tracing/probes: Split [ku]probes_fetch_type_table

Use separate fetch_type_table for kprobes and uprobes.  It currently
shares all fetch methods but some of them will be implemented
differently later.

This is not to break build if [ku]probes is configured alone (like
!CONFIG_KPROBE_EVENT and CONFIG_UPROBE_EVENT).  So I added '__weak'
to the table declaration so that it can be safely omitted when it
configured out.

Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index c9ffdafb9ada..fe3f00c381c0 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -88,6 +88,26 @@ static int kprobe_dispatcher(struct kprobe *kp, struct pt_regs *regs);
 static int kretprobe_dispatcher(struct kretprobe_instance *ri,
                                 struct pt_regs *regs);
 
+/* Fetch type information table */
+const struct fetch_type kprobes_fetch_type_table[] = {
+        /* Special types */
+        [FETCH_TYPE_STRING] = __ASSIGN_FETCH_TYPE("string", string, string,
+                                        sizeof(u32), 1, "__data_loc char[]"),
+        [FETCH_TYPE_STRSIZE] = __ASSIGN_FETCH_TYPE("string_size", u32,
+                                        string_size, sizeof(u32), 0, "u32"),
+        /* Basic types */
+        ASSIGN_FETCH_TYPE(u8,  u8,  0),
+        ASSIGN_FETCH_TYPE(u16, u16, 0),
+        ASSIGN_FETCH_TYPE(u32, u32, 0),
+        ASSIGN_FETCH_TYPE(u64, u64, 0),
+        ASSIGN_FETCH_TYPE(s8,  u8,  1),
+        ASSIGN_FETCH_TYPE(s16, u16, 1),
+        ASSIGN_FETCH_TYPE(s32, u32, 1),
+        ASSIGN_FETCH_TYPE(s64, u64, 1),
+
+        ASSIGN_FETCH_TYPE_END
+};
+
 /*
  * Allocate new trace_probe and initialize it (including kprobes).
  */