The patch titled
ptrace: introduce user_single_step_siginfo() helper
has been added to the -mm tree. Its filename is
ptrace-introduce-user_single_step_siginfo-helper.patch
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Subject: ptrace: introduce user_single_step_siginfo() helper
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Suggested by Roland.
Currently there is no way to synthesize a single-stepping trap in the
arch-independent manner. This patch adds the default helper which fills
siginfo_t, arch/ can can override it.
Architetures which implement user_enable_single_step() should add
user_single_step_siginfo() also.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Acked-by: Roland McGrath <roland@xxxxxxxxxx>
Cc: <linux-arch@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/ptrace.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff -puN include/linux/ptrace.h~ptrace-introduce-user_single_step_siginfo-helper include/linux/ptrace.h
--- a/include/linux/ptrace.h~ptrace-introduce-user_single_step_siginfo-helper
+++ a/include/linux/ptrace.h
@@ -273,6 +273,18 @@ static inline void user_enable_block_ste
}
#endif /* arch_has_block_step */
+#ifdef ARCH_HAS_USER_SINGLE_STEP_INFO
+extern void user_single_step_siginfo(struct task_struct *tsk,
+ struct pt_regs *regs, siginfo_t *info);
+#else
+static inline void user_single_step_siginfo(struct task_struct *tsk,
+ struct pt_regs *regs, siginfo_t *info)
+{
+ memset(info, 0, sizeof(*info));
+ info->si_signo = SIGTRAP;
+}
+#endif
+
#ifndef arch_ptrace_stop_needed
/**
* arch_ptrace_stop_needed - Decide whether arch_ptrace_stop() should be called
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
linux-next.patch
itimers-fix-racy-writes-to-cpu_itimer-fields.patch
posix-cpu-timers-optimize-and-document-timer_create-callback.patch
ptrace-cleanup-ptrace_init_task-ptrace_link-path.patch
ptrace-copy_process-should-disable-stepping.patch
ptrace-introduce-user_single_step_siginfo-helper.patch
ptrace-powerpc-implement-user_single_step_siginfo.patch
ptrace-change-tracehook_report_syscall_exit-to-handle-stepping.patch
ptrace-x86-implement-user_single_step_siginfo.patch
ptrace-x86-change-syscall_trace_leave-to-rely-on-tracehook-when-stepping.patch
signals-send_sig_noinfo-should-be-considered-as-si_fromuser.patch
signals-send_signal-use-si_fromuser-to-detect-from_ancestor_ns.patch
signals-cosmetic-collect_signal-use-si_user.patch
signals-kill-force_sig_specific.patch
signals-check-group_stop_count-after-tracehook_get_signal.patch
utrace-core.patch
do_wait-optimization-do-not-place-sub-threads-on-task_struct-children-list.patch
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