From: Jisheng Zhang <jszhang@kernel.org>
To: Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH] riscv: reduce THREAD_SIZE from 16KB to 8KB for RV64
Date: Mon, 7 Feb 2022 01:43:59 +0800 [thread overview]
Message-ID: <20220206174359.2986-1-jszhang@kernel.org> (raw)
After irq stack is supported, it's possible to use small THREAD_SIZE.
In fact, I tested this patch on a Lichee RV board, looks good so far.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
arch/riscv/include/asm/thread_info.h | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h
index 67387a8bcb34..fdbf3890a1ab 100644
--- a/arch/riscv/include/asm/thread_info.h
+++ b/arch/riscv/include/asm/thread_info.h
@@ -12,11 +12,7 @@
#include <linux/const.h>
/* thread information allocation */
-#ifdef CONFIG_64BIT
-#define THREAD_SIZE_ORDER (2)
-#else
#define THREAD_SIZE_ORDER (1)
-#endif
#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
#define IRQ_STACK_SIZE THREAD_SIZE
--
2.34.1
next reply other threads:[~2022-02-06 17:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-06 17:43 Jisheng Zhang [this message]
2022-02-07 3:35 ` [RFC PATCH] riscv: reduce THREAD_SIZE from 16KB to 8KB for RV64 David Laight
2022-02-07 7:35 ` Arnd Bergmann
2022-02-07 15:27 ` Jisheng Zhang
2022-02-07 8:05 ` David Abdurachmanov
2022-02-07 8:38 ` Andreas Schwab
2022-02-07 9:07 ` Arnd Bergmann
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