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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-05 10:50:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-05 10:50:22 -0800 |
| commit | 660f6a360be399f4ebdd6572a3d24afe54e9bb1c (patch) | |
| tree | 9c16463c495a656e34577d59c97b58997b61d242 /arch/Kconfig | |
| parent | 586fac13f8685bf9dfb32e1ee98bfb14f0dd0061 (diff) | |
| parent | e5a11016643d1ab7172193591506d33a844734cc (diff) | |
| download | lwn-660f6a360be399f4ebdd6572a3d24afe54e9bb1c.tar.gz lwn-660f6a360be399f4ebdd6572a3d24afe54e9bb1c.zip | |
Merge branch 'perf-probes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-probes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Issue at least one memory barrier in stop_machine_text_poke()
perf probe: Correct probe syntax on command line help
perf probe: Add lazy line matching support
perf probe: Show more lines after last line
perf probe: Check function address range strictly in line finder
perf probe: Use libdw callback routines
perf probe: Use elfutils-libdw for analyzing debuginfo
perf probe: Rename probe finder functions
perf probe: Fix bugs in line range finder
perf probe: Update perf probe document
perf probe: Do not show --line option without dwarf support
kprobes: Add documents of jump optimization
kprobes/x86: Support kprobes jump optimization on x86
x86: Add text_poke_smp for SMP cross modifying code
kprobes/x86: Cleanup save/restore registers
kprobes/x86: Boost probes when reentering
kprobes: Jump optimization sysctl interface
kprobes: Introduce kprobes jump optimization
kprobes: Introduce generic insn_slot framework
kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE
Diffstat (limited to 'arch/Kconfig')
| -rw-r--r-- | arch/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 215e46073c45..e5eb1337a537 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -41,6 +41,17 @@ config KPROBES for kernel debugging, non-intrusive instrumentation and testing. If in doubt, say "N". +config OPTPROBES + bool "Kprobes jump optimization support (EXPERIMENTAL)" + default y + depends on KPROBES + depends on !PREEMPT + depends on HAVE_OPTPROBES + select KALLSYMS_ALL + help + This option will allow kprobes to optimize breakpoint to + a jump for reducing its overhead. + config HAVE_EFFICIENT_UNALIGNED_ACCESS bool help @@ -83,6 +94,8 @@ config HAVE_KPROBES config HAVE_KRETPROBES bool +config HAVE_OPTPROBES + bool # # An arch should select this if it provides all these things: # |