The patch titled
tracehook: tracehook_signal_handler
has been removed from the -mm tree. Its filename was
tracehook-tracehook_signal_handler.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: tracehook: tracehook_signal_handler
From: Roland McGrath <roland@xxxxxxxxxx>
This defines tracehook_signal_handler() as a hook for the arch signal
handling code to call. It gives ptrace the opportunity to stop for a
pseudo-single-step trap immediately after signal handler setup is done.
Signed-off-by: Roland McGrath <roland@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Reviewed-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/tracehook.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff -puN include/linux/tracehook.h~tracehook-tracehook_signal_handler include/linux/tracehook.h
--- a/include/linux/tracehook.h~tracehook-tracehook_signal_handler
+++ a/include/linux/tracehook.h
@@ -289,4 +289,27 @@ static inline void tracehook_finish_rele
ptrace_release_task(task);
}
+/**
+ * tracehook_signal_handler - signal handler setup is complete
+ * @sig: number of signal being delivered
+ * @info: siginfo_t of signal being delivered
+ * @ka: sigaction setting that chose the handler
+ * @regs: user register state
+ * @stepping: nonzero if debugger single-step or block-step in use
+ *
+ * Called by the arch code after a signal handler has been set up.
+ * Register and stack state reflects the user handler about to run.
+ * Signal mask changes have already been made.
+ *
+ * Called without locks, shortly before returning to user mode
+ * (or handling more signals).
+ */
+static inline void tracehook_signal_handler(int sig, siginfo_t *info,
+ const struct k_sigaction *ka,
+ struct pt_regs *regs, int stepping)
+{
+ if (stepping)
+ ptrace_notify(SIGTRAP);
+}
+
#endif /* <linux/tracehook.h> */
_
Patches currently in -mm which might be from roland@xxxxxxxxxx are
origin.patch
tracehook-syscall.patch
tracehook-config_have_arch_tracehook.patch
x86-tracehook_signal_handler.patch
x86-tracehook-syscall.patch
x86-tracehook-asm-syscallh.patch
x86-signals-use-asm-syscallh.patch
x86-tracehook-tif_notify_resume.patch
x86-tracehook-config_have_arch_tracehook.patch
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