iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

binder: Deal with contexts in debugfs

Browse Source 
Properly print the context in debugfs entries.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Martijn Coenen <maco@google.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Amit Pundir <amit.pundir@linaro.org>
Cc: Serban Constantinescu <serban.constantinescu@arm.com>
Cc: Dmitry Shmidt <dimitrysh@google.com>
Cc: Rom Lemarchand <romlem@google.com>
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Martijn Coenen <maco@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martijn Coenen 2017-02-03 14:40:47 -08:00 committed by Greg Kroah-Hartman
parent 342e5c90b6
commit 14db31814a
1 changed files with 23 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/android/binder.c
View File

@ -189,6 +189,7 @@ struct binder_transaction_log_entry {
int to_node;
int data_size;
int offsets_size;
const char *context_name;
};
struct binder_transaction_log {
int next;
@ -216,10 +217,12 @@ static struct binder_transaction_log_entry *binder_transaction_log_add(
struct binder_context {
struct binder_node *binder_context_mgr_node;
kuid_t binder_context_mgr_uid;
const char *name;
};
static struct binder_context global_context = {
.binder_context_mgr_uid = INVALID_UID,
.name = "binder",
};
struct binder_work {
@ -1407,6 +1410,7 @@ static void binder_transaction(struct binder_proc *proc,
e->target_handle = tr->target.handle;
e->data_size = tr->data_size;
e->offsets_size = tr->offsets_size;
e->context_name = proc->context->name;
if (reply) {
in_reply_to = thread->transaction_stack;
@ -3072,8 +3076,17 @@ static int binder_open(struct inode *nodp, struct file *filp)
char strbuf[11];
snprintf(strbuf, sizeof(strbuf), "%u", proc->pid);
/*
* proc debug entries are shared between contexts, so
* this will fail if the process tries to open the driver
* again with a different context. The priting code will
* anyway print all contexts that a given PID has, so this
* is not a problem.
*/
proc->debugfs_entry = debugfs_create_file(strbuf, S_IRUGO,
binder_debugfs_dir_entry_proc, proc, &binder_proc_fops);
binder_debugfs_dir_entry_proc,
(void *)(unsigned long)proc->pid,
&binder_proc_fops);
}
return 0;
@ -3468,6 +3481,7 @@ static void print_binder_proc(struct seq_file *m,
size_t header_pos;
seq_printf(m, "proc %d\n", proc->pid);
seq_printf(m, "context %s\n", proc->context->name);
header_pos = m->count;
for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n))
@ -3592,6 +3606,7 @@ static void print_binder_proc_stats(struct seq_file *m,
int count, strong, weak;
seq_printf(m, "proc %d\n", proc->pid);
seq_printf(m, "context %s\n", proc->context->name);
count = 0;
for (n = rb_first(&proc->threads); n != NULL; n = rb_next(n))
count++;
@ -3699,23 +3714,18 @@ static int binder_transactions_show(struct seq_file *m, void *unused)
static int binder_proc_show(struct seq_file *m, void *unused)
{
struct binder_proc *itr;
struct binder_proc *proc = m->private;
int pid = (unsigned long)m->private;
int do_lock = !binder_debug_no_lock;
bool valid_proc = false;
if (do_lock)
binder_lock(__func__);
hlist_for_each_entry(itr, &binder_procs, proc_node) {
if (itr == proc) {
valid_proc = true;
break;
if (itr->pid == pid) {
seq_puts(m, "binder proc state:\n");
print_binder_proc(m, itr, 1);
}
}
if (valid_proc) {
seq_puts(m, "binder proc state:\n");
print_binder_proc(m, proc, 1);
}
if (do_lock)
binder_unlock(__func__);
return 0;
@ -3725,11 +3735,11 @@ static void print_binder_transaction_log_entry(struct seq_file *m,
struct binder_transaction_log_entry *e)
{
seq_printf(m,
"%d: %s from %d:%d to %d:%d node %d handle %d size %d:%d\n",
"%d: %s from %d:%d to %d:%d context %s node %d handle %d size %d:%d\n",
e->debug_id, (e->call_type == 2) ? "reply" :
((e->call_type == 1) ? "async" : "call "), e->from_proc,
e->from_thread, e->to_proc, e->to_thread, e->to_node,
e->target_handle, e->data_size, e->offsets_size);
e->from_thread, e->to_proc, e->to_thread, e->context_name,
e->to_node, e->target_handle, e->data_size, e->offsets_size);
}
static int binder_transaction_log_show(struct seq_file *m, void *unused)