Thread (14 messages) flat view 14 messages, 3 authors, 2021-12-22

Re: [PATCH 4/8] sched: powerpc: Remove unused TASK_SIZE_OF

From: Guo Ren <guoren@kernel.org>
Date: 2021-12-22 03:02:50
Also in: linux-mips, linux-riscv, linux-s390, linuxppc-dev, lkml

On Wed, Dec 22, 2021 at 2:43 AM Christophe Leroy
[off-list ref] wrote:


Le 21/12/2021 à 18:00, guoren@kernel.org a écrit :
quoted
From: Guo Ren <redacted>

This macro isn't used in Linux sched, now. Delete in
include/linux/sched.h and arch's include/asm.

Signed-off-by: Guo Ren <redacted>
---
  arch/powerpc/include/asm/task_size_64.h | 6 ++----
  1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm/task_size_64.h b/arch/powerpc/include/asm/task_size_64.h
index c993482237ed..7e2eca4fac4d 100644
--- a/arch/powerpc/include/asm/task_size_64.h
+++ b/arch/powerpc/include/asm/task_size_64.h
@@ -44,12 +44,10 @@
   */
  #define TASK_SIZE_USER32 (0x0000000100000000UL - (1 * PAGE_SIZE))

-#define TASK_SIZE_OF(tsk)                                            \
-     (test_tsk_thread_flag(tsk, TIF_32BIT) ? TASK_SIZE_USER32 :      \
+#define TASK_SIZE                                                    \
+     (test_tsk_thread_flag(current, TIF_32BIT) ? TASK_SIZE_USER32 :  \
                                              TASK_SIZE_USER64)
I think you should use test_thread_flag() instead.

Or even better: use is_32bit_task() and bring back this macro as a
single line, something like:

#define TASK_SIZE (is_32bit_task() ? TASK_SIZE_USER32 : TASK_SIZE_USER64)
Okay, looks better. I would fix it in the next version.
quoted
-#define TASK_SIZE TASK_SIZE_OF(current)
-
  #define TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4))
  #define TASK_UNMAPPED_BASE_USER64 (PAGE_ALIGN(DEFAULT_MAP_WINDOW_USER64 / 4))


-- 
Best Regards
 Guo Ren

ML: https://lore.kernel.org/linux-csky/

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