[PATCH] renumber PTRACE_EVENT_STOP so that future PTRACE_O_TRACEfoo

[Denys Vlasenko]

PTRACE_EVENT_foo and PTRACE_O_TRACEfoo used to match.

New PTRACE_EVENT_STOP is the first event which has no
corresponding PTRACE_O_TRACE option. If we will ever
want to add another such option, its PTRACE_EVENT's
value will collide with PTRACE_EVENT_STOP's value.

This patch changes PTRACE_EVENT_STOP value to prevent this.

While at it, added comment - the one above,
"Wait extended result codes for the above trace options",
is not true for PTRACE_EVENT_STOP.

Signed-off-by: Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx>
--
vda

diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 800f113..1729c00 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -72,7 +72,8 @@
 #define PTRACE_EVENT_EXEC	4
 #define PTRACE_EVENT_VFORK_DONE	5
 #define PTRACE_EVENT_EXIT	6
-#define PTRACE_EVENT_STOP	7
+/* Extended result codes which aren't enabled by options.  */
+#define PTRACE_EVENT_STOP	128

 #include <asm/ptrace.h>

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