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Rao" , Steven Rostedt , Ingo Molnar , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Subject: [PATCH v1 00/22] powerpc: ftrace optimisation and cleanup and more [v1] Date: Thu, 24 Mar 2022 15:29:50 +0100 Message-Id: X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1648132150; l=2522; s=20211009; h=from:subject:message-id; bh=1kdeof/3p6R0MrXJo/S/TdRiyM63GQANW/OO7r8vz4Y=; b=kGMMi2rAvo8giIT/mEJWlVTPCKKZwoheEmWvvyBG+7zESHejT96yufouHjLeQoG5X/EU69OMbzVc AjNllGhEBAsKp4sZyXEVQ73PYz5+rAcO5xvLleT24WRBY65rlcq9 X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" This series provides optimisation and cleanup of ftrace on powerpc. With this series ftrace activation is about 20% faster on an 8xx. At the end of the series come additional cleanups around ppc-opcode, that would likely conflict with this series if posted separately. Christophe Leroy (22): powerpc/ftrace: Refactor prepare_ftrace_return() powerpc/ftrace: Remove redundant create_branch() calls powerpc/code-patching: Inline is_offset_in_{cond}_branch_range() powerpc/ftrace: Use is_offset_in_branch_range() powerpc/code-patching: Inline create_branch() powerpc/ftrace: Inline ftrace_modify_code() powerpc/ftrace: Use patch_instruction() return directly powerpc/ftrace: Make __ftrace_make_{nop/call}() common to PPC32 and PPC64 powerpc/ftrace: Don't include ftrace.o for CONFIG_FTRACE_SYSCALLS powerpc/ftrace: Use CONFIG_FUNCTION_TRACER instead of CONFIG_DYNAMIC_FTRACE powerpc/ftrace: Remove ftrace_plt_tramps[] powerpc/ftrace: Use BRANCH_SET_LINK instead of value 1 powerpc/ftrace: Use PPC_RAW_xxx() macros instead of opencoding. powerpc/ftrace: Use size macro instead of opencoding powerpc/ftrace: Simplify expected_nop_sequence() powerpc/ftrace: Minimise number of #ifdefs powerpc/inst: Add __copy_inst_from_kernel_nofault() powerpc/ftrace: Don't use copy_from_kernel_nofault() in module_trampoline_target() powerpc/inst: Remove PPC_INST_BRANCH powerpc/modules: Use PPC_INST_BRANCH_MASK instead of opencoding powerpc/inst: Remove PPC_INST_BL powerpc/opcodes: Remove unused PPC_INST_XXX macros arch/powerpc/include/asm/book3s/32/pgtable.h | 2 +- arch/powerpc/include/asm/book3s/64/pgtable.h | 2 +- arch/powerpc/include/asm/code-patching.h | 53 ++- arch/powerpc/include/asm/inst.h | 13 +- arch/powerpc/include/asm/module.h | 6 +- arch/powerpc/include/asm/nohash/pgtable.h | 2 +- arch/powerpc/include/asm/ppc-opcode.h | 20 +- arch/powerpc/include/asm/sections.h | 24 +- arch/powerpc/kernel/module_32.c | 29 +- arch/powerpc/kernel/module_64.c | 10 +- arch/powerpc/kernel/trace/Makefile | 5 +- arch/powerpc/kernel/trace/ftrace.c | 390 ++++++------------- arch/powerpc/lib/code-patching.c | 47 --- arch/powerpc/lib/feature-fixups.c | 2 +- arch/powerpc/net/bpf_jit.h | 2 +- 15 files changed, 229 insertions(+), 378 deletions(-)