diff options
| author | Ananth N Mavinakayanahalli <ananth@in.ibm.com> | 2006-10-02 02:17:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 07:57:16 -0700 |
| commit | 3a872d89baae821a0f6e2c1055d4b47650661137 (patch) | |
| tree | 5ac6aa55e04960e02f25ff5079078f975957b1b3 /arch | |
| parent | 782237a2418e2561a87c86a4832726931adce737 (diff) | |
[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 <ananth@in.ibm.com>
Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/Kconfig | 2 | ||||
| -rw-r--r-- | arch/ia64/Kconfig | 2 | ||||
| -rw-r--r-- | arch/powerpc/Kconfig | 2 | ||||
| -rw-r--r-- | arch/sparc64/Kconfig | 2 | ||||
| -rw-r--r-- | arch/x86_64/Kconfig | 2 |
5 files changed, 5 insertions, 5 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 3fd2f256f2b..af219e51734 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -1142,7 +1142,7 @@ source "arch/i386/oprofile/Kconfig" config KPROBES bool "Kprobes (EXPERIMENTAL)" - depends on EXPERIMENTAL && MODULES + depends on KALLSYMS && EXPERIMENTAL && MODULES help Kprobes allows you to trap at almost any kernel address and execute a callback function. register_kprobe() establishes diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0b7f701d5cf..70f7eb9fed3 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -516,7 +516,7 @@ source "arch/ia64/oprofile/Kconfig" config KPROBES bool "Kprobes (EXPERIMENTAL)" - depends on EXPERIMENTAL && MODULES + depends on KALLSYMS && EXPERIMENTAL && MODULES help Kprobes allows you to trap at almost any kernel address and execute a callback function. register_kprobe() establishes diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index a0dd1b0ee48..032e6ab5d3c 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -1069,7 +1069,7 @@ source "arch/powerpc/oprofile/Kconfig" config KPROBES bool "Kprobes (EXPERIMENTAL)" - depends on PPC64 && EXPERIMENTAL && MODULES + depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES help Kprobes allows you to trap at almost any kernel address and execute a callback function. register_kprobe() establishes diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig index 8d8ca716f7a..b627f8dbcaa 100644 --- a/arch/sparc64/Kconfig +++ b/arch/sparc64/Kconfig @@ -420,7 +420,7 @@ source "arch/sparc64/oprofile/Kconfig" config KPROBES bool "Kprobes (EXPERIMENTAL)" - depends on EXPERIMENTAL && MODULES + depends on KALLSYMS && EXPERIMENTAL && MODULES help Kprobes allows you to trap at almost any kernel address and execute a callback function. register_kprobe() establishes diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index b87a19f0d58..0a5d8e659aa 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig @@ -690,7 +690,7 @@ source "arch/x86_64/oprofile/Kconfig" config KPROBES bool "Kprobes (EXPERIMENTAL)" - depends on EXPERIMENTAL && MODULES + depends on KALLSYMS && EXPERIMENTAL && MODULES help Kprobes allows you to trap at almost any kernel address and execute a callback function. register_kprobe() establishes |