Commit
a63eaf34ae6 ("perf_counter: Dynamically allocate tasks'
perf_counter_context struct") broke COMM and MMAP notification for
cpu wide counters by dropping out early if there was no task context,
thereby also not iterating the cpu context.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
cpuctx = &get_cpu_var(perf_cpu_context);
perf_counter_comm_ctx(&cpuctx->ctx, comm_event);
cpuctx = &get_cpu_var(perf_cpu_context);
perf_counter_comm_ctx(&cpuctx->ctx, comm_event);
+ if (cpuctx->task_ctx)
+ perf_counter_comm_ctx(cpuctx->task_ctx, comm_event);
put_cpu_var(perf_cpu_context);
put_cpu_var(perf_cpu_context);
-
- perf_counter_comm_ctx(current->perf_counter_ctxp, comm_event);
}
void perf_counter_comm(struct task_struct *task)
}
void perf_counter_comm(struct task_struct *task)
if (!atomic_read(&nr_comm_tracking))
return;
if (!atomic_read(&nr_comm_tracking))
return;
- if (!current->perf_counter_ctxp)
- return;
comm_event = (struct perf_comm_event){
.task = task,
comm_event = (struct perf_comm_event){
.task = task,
cpuctx = &get_cpu_var(perf_cpu_context);
perf_counter_mmap_ctx(&cpuctx->ctx, mmap_event);
cpuctx = &get_cpu_var(perf_cpu_context);
perf_counter_mmap_ctx(&cpuctx->ctx, mmap_event);
+ if (cpuctx->task_ctx)
+ perf_counter_mmap_ctx(cpuctx->task_ctx, mmap_event);
put_cpu_var(perf_cpu_context);
put_cpu_var(perf_cpu_context);
- perf_counter_mmap_ctx(current->perf_counter_ctxp, mmap_event);
-
if (!atomic_read(&nr_mmap_tracking))
return;
if (!atomic_read(&nr_mmap_tracking))
return;
- if (!current->perf_counter_ctxp)
- return;
mmap_event = (struct perf_mmap_event){
.file = file,
mmap_event = (struct perf_mmap_event){
.file = file,