netdev - [PATCH] tools/runqslower: Change state to _

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Date:   Tue,  6 Jul 2021 22:40:05 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH] tools/runqslower: Change state to __state

The task_struct state got renamed to __state, causing
compile fail:

  runqslower.bpf.c:77:12: error: no member named 'state' in 'struct task_struct'
        if (prev->state == TASK_RUNNING)

As this is tracing prog, I think we don't need to use
READ_ONCE to access __state.

Fixes: 2f064a59a11f ("sched: Change task_struct::state")
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/bpf/runqslower/runqslower.bpf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/runqslower/runqslower.bpf.c b/tools/bpf/runqslower/runqslower.bpf.c
index 645530ca7e98..ab9353f2fd46 100644
--- a/tools/bpf/runqslower/runqslower.bpf.c
+++ b/tools/bpf/runqslower/runqslower.bpf.c
@@ -74,7 +74,7 @@ int handle__sched_switch(u64 *ctx)
 	u32 pid;
 
 	/* ivcsw: treat like an enqueue event and store timestamp */
-	if (prev->state == TASK_RUNNING)
+	if (prev->__state == TASK_RUNNING)
 		trace_enqueue(prev);
 
 	pid = next->pid;
-- 
2.31.1