lkml.org 
[lkml]   [2008]   [Dec]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [PATCH 2/3] ftrace: use struct pid
    From
    Date
    On Thu, 2008-12-04 at 04:42 -0800, Eric W. Biederman wrote:
    >
    > > +static void clear_ftrace_pid_task(struct pid **pid)
    > > +{
    > > + struct task_struct *p;
    > > +
    > rcu_read_lock();
    >
    > > + do_each_pid_task(*pid, PIDTYPE_PID, p) {
    > > + clear_tsk_trace_trace(p);
    > > + } while_each_pid_task(*pid, PIDTYPE_PID, p);
    > rcu_read_unlock()
    >
    > > + put_pid(*pid);
    > > +
    > > + *pid = NULL;
    > > +}

    Could we get away with sticking the rcu_read_{un}lock() inside those
    macros? Those are going to get used in pretty high level code and we're
    allowed to nest rcu_read_lock(). No danger of deadlocks or lock
    inversions.

    -- Dave



    \
     
     \ /
      Last update: 2008-12-04 13:59    [W:0.021 / U:29.932 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site