From: yaozhenguo <yaozhenguo1@gmail.com>
To: mingo@redhat.com, peterz@infradead.org, vincent.guittot@linaro.org
Cc: linux-kernel@vger.kernel.org, yaozhenguo@jd.com,
ZhenguoYao <yaozhenguo1@gmail.com>
Subject: [PATCH] sched: change MAX_SHARES to NR_CPUS
Date: Tue, 12 Aug 2025 17:28:10 +0800 [thread overview]
Message-ID: <20250812092810.38728-1-yaozhenguo@jd.com> (raw)
From: ZhenguoYao <yaozhenguo1@gmail.com>
As the number of cores in modern CPUs continues to increase,
256 * 1024 is no longer sufficient to meet the requirements.
Therefore, MAX_SHARES is being modified to NR_CPUS * 1024.
Signed-off-by: ZhenguoYao <yaozhenguo1@gmail.com>
---
kernel/sched/sched.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index be9745d104f7..5c219e34f48d 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -510,7 +510,7 @@ struct task_group {
* limitation from this.)
*/
#define MIN_SHARES (1UL << 1)
-#define MAX_SHARES (1UL << 18)
+#define MAX_SHARES (NR_CPUS * 1024UL)
#endif
typedef int (*tg_visitor)(struct task_group *, void *);
--
2.43.5
next reply other threads:[~2025-08-12 9:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-12 9:28 yaozhenguo [this message]
2025-08-12 10:00 ` Peter Zijlstra
2025-08-12 12:04 ` Zhenguo Yao
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