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Subject[PATCH 02/22] signal: Document the strange si_codes used by ptrace event stops
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
include/uapi/asm-generic/siginfo.h | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index cbe1b0cc7a6a..7158421ac911 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -225,6 +225,11 @@ typedef struct siginfo {
#define TRAP_HWBKPT 4 /* hardware breakpoint/watchpoint */
#define NSIGTRAP 4

+/*
+ * There are an additional set of SIGTRAP si_codes used by ptrace
+ * that of the form: ((PTRACE_EVENT_XXX << 8) | SIGTRAP)
+ */
+
/*
* SIGCHLD si_codes
*/
--
2.14.1
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