscdev;
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struct binder_context context;
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struct inode *binderfs_inode;
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};
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extern const struct file_operations binder_fops;
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extern char *binder_devices_param;
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#ifdef CONFIG_ANDROID_BINDERFS
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extern bool is_binderfs_device(const struct inode *inode);
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#else
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static inline bool is_binderfs_device(const struct inode *inode)
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{
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return false;
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}
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#endif
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#ifdef CONFIG_ANDROID_BINDERFS
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extern int __init init_binderfs(void);
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#else
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static inline int __init init_binderfs(void)
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{
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return 0;
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}
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#endif
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int binder_stats_show(struct seq_file *m, void *unused);
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DEFINE_SHOW_ATTRIBUTE(binder_stats);
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int binder_state_show(struct seq_file *m, void *unused);
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DEFINE_SHOW_ATTRIBUTE(binder_state);
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int binder_transactions_show(struct seq_file *m, void *unused);
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DEFINE_SHOW_ATTRIBUTE(binder_transactions);
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int binder_transaction_log_show(struct seq_file *m, void *unused);
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DEFINE_SHOW_ATTRIBUTE(binder_transaction_log);
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struct binder_transaction_log_entry {
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int debug_id;
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int debug_id_done;
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int call_type;
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int from_proc;
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int from_thread;
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int target_handle;
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int to_proc;
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int to_thread;
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int to_node;
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int data_size;
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int offsets_size;
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int return_error_line;
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uint32_t return_error;
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uint32_t return_error_param;
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const char *context_name;
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};
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struct binder_transaction_log {
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atomic_t cur;
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bool full;
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struct binder_transaction_log_entry entry[32];
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};
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extern struct binder_transaction_log binder_transaction_log;
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extern struct binder_transaction_log binder_transaction_log_failed;
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#endif /* _LINUX_BINDER_INTERNAL_H */
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