tracing/fastboot: get the initcall name before it disappears

After some initcall traces, some initcall names may be inconsistent.
That's because these functions will disappear from the .init section
and also their name from the symbols table.

So we have to copy the name of the function in a buffer large enough
during the trace appending. It is not costly for the ring_buffer because
the number of initcall entries is commonly not really large.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 2 deletions

diff --git a/init/main.c b/init/main.c
index 61eb66159391..8e96a0ef17f4 100644
--- a/init/main.c
+++ b/init/main.c
@@ -712,7 +712,6 @@ int do_one_initcall(initcall_t fn)
 
         if (initcall_debug) {
                 it.caller = task_pid_nr(current);
-                it.func = fn;
                 printk("calling  %pF @ %i\n", fn, it.caller);
                 it.calltime = ktime_get();
         }
@@ -725,7 +724,7 @@ int do_one_initcall(initcall_t fn)
                 it.duration = (unsigned long long) delta.tv64 >> 20;
                 printk("initcall %pF returned %d after %Ld msecs\n", fn,
                         it.result, it.duration);
-                trace_boot(&it);
+                trace_boot(&it, fn);
         }
 
         msgbuf[0] = 0;