linux-kernel - [PATCH] kcov: add missing #include <linux/sched.h>

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Message-ID: <1481007384-27529-1-git-send-email-wangkefeng.wang@huawei.com>
Date:   Tue, 6 Dec 2016 14:56:24 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <linux-kernel@...r.kernel.org>
CC:     Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Mark Rutland <mark.rutland@....com>,
        James Morse <james.morse@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH] kcov: add missing #include <linux/sched.h>

It is needed by struct task_struct, fixes the following build problem
with old gcc:

../kernel/kcov.c: In function ‘__sanitizer_cov_trace_pc’:
../kernel/kcov.c:66: error: dereferencing pointer to incomplete type
	......
../kernel/kcov.c:239: error: dereferencing pointer to incomplete type

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---

note:
- Build error occurred when I backported kcov to an old kernel version
  with an old gcc

 kernel/kcov.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/kcov.c b/kernel/kcov.c
index 30e6d05..3cbb0c8 100644
--- a/kernel/kcov.c
+++ b/kernel/kcov.c
@@ -7,6 +7,7 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/printk.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/vmalloc.h>
-- 
1.7.12.4