Merge branch 'kmap_atomic' of git://github.com/congwang/linux

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 92ce83a..3908544 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -63,6 +63,8 @@
 #include <trace/events/task.h>
 #include "internal.h"
 
+#include <trace/events/sched.h>
+
 int core_uses_pid;
 char core_pattern[CORENAME_MAX_SIZE] = "core";
 unsigned int core_pipe_limit;
@@ -848,6 +850,7 @@ static int exec_mmap(struct mm_struct *mm)
        if (old_mm) {
                up_read(&old_mm->mmap_sem);
                BUG_ON(active_mm != old_mm);
+               setmax_mm_hiwater_rss(&tsk->signal->maxrss, old_mm);
                mm_update_next_owner(old_mm);
                mmput(old_mm);
                return 0;
@@ -975,8 +978,8 @@ static int de_thread(struct task_struct *tsk)
        sig->notify_count = 0;
 
 no_thread_group:
-       if (current->mm)
-               setmax_mm_hiwater_rss(&sig->maxrss, current->mm);
+       /* we have changed execution domain */
+       tsk->exit_signal = SIGCHLD;
 
        exit_itimers(sig);
        flush_itimer_signals();
@@ -1339,13 +1342,13 @@ int remove_arg_zero(struct linux_binprm *bprm)
                        ret = -EFAULT;
                        goto out;
                }
-               kaddr = kmap_atomic(page, KM_USER0);
+               kaddr = kmap_atomic(page);
 
                for (; offset < PAGE_SIZE && kaddr[offset];
                                offset++, bprm->p++)
                        ;
 
-               kunmap_atomic(kaddr, KM_USER0);
+               kunmap_atomic(kaddr);
                put_arg_page(page);
 
                if (offset == PAGE_SIZE)
@@ -1402,9 +1405,10 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
                         */
                        bprm->recursion_depth = depth;
                        if (retval >= 0) {
-                               if (depth == 0)
-                                       ptrace_event(PTRACE_EVENT_EXEC,
-                                                       old_pid);
+                               if (depth == 0) {
+                                       trace_sched_process_exec(current, old_pid, bprm);
+                                       ptrace_event(PTRACE_EVENT_EXEC, old_pid);
+                               }
                                put_binfmt(fmt);
                                allow_write_access(bprm->file);
                                if (bprm->file)
@@ -1915,7 +1919,6 @@ static int coredump_wait(int exit_code, struct core_state *core_state)
 {
        struct task_struct *tsk = current;
        struct mm_struct *mm = tsk->mm;
-       struct completion *vfork_done;
        int core_waiters = -EBUSY;
 
        init_completion(&core_state->startup);
@@ -1927,22 +1930,9 @@ static int coredump_wait(int exit_code, struct core_state *core_state)
                core_waiters = zap_threads(tsk, mm, core_state, exit_code);
        up_write(&mm->mmap_sem);
 
-       if (unlikely(core_waiters < 0))
-               goto fail;
-
-       /*
-        * Make sure nobody is waiting for us to release the VM,
-        * otherwise we can deadlock when we wait on each other
-        */
-       vfork_done = tsk->vfork_done;
-       if (vfork_done) {
-               tsk->vfork_done = NULL;
-               complete(vfork_done);
-       }
-
-       if (core_waiters)
+       if (core_waiters > 0)
                wait_for_completion(&core_state->startup);
-fail:
+
        return core_waiters;
 }