From: Michael Ellerman <mpe@ellerman.id.au>
To: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc: Only define _TASK_CPU for 32-bit
Date: Sun, 18 Apr 2021 23:16:41 +1000 [thread overview]
Message-ID: <20210418131641.1186227-1-mpe@ellerman.id.au> (raw)
We have some interesting code in our Makefile to define _TASK_CPU, based
on awk'ing the value out of asm-offsets.h. It exists to circumvent some
circular header dependencies that prevent us from referring to
task_struct in the relevant code. See the comment around _TASK_CPU in
smp.h for more detail.
Maybe one day we can come up with a better solution, but for now we can
at least limit that logic to 32-bit, because it's not needed for 64-bit.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/Makefile | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 32dd693b4e42..3212d076ac6a 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -438,12 +438,15 @@ endif
endif
ifdef CONFIG_SMP
+ifdef CONFIG_PPC32
prepare: task_cpu_prepare
PHONY += task_cpu_prepare
task_cpu_prepare: prepare0
$(eval KBUILD_CFLAGS += -D_TASK_CPU=$(shell awk '{if ($$2 == "TASK_CPU") print $$3;}' include/generated/asm-offsets.h))
-endif
+
+endif # CONFIG_PPC32
+endif # CONFIG_SMP
PHONY += checkbin
# Check toolchain versions:
--
2.25.1
next reply other threads:[~2021-04-18 13:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-18 13:16 Michael Ellerman [this message]
2021-04-21 13:08 ` [PATCH] powerpc: Only define _TASK_CPU for 32-bit Michael Ellerman
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