Messages in this thread | | | Date | Mon, 02 Jul 2012 16:03:22 -0400 | From | Steven Rostedt <> | Subject | [PATCH 0/6] [RFC v3] ftrace/kprobes: Setting up ftrace for kprobes |
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This is the (hopefully) final round of RFCs, for having kprobes use ftrace as optimization. This round, I did not include Masami's patches that are on top of this, simply because I posted them twice before with no changes. I have them still on top of this series, but I'm only posting my set. The final pull request will also include Masami's.
If you are interested in Masami's changes, you can find them here:
http://marc.info/?l=linux-kernel&m=133954203218870&w=2 Patches 7 - 13 are mostly Masami's and some are mine. But none were changed in this release. I may post them again after these are reviewed.
This round, I only did the updates that Masami recommended. I did not modify the ones that he gave his 'Reviewed-by' tag, except to change the change log to have that tag.
What was changed were:
Patch 3: Moved out the x86 changes into patch 5 Added a SAVED_REGS_IF_SUPPORTED flag, that can be set if the callback can handle the regs parameter being NULL. If the ftrace_ops only has SAVED_REGS set, it will fail the registering if the arch does not support saving regs.
Patch 5: Incorporated x86 changes from the previous patch 3.
Patch 6: Have i386 restore flags on return of a function trace that saves regs.
Masami,
Can you review those patches (I believe the rest have your Reviewed-by already). Then I'll add that tag and push for a pull request.
Thanks!
-- Steve
Steven Rostedt (6): ftrace: Pass ftrace_ops as third parameter to function trace callback ftrace: Consolidate arch dependent functions with 'list' function ftrace: Return pt_regs to function trace callback ftrace/x86_32: Push ftrace_ops in as 3rd parameter to function tracer ftrace/x86: Add separate function to save regs ftrace/x86: Add save_regs for i386 function calls
---- arch/x86/include/asm/ftrace.h | 47 +++++--- arch/x86/kernel/entry_32.S | 56 +++++++++ arch/x86/kernel/entry_64.S | 89 ++++++++++++-- arch/x86/kernel/ftrace.c | 73 +++++++++++- include/linux/ftrace.h | 138 ++++++++++++++++++++-- kernel/trace/ftrace.c | 236 +++++++++++++++++++++++++------------ kernel/trace/trace_event_perf.c | 3 +- kernel/trace/trace_events.c | 3 +- kernel/trace/trace_functions.c | 10 +- kernel/trace/trace_irqsoff.c | 3 +- kernel/trace/trace_sched_wakeup.c | 3 +- kernel/trace/trace_selftest.c | 20 +++- kernel/trace/trace_stack.c | 3 +- 13 files changed, 557 insertions(+), 127 deletions(-)
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