linux-kernel - [PATCH V2 1/8] sched: Remove unused TASK_SIZE

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Date:   Sat, 25 Dec 2021 12:54:23 +0800
From:   guoren@...nel.org
To:     guoren@...nel.org, will@...nel.org, tglx@...utronix.de,
        benh@...nel.crashing.org, arnd@...db.de, mingo@...hat.com,
        peterz@...radead.org, juri.lelli@...hat.com,
        christophe.leroy@...roup.eu
Cc:     linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, sparclinux@...r.kernel.or,
        linuxppc-dev@...ts.ozlabs.org, inux-parisc@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        x86@...nel.org, Guo Ren <guoren@...ux.alibaba.com>
Subject: [PATCH V2 1/8] sched: Remove unused TASK_SIZE_OF

From: Guo Ren <guoren@...ux.alibaba.com>

This macro isn't used in Linux, now. Delete in include/linux/sched.h
and arch's include/asm. This would confuse people who are
implementing the COMPAT feature for architecture.

Here is the comment by Arnd:
Looking through the git history, I see commit a06db751c321 ("pagemap:
check permissions and capabilities at open time") removing the last
user.

Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
Reviewed-by: Arnd Bergmann <arnd@...db.de>
---
 include/linux/sched.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 78c351e35fec..8e5689d06ac8 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2166,10 +2166,6 @@ static inline bool vcpu_is_preempted(int cpu)
 extern long sched_setaffinity(pid_t pid, const struct cpumask *new_mask);
 extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
 
-#ifndef TASK_SIZE_OF
-#define TASK_SIZE_OF(tsk)	TASK_SIZE
-#endif
-
 #ifdef CONFIG_SMP
 /* Returns effective CPU energy utilization, as seen by the scheduler */
 unsigned long sched_cpu_util(int cpu, unsigned long max);
-- 
2.25.1