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authorNamhyung Kim <namhyung.kim@lge.com>2013-11-26 15:21:04 +0900
committerSteven Rostedt <rostedt@goodmis.org>2014-01-02 16:17:41 -0500
commit1301a44e77557e928700f91c7083c5770054c212 (patch)
treea2bb5e3dae59f410a2030790e1f2cdf2071e4487 /kernel/trace/trace_probe.h
parent3fd996a29515df23b3f20c36d69788a3707254a9 (diff)
downloadtalos-obmc-linux-1301a44e77557e928700f91c7083c5770054c212.tar.gz
talos-obmc-linux-1301a44e77557e928700f91c7083c5770054c212.zip
tracing/probes: Move 'symbol' fetch method to kprobes
Move existing functions to trace_kprobe.c and add NULL entries to the uprobes fetch type table. I don't make them static since some generic routines like update/free_XXX_fetch_param() require pointers to the functions. Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: 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>
Diffstat (limited to 'kernel/trace/trace_probe.h')
-rw-r--r--kernel/trace/trace_probe.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/kernel/trace/trace_probe.h b/kernel/trace/trace_probe.h
index 8211dd674ab6..8be84550ceb3 100644
--- a/kernel/trace/trace_probe.h
+++ b/kernel/trace/trace_probe.h
@@ -239,6 +239,30 @@ ASSIGN_FETCH_FUNC(bitfield, ftype), \
extern __weak const struct fetch_type kprobes_fetch_type_table[];
extern __weak const struct fetch_type uprobes_fetch_type_table[];
+#ifdef CONFIG_KPROBE_EVENT
+struct symbol_cache;
+unsigned long update_symbol_cache(struct symbol_cache *sc);
+void free_symbol_cache(struct symbol_cache *sc);
+struct symbol_cache *alloc_symbol_cache(const char *sym, long offset);
+#else
+struct symbol_cache {
+};
+static inline unsigned long __used update_symbol_cache(struct symbol_cache *sc)
+{
+ return 0;
+}
+
+static inline void __used free_symbol_cache(struct symbol_cache *sc)
+{
+}
+
+static inline struct symbol_cache * __used
+alloc_symbol_cache(const char *sym, long offset)
+{
+ return NULL;
+}
+#endif /* CONFIG_KPROBE_EVENT */
+
struct probe_arg {
struct fetch_param fetch;
struct fetch_param fetch_size;
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