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Subject[PATCH v5 00/21] kprobes: Unify kretprobe trampoline handlers and make kretprobe lockless
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Hi,

Here is the 5th version of the series to unify the kretprobe trampoline handler
and to make the kretprobe lockless. Thanks Peter for this work !!

Previous version is here;

https://lkml.kernel.org/r/159861759775.992023.12553306821235086809.stgit@devnote2

This version merges the remove-task-scan patch into remove kretprobe hash
patch, fixes code according to the comments, and fixes a minor issues.

This version is also available on
git://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git lockless-kretprobe-v5

I ran smoke test and ftracetest on x86-64 and did build tests for x86-64, i386, arm,
arm64, and mips.


Thank you,

---

Masami Hiramatsu (16):
kprobes: Add generic kretprobe trampoline handler
x86/kprobes: Use generic kretprobe trampoline handler
arm: kprobes: Use generic kretprobe trampoline handler
arm64: kprobes: Use generic kretprobe trampoline handler
arc: kprobes: Use generic kretprobe trampoline handler
csky: kprobes: Use generic kretprobe trampoline handler
ia64: kprobes: Use generic kretprobe trampoline handler
mips: kprobes: Use generic kretprobe trampoline handler
parisc: kprobes: Use generic kretprobe trampoline handler
powerpc: kprobes: Use generic kretprobe trampoline handler
s390: kprobes: Use generic kretprobe trampoline handler
sh: kprobes: Use generic kretprobe trampoline handler
sparc: kprobes: Use generic kretprobe trampoline handler
kprobes: Remove NMI context check
kprobes: Free kretprobe_instance with rcu callback
kprobes: Make local used functions static

Peter Zijlstra (5):
llist: Add nonatomic __llist_add() and __llist_dell_all()
kprobes: Remove kretprobe hash
asm-generic/atomic: Add try_cmpxchg() fallbacks
freelist: Lock less freelist
kprobes: Replace rp->free_instance with freelist


arch/arc/kernel/kprobes.c | 54 ------
arch/arm/probes/kprobes/core.c | 78 ---------
arch/arm64/kernel/probes/kprobes.c | 78 ---------
arch/csky/kernel/probes/kprobes.c | 77 --------
arch/ia64/kernel/kprobes.c | 77 --------
arch/mips/kernel/kprobes.c | 54 ------
arch/parisc/kernel/kprobes.c | 76 --------
arch/powerpc/kernel/kprobes.c | 53 ------
arch/s390/kernel/kprobes.c | 79 ---------
arch/sh/kernel/kprobes.c | 58 ------
arch/sparc/kernel/kprobes.c | 51 ------
arch/x86/include/asm/atomic.h | 2
arch/x86/include/asm/atomic64_64.h | 2
arch/x86/include/asm/cmpxchg.h | 2
arch/x86/kernel/kprobes/core.c | 108 ------------
drivers/gpu/drm/i915/i915_request.c | 6 -
include/asm-generic/atomic-instrumented.h | 216 ++++++++++++++----------
include/linux/atomic-arch-fallback.h | 90 +++++++++-
include/linux/atomic-fallback.h | 90 +++++++++-
include/linux/freelist.h | 129 ++++++++++++++
include/linux/kprobes.h | 74 +++++---
include/linux/llist.h | 23 +++
include/linux/sched.h | 4
kernel/fork.c | 4
kernel/kprobes.c | 264 +++++++++++++----------------
kernel/trace/trace_kprobe.c | 3
scripts/atomic/gen-atomic-fallback.sh | 63 ++++++-
scripts/atomic/gen-atomic-instrumented.sh | 29 +++
28 files changed, 735 insertions(+), 1109 deletions(-)
create mode 100644 include/linux/freelist.h

--
Masami Hiramatsu (Linaro) <mhiramat@kernel.org>

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