Messages in this thread Patch in this message | | | Date | Tue, 16 Jul 2019 15:00:18 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 4/5] tracing: Let filter_assign_type() detect FILTER_PTR_STRING |
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From: Cong Wang <xiyou.wangcong@gmail.com>
filter_assign_type() could detect dynamic string and static string, but not string pointers. Teach filter_assign_type() to detect string pointers, and this will be needed by trace event injection code.
BTW, trace event hist uses FILTER_PTR_STRING too. Link: http://lkml.kernel.org/r/20190525165802.25944-3-xiyou.wangcong@gmail.com
Cc: Ingo Molnar <mingo@redhat.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> --- kernel/trace/trace_events_filter.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index d3e59312ef40..550e8a0d048a 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -1080,6 +1080,9 @@ int filter_assign_type(const char *type) if (strchr(type, '[') && strstr(type, "char")) return FILTER_STATIC_STRING; + if (strcmp(type, "char *") == 0 || strcmp(type, "const char *") == 0) + return FILTER_PTR_STRING; + return FILTER_OTHER; } -- 2.20.1
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