lkml.org 
[lkml]   [2021]   [Dec]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[for-next][PATCH 13/13] tracing: Switch to kvfree_rcu() API
From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>

Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

Link: https://lkml.kernel.org/r/20211124110308.2053-10-urezki@gmail.com

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/trace_osnoise.c | 3 +--
kernel/trace/trace_probe.c | 3 +--
2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 7520d43aed55..4719a848bf17 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -138,8 +138,7 @@ static void osnoise_unregister_instance(struct trace_array *tr)
if (!found)
return;

- synchronize_rcu();
- kfree(inst);
+ kvfree_rcu(inst);
}

/*
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 3ed2a3f37297..8a3822818bf8 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -1138,8 +1138,7 @@ int trace_probe_remove_file(struct trace_probe *tp,
return -ENOENT;

list_del_rcu(&link->list);
- synchronize_rcu();
- kfree(link);
+ kvfree_rcu(link);

if (list_empty(&tp->event->files))
trace_probe_clear_flag(tp, TP_FLAG_TRACE);
--
2.33.0
\
 
 \ /
  Last update: 2021-12-07 22:45    [W:0.065 / U:0.688 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site