On Wed, 2016-02-10 at 18:29 +0100, Torsten Duwe wrote: > Changes since V7: > * drop "notrace" attribute for MMU-aiding functions > and their callees. > * merge "-mprofile-kernel"-stripping patches into one. > > Changes since v6: > * include Petr's patch, on popular demand ;) > * move #ifdefs out of functions for readability; > introduce static helper functions instead. > * No more literal binary instructions in hex, > at least not added by this patch set. > * add compile time checker to detect the presence > of known-good -mprofile-kernel support. > * limit Kconfig / compile to the configurations really supported: > + (static) FTRACE with -pg > + DYNAMIC_FTRACE with -pg with or without -mprofile-kernel > (depending on the compiler) > + DYNAMIC_FTRACE_WITH_REGS only with -mprofile-kernel > (will error out if the compiler is broken) > > Changes since v5: > * extra "std r0,LRSAVE(r1)" for gcc-6 > This makes the code compiler-agnostic. > * Follow Petr Mladek's suggestion to avoid > redefinition of HAVE_LIVEPATCH > > Changes since v4: > * change comment style in entry_64.S to C89 > (nobody is using assembler syntax comments there). > * the bool function restore_r2 shouldn't return 2, > that's a little confusing. > * Test whether the compiler supports -mprofile-kernel > and only then define CC_USING_MPROFILE_KERNEL > * also make the return value of klp_check_compiler_support > depend on that. > > Major changes since v3: > * the graph tracer works now. > It turned out the stack frame it tried to manipulate does not > exist at that point. > * changes only needed in order to support -mprofile-kernel are now > in a separate patch, prepended. > * Kconfig cleanup so this is only selectable on ppc64le. > > Petr Mladek (1): > livepatch: Detect offset for the ftrace location during build > > Torsten Duwe (7): > ppc64 (le): prepare for -mprofile-kernel > ppc64le FTRACE_WITH_REGS implementation > ppc use ftrace_modify_all_code default > ppc64 ftrace_with_regs configuration variables > ppc64 ftrace_with_regs: disable profiling for some files > Implement kernel live patching for ppc64le (ABIv2) > Enable LIVEPATCH to be configured on ppc64le and add livepatch.o if it > is selected > > arch/powerpc/Kconfig | 6 + > arch/powerpc/Makefile | 17 +++ > arch/powerpc/gcc-mprofile-kernel-notrace.sh | 33 ++++++ > arch/powerpc/include/asm/code-patching.h | 24 ++++ > arch/powerpc/include/asm/ftrace.h | 5 + > arch/powerpc/include/asm/livepatch.h | 45 ++++++++ > arch/powerpc/kernel/Makefile | 13 ++- > arch/powerpc/kernel/entry_64.S | 169 > +++++++++++++++++++++++++++- > arch/powerpc/kernel/ftrace.c | 129 ++++++++++++++++----- > arch/powerpc/kernel/livepatch.c | 38 +++++++ > arch/powerpc/kernel/module_64.c | 56 ++++++++- > arch/powerpc/lib/Makefile | 4 +- > arch/s390/Kconfig | 1 + > kernel/livepatch/Makefile | 13 +++ > kernel/livepatch/core.c | 12 +- > kernel/livepatch/ftrace-test.c | 6 + > kernel/trace/Kconfig | 5 + > scripts/recordmcount.c | 6 +- > scripts/recordmcount.h | 17 ++- > 19 files changed, 552 insertions(+), 47 deletions(-) > create mode 100755 arch/powerpc/gcc-mprofile-kernel-notrace.sh > create mode 100644 arch/powerpc/include/asm/livepatch.h > create mode 100644 arch/powerpc/kernel/livepatch.c > create mode 100644 kernel/livepatch/ftrace-test.c > Quick question - I presume these apply on top of 4.5.0-rc2? Balbir Singh. -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
