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[0/4] riscv: alternative-macros.h cleanups

Message ID 20221125113959.35328-1-ajones@ventanamicro.com (mailing list archive)
State Not Applicable
Headers show

Commit Message

Andrew Jones Nov. 25, 2022, 11:39 a.m. UTC 
This series is a collection of cleanups for alternative-macros.h with
the main motivation being that adding new ALTERNATIVE_3, ALTERNATIVE_4,
... will be possible without lots of bloat. For example, adding
ALTERNATIVE_3 should look something like the diff below and
ALTERNATIVE_4 the same. This has really only been compile tested, as
not all alternatives are used when quickly booting over QEMU, which
I also did.

Thanks,
drew



Andrew Jones (4):
  riscv: Don't duplicate __ALTERNATIVE_CFG in __ALTERNATIVE_CFG_2
  riscv: alternatives: Don't name unused macro parameters
  riscv: alternatives: Drop the underscores from the assembly macro
    names
  riscv: Don't duplicate _ALTERNATIVE_CFG* macros

 arch/riscv/include/asm/alternative-macros.h | 99 +++++++--------------
 1 file changed, 30 insertions(+), 69 deletions(-)

Comments

Conor Dooley Nov. 26, 2022, 5:13 p.m. UTC | #1 
On Fri, Nov 25, 2022 at 12:39:55PM +0100, Andrew Jones wrote:
> This series is a collection of cleanups for alternative-macros.h with
> the main motivation being that adding new ALTERNATIVE_3, ALTERNATIVE_4,
> ... will be possible without lots of bloat. For example, adding
> ALTERNATIVE_3 should look something like the diff below and
> ALTERNATIVE_4 the same. This has really only been compile tested, as
> not all alternatives are used when quickly booting over QEMU, which
> I also did.

I gave it a go on my D1 (with the macro args fixed) and it seems to work
as expected. I'm not comfortable enough with this stuff to actually give
you a tag though, sorry :/
diff mbox

Patch

diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index a6c4f8ed41d3..0f92ec1a28e7 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -50,8 +50,17 @@ 
 	ALT_NEW_CONTENT \vendor_id_2, \errata_id_2, \enable_2, \new_c_2
 .endm
 
+.macro ALTERNATIVE_CFG_3 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1,	\
+				new_c_2, vendor_id_2, errata_id_2, enable_2,	\
+				new_c_3, vendor_id_3, errata_id_3, enable_3
+	ALTERNATIVE_CFG_2 old_c, new_c_1, vendor_id_1, errata_id_1, enable_1,	\
+				 new_c_2, vendor_id_2, errata_id_2, enable_2
+	ALT_NEW_CONTENT \vendor_id_3, \errata_id_3, \enable_3, \new_c_3
+.endm
+
 #define __ALTERNATIVE_CFG(...)		ALTERNATIVE_CFG __VA_ARGS__
 #define __ALTERNATIVE_CFG_2(...)	ALTERNATIVE_CFG_2 __VA_ARGS__
+#define __ALTERNATIVE_CFG_3(...)	ALTERNATIVE_CFG_3 __VA_ARGS__
 
 #else /* !__ASSEMBLY__ */
 
@@ -98,6 +107,13 @@ 
 	__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1)	\
 	ALT_NEW_CONTENT(vendor_id_2, errata_id_2, enable_2, new_c_2)
 
+#define __ALTERNATIVE_CFG_3(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1,	\
+				   new_c_2, vendor_id_2, errata_id_2, enable_2,	\
+				   new_c_3, vendor_id_3, errata_id_3, enable_3)	\
+	__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, enable_1,	\
+				   new_c_2, vendor_id_2, errata_id_2, enable_2)	\
+	ALT_NEW_CONTENT(vendor_id_3, errata_id_3, enable_3, new_c_3)
+
 #endif /* __ASSEMBLY__ */
 
 #define _ALTERNATIVE_CFG(old_c, new_c, vendor_id, errata_id, CONFIG_k)	\
@@ -108,6 +124,13 @@ 
 	__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, errata_id_1, IS_ENABLED(CONFIG_k_1),	\
 				   new_c_2, vendor_id_2, errata_id_2, IS_ENABLED(CONFIG_k_2))
 
+#define _ALTERNATIVE_CFG_3(old_c, new_c_1, vendor_id_1,	errata_id_1, CONFIG_k_1,		\
+				  new_c_2, vendor_id_2, errata_id_2, CONFIG_k_2,		\
+				  new_c_3, vendor_id_3,	errata_id_3, CONFIG_k_3)		\
+	__ALTERNATIVE_CFG_3(old_c, new_c_1, vendor_id_1, errata_id_1, IS_ENABLED(CONFIG_k_1),	\
+				   new_c_2, vendor_id_2, errata_id_2, IS_ENABLED(CONFIG_k_2),	\
+				   new_c_3, vendor_id_3, errata_id_3, IS_ENABLED(CONFIG_k_3))
+
 #else /* CONFIG_RISCV_ALTERNATIVE */
 #ifdef __ASSEMBLY__
 
@@ -121,6 +144,9 @@ 
 #define _ALTERNATIVE_CFG_2(old_c, ...)	\
 	ALTERNATIVE_CFG old_c
 
+#define _ALTERNATIVE_CFG_3(old_c, ...)	\
+	ALTERNATIVE_CFG old_c
+
 #else /* !__ASSEMBLY__ */
 
 #define __ALTERNATIVE_CFG(old_c)	\
@@ -132,6 +158,9 @@ 
 #define _ALTERNATIVE_CFG_2(old_c, ...)	\
 	__ALTERNATIVE_CFG(old_c)
 
+#define _ALTERNATIVE_CFG_3(old_c, ...)	\
+	__ALTERNATIVE_CFG(old_c)
+
 #endif /* __ASSEMBLY__ */
 #endif /* CONFIG_RISCV_ALTERNATIVE */
 
@@ -163,4 +192,11 @@ 
 	_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1,	\
 					new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2)
 
+#define ALTERNATIVE_3(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1,		\
+				   new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2,		\
+				   new_content_3, vendor_id_3, errata_id_3, CONFIG_k_3)		\
+	_ALTERNATIVE_CFG_3(old_content, new_content_1, vendor_id_1, errata_id_1, CONFIG_k_1,	\
+					new_content_2, vendor_id_2, errata_id_2, CONFIG_k_2,	\
+					new_content_3, vendor_id_3, errata_id_3, CONFIG_k_3)
+
 #endif