Let perf inject take --kallsyms parameter the same as
perf script and perf report do.  That is needed for
decoding Instruction Trace data using a copy of
/proc/kcore for the kernel object because the kallsyms
path is used to locate that copy.

Signed-off-by: Adrian Hunter <[email protected]>
---
 tools/perf/Documentation/perf-inject.txt | 3 +++
 tools/perf/builtin-inject.c              | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/tools/perf/Documentation/perf-inject.txt 
b/tools/perf/Documentation/perf-inject.txt
index a00a342..dc7442c 100644
--- a/tools/perf/Documentation/perf-inject.txt
+++ b/tools/perf/Documentation/perf-inject.txt
@@ -41,6 +41,9 @@ OPTIONS
        tasks slept. sched_switch contains a callchain where a task slept and
        sched_stat contains a timeslice how long a task slept.
 
+--kallsyms=<file>::
+       kallsyms pathname
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-archive[1]
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index ce691c4..af17800 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -440,6 +440,8 @@ int cmd_inject(int argc, const char **argv, const char 
*prefix __maybe_unused)
                            "where and how long tasks slept"),
                OPT_INCR('v', "verbose", &verbose,
                         "be more verbose (show build ids, etc)"),
+               OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
+                          "kallsyms pathname"),
                OPT_END()
        };
        const char * const inject_usage[] = {
-- 
1.8.3.2

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