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    Subject[tip:perf/core] perf: Fix check at end of event search
    Commit-ID:  d9f599e1e6d019968b35d2dc63074b9e8964fa69
    Gitweb: http://git.kernel.org/tip/d9f599e1e6d019968b35d2dc63074b9e8964fa69
    Author: Dan Carpenter <error27@gmail.com>
    AuthorDate: Sat, 20 Mar 2010 17:39:11 +0300
    Committer: Steven Rostedt <rostedt@goodmis.org>
    CommitDate: Thu, 6 May 2010 19:49:52 -0400

    perf: Fix check at end of event search

    The original code doesn't work because "call" is never NULL there.

    Signed-off-by: Dan Carpenter <error27@gmail.com>
    LKML-Reference: <20100320143911.GF5331@bicker>
    Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
    ---
    kernel/trace/trace_events_filter.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
    index 88c0b6d..58092d8 100644
    --- a/kernel/trace/trace_events_filter.c
    +++ b/kernel/trace/trace_events_filter.c
    @@ -1398,7 +1398,7 @@ int ftrace_profile_set_filter(struct perf_event *event, int event_id,
    }

    err = -EINVAL;
    - if (!call)
    + if (&call->list == &ftrace_events)
    goto out_unlock;

    err = -EEXIST;

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