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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-05 21:50:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-05 21:50:22 +0300
commit660f6a360be399f4ebdd6572a3d24afe54e9bb1c (patch)
tree9c16463c495a656e34577d59c97b58997b61d242 /arch/Kconfig
parent586fac13f8685bf9dfb32e1ee98bfb14f0dd0061 (diff)
parente5a11016643d1ab7172193591506d33a844734cc (diff)
downloadlinux-660f6a360be399f4ebdd6572a3d24afe54e9bb1c.tar.xz
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/Kconfig13
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:
#