redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

binder: add trace at free transaction. 

Since the original trace_binder_transaction_received cannot
precisely present the real finished time of transaction, adding a
trace_binder_txn_latency_free at the point of free transaction
may be more close to it.

Signed-off-by: Frankie.Chang <Frankie.Chang@mediatek.com>
Acked-by: Todd Kjos <tkjos@google.com>
Link: https://lore.kernel.org/r/1605063764-12930-3-git-send-email-Frankie.Chang@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
zero-sugar-mainline-defconfig
Frankie.Chang 2020-11-11 11:02:43 +08:00 committed by Greg Kroah-Hartman
parent 421518a274
commit 1987f112f1
2 changed files with 47 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/android/binder.c
View File

@ -1486,6 +1486,20 @@ static void binder_free_txn_fixups(struct binder_transaction *t)
}
}
static void binder_txn_latency_free(struct binder_transaction *t)
{
int from_proc, from_thread, to_proc, to_thread;
spin_lock(&t->lock);
from_proc = t->from ? t->from->proc->pid : 0;
from_thread = t->from ? t->from->pid : 0;
to_proc = t->to_proc ? t->to_proc->pid : 0;
to_thread = t->to_thread ? t->to_thread->pid : 0;
spin_unlock(&t->lock);
trace_binder_txn_latency_free(t, from_proc, from_thread, to_proc, to_thread);
}
static void binder_free_transaction(struct binder_transaction *t)
{
struct binder_proc *target_proc = t->to_proc;
@ -1496,6 +1510,8 @@ static void binder_free_transaction(struct binder_transaction *t)
t->buffer->transaction = NULL;
binder_inner_proc_unlock(target_proc);
}
if (trace_binder_txn_latency_free_enabled())
binder_txn_latency_free(t);
/*
* If the transaction has no target_proc, then
* t->buffer->transaction has already been cleared.
@ -3073,6 +3089,8 @@ err_get_secctx_failed:
kfree(tcomplete);
binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
err_alloc_tcomplete_failed:
if (trace_binder_txn_latency_free_enabled())
binder_txn_latency_free(t);
kfree(t);
binder_stats_deleted(BINDER_STAT_TRANSACTION);
err_alloc_t_failed:

29
drivers/android/binder_trace.h
View File

@ -95,6 +95,35 @@ TRACE_EVENT(binder_wait_for_work,
__entry->thread_todo)
);
TRACE_EVENT(binder_txn_latency_free,
TP_PROTO(struct binder_transaction *t,
int from_proc, int from_thread,
int to_proc, int to_thread),
TP_ARGS(t, from_proc, from_thread, to_proc, to_thread),
TP_STRUCT__entry(
__field(int, debug_id)
__field(int, from_proc)
__field(int, from_thread)
__field(int, to_proc)
__field(int, to_thread)
__field(unsigned int, code)
__field(unsigned int, flags)
),
TP_fast_assign(
__entry->debug_id = t->debug_id;
__entry->from_proc = from_proc;
__entry->from_thread = from_thread;
__entry->to_proc = to_proc;
__entry->to_thread = to_thread;
__entry->code = t->code;
__entry->flags = t->flags;
),
TP_printk("transaction=%d from %d:%d to %d:%d flags=0x%x code=0x%x",
__entry->debug_id, __entry->from_proc, __entry->from_thread,
__entry->to_proc, __entry->to_thread, __entry->code,
__entry->flags)
);
TRACE_EVENT(binder_transaction,
TP_PROTO(bool reply, struct binder_transaction *t,
struct binder_node *target_node),