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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


WARNING: multiple messages have this Message-ID (diff)
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


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             reply	other threads:[~2022-02-06 17:51 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-06 17:43 Jisheng Zhang [this message]
2022-02-06 17:43 ` [RFC PATCH] riscv: reduce THREAD_SIZE from 16KB to 8KB for RV64 Jisheng Zhang
2022-02-07  3:35 ` David Laight
2022-02-07  3:35   ` David Laight
2022-02-07  7:35 ` Arnd Bergmann
2022-02-07  7:35   ` Arnd Bergmann
2022-02-07 15:27   ` Jisheng Zhang
2022-02-07 15:27     ` Jisheng Zhang
2022-02-07  8:05 ` David Abdurachmanov
2022-02-07  8:05   ` David Abdurachmanov
2022-02-07  8:38   ` Andreas Schwab
2022-02-07  8:38     ` Andreas Schwab
2022-02-07  9:07     ` Arnd Bergmann
2022-02-07  9:07       ` Arnd Bergmann

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