|author||Ananth N Mavinakayanahalli <firstname.lastname@example.org>||2006-10-02 02:17:30 -0700|
|committer||Linus Torvalds <email@example.com>||2006-10-02 07:57:16 -0700|
[PATCH] Kprobes: Make kprobe modules more portable
In an effort to make kprobe modules more portable, here is a patch that: o Introduces the "symbol_name" field to struct kprobe. The symbol->address resolution now happens in the kernel in an architecture agnostic manner. 64-bit powerpc users no longer have to specify the ".symbols" o Introduces the "offset" field to struct kprobe to allow a user to specify an offset into a symbol. o The legacy mechanism of specifying the kprobe.addr is still supported. However, if both the kprobe.addr and kprobe.symbol_name are specified, probe registration fails with an -EINVAL. o The symbol resolution code uses kallsyms_lookup_name(). So CONFIG_KPROBES now depends on CONFIG_KALLSYMS o Apparantly kprobe modules were the only legitimate out-of-tree user of the kallsyms_lookup_name() EXPORT. Now that the symbol resolution happens in-kernel, remove the EXPORT as suggested by Christoph Hellwig o Modify tcp_probe.c that uses the kprobe interface so as to make it work on multiple platforms (in its earlier form, the code wouldn't work, say, on powerpc) Signed-off-by: Ananth N Mavinakayanahalli <firstname.lastname@example.org> Signed-off-by: Prasanna S Panchamukhi <email@example.com> Signed-off-by: Christoph Hellwig <firstname.lastname@example.org> Signed-off-by: Andrew Morton <email@example.com> Signed-off-by: Linus Torvalds <firstname.lastname@example.org>
Diffstat (limited to 'arch/x86_64/Kconfig')
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index b87a19f0d584..0a5d8e659aa4 100644
@@ -690,7 +690,7 @@ source "arch/x86_64/oprofile/Kconfig"
bool "Kprobes (EXPERIMENTAL)"
- depends on EXPERIMENTAL && MODULES
+ depends on KALLSYMS && EXPERIMENTAL && MODULES
Kprobes allows you to trap at almost any kernel address and
execute a callback function. register_kprobe() establishes