[PATCH v4 -tip 0/3] tracing: make a snapshot feature available from userspace

Hi, Steven, I updated the patch which replaces static variable 'old_tracer'. v3->v4: [1/3] tracing: replace static old_tracer with trace iterator's pointer to the original tracer's name - changed to comparison between pointers instead of strcmp (v3:

[PATCH v4 -tip 0/3] tracing: make a snapshot feature available from userspace

Hi, Steven, I updated the patch which replaces static variable 'old_tracer'. v3-v4: [1/3] tracing: replace static old_tracer with trace iterator's pointer to the original tracer's name - changed to comparison between pointers instead of strcmp (v3: