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authorChuang Zhang <zhangchuang3@xiaomi.com>2023-04-24 14:05:14 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-05-13 14:38:12 +0300
commit800936191a26a5aba5caa3cbd70a4154b45eb94a (patch)
treee065547bb8761c23e3f733f0572fc442acb4ca28 /drivers/android
parentac9a78681b921877518763ba0e89202254349d1b (diff)
downloadlinux-800936191a26a5aba5caa3cbd70a4154b45eb94a.tar.xz
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: Chuang Zhang <zhangchuang3@xiaomi.com> Acked-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/5ac8c0d09392290be789423f0dd78a520b830fab.1682333709.git.zhangchuang3@xiaomi.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android')
-rw-r--r--drivers/android/binder.c9
-rw-r--r--drivers/android/binder_internal.h1
2 files changed, 8 insertions, 2 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index fb56bfc45096..b6413652906e 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -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) {
diff --git a/drivers/android/binder_internal.h b/drivers/android/binder_internal.h
index 28ef5b3704b1..92e64007f2b0 100644
--- a/drivers/android/binder_internal.h
+++ b/drivers/android/binder_internal.h
@@ -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;
/**