summaryrefslogtreecommitdiff
path: root/drivers/android
diff options
context:
space:
mode:
authorFrankie.Chang <Frankie.Chang@mediatek.com>2020-11-11 06:02:43 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-11-11 10:20:44 +0300
commit1987f112f1425cba2671d878f6952087e9456a0a (patch)
tree0fd81ef4a68110a7e4fd105d6cf314a66b58c04e /drivers/android
parent421518a2740fc95ab3a47109228bf230dee4040b (diff)
downloadlinux-1987f112f1425cba2671d878f6952087e9456a0a.tar.xz
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>
Diffstat (limited to 'drivers/android')
-rw-r--r--drivers/android/binder.c18
-rw-r--r--drivers/android/binder_trace.h29
2 files changed, 47 insertions, 0 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index abf47734f185..20b08f52e788 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -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:
diff --git a/drivers/android/binder_trace.h b/drivers/android/binder_trace.h
index 6731c3cd8145..8eeccdc64724 100644
--- a/drivers/android/binder_trace.h
+++ b/drivers/android/binder_trace.h
@@ -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),