• Steven Rostedt's avatar
    ftrace: limit use of check pages · 19384c03
    Steven Rostedt authored
    The check_pages function is called often enough that it can cause problems
    with trace outputs or even bringing the system to a halt.
    
    This patch limits the check_pages to the places that are most likely to
    have problems. The check is made at the flip between the global array and
    the max save array, as well as when the size of the buffers changes and
    the self tests.
    
    This patch also removes the BUG_ON from check_pages and replaces it with
    a WARN_ON and disabling of the tracer.
    Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
    Cc: pq@iki.fi
    Cc: proski@gnu.org
    Cc: sandmann@redhat.com
    Cc: a.p.zijlstra@chello.nl
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    19384c03
trace_selftest.c 11.2 KB