From: Rasmus Villemoes <linux@rasmusvillemoes.dk> To: Andrew Morton <akpm@linux-foundation.org>, linuxppc-dev@lists.ozlabs.org Cc: Jason Baron <jbaron@akamai.com>, linux-kernel@vger.kernel.org, Rasmus Villemoes <linux@rasmusvillemoes.dk>, Michael Ellerman <mpe@ellerman.id.au> Subject: [PATCH 10/10] powerpc: select DYNAMIC_DEBUG_RELATIVE_POINTERS for PPC64 Date: Tue, 9 Apr 2019 23:25:17 +0200 [thread overview] Message-ID: <20190409212517.7321-11-linux@rasmusvillemoes.dk> (raw) In-Reply-To: <20190409212517.7321-1-linux@rasmusvillemoes.dk> Similar to GENERIC_BUG_RELATIVE_POINTERS, one can now relativize the four const char* members of struct _ddebug, thus saving 16 bytes per instance (one for each pr_debug(), dev_debug() etc. in a CONFIG_DYNAMIC_DEBUG kernel). The asm-generic implementation seems to work out-of-the-box, though this is only compile-tested. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> --- arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/Kbuild | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 2d0be82c3061..6821c8ae1d62 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -155,6 +155,7 @@ config PPC select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN + select DYNAMIC_DEBUG_RELATIVE_POINTERS if PPC64 select DYNAMIC_FTRACE if FUNCTION_TRACER select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild index a0c132bedfae..f332e202192a 100644 --- a/arch/powerpc/include/asm/Kbuild +++ b/arch/powerpc/include/asm/Kbuild @@ -3,6 +3,7 @@ generated-y += syscall_table_64.h generated-y += syscall_table_c32.h generated-y += syscall_table_spu.h generic-y += div64.h +generic-y += dynamic_debug.h generic-y += export.h generic-y += irq_regs.h generic-y += local64.h -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Rasmus Villemoes <linux@rasmusvillemoes.dk> To: Andrew Morton <akpm@linux-foundation.org>, linuxppc-dev@lists.ozlabs.org Cc: Jason Baron <jbaron@akamai.com>, Rasmus Villemoes <linux@rasmusvillemoes.dk>, linux-kernel@vger.kernel.org Subject: [PATCH 10/10] powerpc: select DYNAMIC_DEBUG_RELATIVE_POINTERS for PPC64 Date: Tue, 9 Apr 2019 23:25:17 +0200 [thread overview] Message-ID: <20190409212517.7321-11-linux@rasmusvillemoes.dk> (raw) In-Reply-To: <20190409212517.7321-1-linux@rasmusvillemoes.dk> Similar to GENERIC_BUG_RELATIVE_POINTERS, one can now relativize the four const char* members of struct _ddebug, thus saving 16 bytes per instance (one for each pr_debug(), dev_debug() etc. in a CONFIG_DYNAMIC_DEBUG kernel). The asm-generic implementation seems to work out-of-the-box, though this is only compile-tested. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> --- arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/Kbuild | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 2d0be82c3061..6821c8ae1d62 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -155,6 +155,7 @@ config PPC select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN + select DYNAMIC_DEBUG_RELATIVE_POINTERS if PPC64 select DYNAMIC_FTRACE if FUNCTION_TRACER select EDAC_ATOMIC_SCRUB select EDAC_SUPPORT diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild index a0c132bedfae..f332e202192a 100644 --- a/arch/powerpc/include/asm/Kbuild +++ b/arch/powerpc/include/asm/Kbuild @@ -3,6 +3,7 @@ generated-y += syscall_table_64.h generated-y += syscall_table_c32.h generated-y += syscall_table_spu.h generic-y += div64.h +generic-y += dynamic_debug.h generic-y += export.h generic-y += irq_regs.h generic-y += local64.h -- 2.20.1
next prev parent reply other threads:[~2019-04-09 21:26 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-09 21:25 [PATCH 00/10] implement DYNAMIC_DEBUG_RELATIVE_POINTERS Rasmus Villemoes 2019-04-09 21:25 ` Rasmus Villemoes 2019-04-09 21:25 ` Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 01/10] linux/device.h: use unique identifier for each struct _ddebug Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 02/10] linux/net.h: " Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 03/10] linux/printk.h: " Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 04/10] dynamic_debug: introduce accessors for string members of " Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 05/10] dynamic_debug: drop use of bitfields in " Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 06/10] dynamic_debug: introduce CONFIG_DYNAMIC_DEBUG_RELATIVE_POINTERS Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 07/10] dynamic_debug: add asm-generic implementation for DYNAMIC_DEBUG_RELATIVE_POINTERS Rasmus Villemoes 2019-04-09 21:25 ` Rasmus Villemoes 2019-04-09 21:25 ` Rasmus Villemoes 2019-04-09 21:25 ` [PATCH 08/10] x86-64: select DYNAMIC_DEBUG_RELATIVE_POINTERS Rasmus Villemoes 2019-04-10 7:31 ` Ingo Molnar 2019-04-09 21:25 ` [PATCH 09/10] arm64: " Rasmus Villemoes 2019-04-09 21:25 ` Rasmus Villemoes 2019-04-26 9:39 ` Arnd Bergmann 2019-04-26 9:39 ` Arnd Bergmann 2019-04-26 10:05 ` Rasmus Villemoes 2019-04-26 10:05 ` Rasmus Villemoes 2019-04-26 13:00 ` Nathan Chancellor 2019-04-26 13:00 ` Nathan Chancellor 2019-04-26 19:06 ` [PATCH 11/10] arm64: unbreak DYNAMIC_DEBUG=y build with clang Rasmus Villemoes 2019-04-26 19:06 ` Rasmus Villemoes 2019-04-26 19:06 ` [PATCH 12/10] powerpc: " Rasmus Villemoes 2019-04-26 19:06 ` Rasmus Villemoes 2019-04-29 17:34 ` Nick Desaulniers 2019-04-29 17:34 ` Nick Desaulniers 2019-04-26 19:27 ` [PATCH 11/10] arm64: " Rasmus Villemoes 2019-04-26 19:27 ` Rasmus Villemoes 2019-04-26 21:58 ` Konstantin Ryabitsev 2019-04-26 21:58 ` Konstantin Ryabitsev 2019-04-26 22:07 ` Konstantin Ryabitsev 2019-04-26 22:07 ` Konstantin Ryabitsev 2019-04-29 17:32 ` Nick Desaulniers 2019-04-29 17:32 ` Nick Desaulniers 2019-04-30 18:22 ` Nick Desaulniers 2019-04-30 18:22 ` Nick Desaulniers 2019-05-02 8:57 ` Rasmus Villemoes 2019-05-02 8:57 ` Rasmus Villemoes 2019-04-09 21:25 ` Rasmus Villemoes [this message] 2019-04-09 21:25 ` [PATCH 10/10] powerpc: select DYNAMIC_DEBUG_RELATIVE_POINTERS for PPC64 Rasmus Villemoes 2019-04-23 15:37 ` Christophe Leroy 2019-04-23 19:36 ` Andrew Morton 2019-04-23 19:36 ` Andrew Morton 2019-04-24 6:46 ` Rasmus Villemoes 2019-04-24 6:46 ` Rasmus Villemoes 2019-05-06 6:48 ` [PATCH 00/10] implement DYNAMIC_DEBUG_RELATIVE_POINTERS Rasmus Villemoes 2019-05-06 6:48 ` Rasmus Villemoes 2019-05-06 6:48 ` Rasmus Villemoes 2019-05-06 7:05 ` Ingo Molnar 2019-05-06 7:05 ` Ingo Molnar 2019-05-06 7:05 ` Ingo Molnar 2019-05-06 7:34 ` Rasmus Villemoes 2019-05-06 7:34 ` Rasmus Villemoes 2019-05-06 7:34 ` Rasmus Villemoes 2019-05-06 7:48 ` Ingo Molnar 2019-05-06 7:48 ` Ingo Molnar 2019-05-06 7:48 ` Ingo Molnar 2019-05-06 14:48 ` Segher Boessenkool 2019-05-06 14:48 ` Segher Boessenkool 2019-05-06 14:48 ` Segher Boessenkool
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