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authorMasami Hiramatsu <mhiramat@redhat.com>2007-10-16 04:27:49 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 12:43:10 -0400
commitf438d914b220051d4cbc65cbc5d98e163c85c93b (patch)
tree75e7fda155a8494595f6ae0539bbb64ef98230f6 /include/asm-ia64
parent49dce689ad4ef0fd1f970ef762168e4bd46f69a3 (diff)
kprobes: support kretprobe blacklist
Introduce architecture dependent kretprobe blacklists to prohibit users from inserting return probes on the function in which kprobes can be inserted but kretprobes can not. This patch also removes "__kprobes" mark from "__switch_to" on x86_64 and registers "__switch_to" to the blacklist on x86-64, because that mark is to prohibit user from inserting only kretprobe. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-ia64')
-rw-r--r--include/asm-ia64/kprobes.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-ia64/kprobes.h b/include/asm-ia64/kprobes.h
index 6c79edf24d73..a93ce9ef07ff 100644
--- a/include/asm-ia64/kprobes.h
+++ b/include/asm-ia64/kprobes.h
@@ -83,6 +83,7 @@ struct kprobe_ctlblk {
83}; 83};
84 84
85#define ARCH_SUPPORTS_KRETPROBES 85#define ARCH_SUPPORTS_KRETPROBES
86#define kretprobe_blacklist_size 0
86 87
87#define SLOT0_OPCODE_SHIFT (37) 88#define SLOT0_OPCODE_SHIFT (37)
88#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) 89#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))