Commit 80093619 authored by Chuang Zhang's avatar Chuang Zhang Committed by Greg Kroah-Hartman
Browse files

Binder: Add timestamp to transaction record 



This patch adds a timestamp field to the binder_transaction
structure to track the time consumed during transmission
when reading binder_transaction records.

Signed-off-by: default avatarChuang Zhang <zhangchuang3@xiaomi.com>
Acked-by: default avatarCarlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/5ac8c0d09392290be789423f0dd78a520b830fab.1682333709.git.zhangchuang3@xiaomi.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ac9a7868

drivers/android/binder.c

+7 −2
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ 
#include <linux/syscalls.h>

#include <linux/task_work.h>

#include <linux/sizes.h>

#include <linux/ktime.h>



#include <uapi/linux/android/binder.h>
@@ -2904,6 +2905,7 @@ static void binder_transaction(struct binder_proc *proc, 
	binder_size_t last_fixup_min_off = 0;

	struct binder_context *context = proc->context;

	int t_debug_id = atomic_inc_return(&binder_last_id);

	ktime_t t_start_time = ktime_get();

	char *secctx = NULL;

	u32 secctx_sz = 0;

	struct list_head sgc_head;
@@ -3145,6 +3147,7 @@ static void binder_transaction(struct binder_proc *proc, 
	binder_stats_created(BINDER_STAT_TRANSACTION_COMPLETE);



	t->debug_id = t_debug_id;

	t->start_time = t_start_time;



	if (reply)

		binder_debug(BINDER_DEBUG_TRANSACTION,
@@ -5930,17 +5933,19 @@ static void print_binder_transaction_ilocked(struct seq_file *m, 
{

	struct binder_proc *to_proc;

	struct binder_buffer *buffer = t->buffer;

	ktime_t current_time = ktime_get();



	spin_lock(&t->lock);

	to_proc = t->to_proc;

	seq_printf(m,

		   "%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %ld r%d",

		   "%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %ld r%d elapsed %lldms",

		   prefix, t->debug_id, t,

		   t->from ? t->from->proc->pid : 0,

		   t->from ? t->from->pid : 0,

		   to_proc ? to_proc->pid : 0,

		   t->to_thread ? t->to_thread->pid : 0,

		   t->code, t->flags, t->priority, t->need_reply);

		   t->code, t->flags, t->priority, t->need_reply,

		   ktime_ms_delta(current_time, t->start_time));

	spin_unlock(&t->lock);



	if (proc != to_proc) {

drivers/android/binder_internal.h

+1 −0
Original line number Diff line number Diff line
@@ -528,6 +528,7 @@ struct binder_transaction { 
	long    priority;

	long    saved_priority;

	kuid_t  sender_euid;

	ktime_t start_time;

	struct list_head fd_fixups;

	binder_uintptr_t security_ctx;

	/**