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| author |   Vedang Patel <vedang.patel@intel.com> | 2018-01-15 20:51:38 -0600 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-03-10 16:05:49 -0500 |
| commit | c193707dde77ace92a649cd59a17e105e2fbeaef (patch) | |
| tree | 4469f19c58457806bb5a1ea7ed3508e140b19cea /kernel/trace/trace_events_hist.c | |
| parent | tracing: Add support to detect and avoid duplicates (diff) | |
| download | linux-dev-c193707dde77ace92a649cd59a17e105e2fbeaef.tar.xz linux-dev-c193707dde77ace92a649cd59a17e105e2fbeaef.zip | |
tracing: Remove code which merges duplicates
We now have the logic to detect and remove duplicates in the
tracing_map hash table. The code which merges duplicates in the
histogram is redundant now. So, modify this code just to detect
duplicates. The duplication detection code is still kept to ensure
that any rare race condition which might cause duplicates does not go
unnoticed.
Link: http://lkml.kernel.org/r/55215cf59e2674391bdaf772fdafc4c393352b03.1516069914.git.tom.zanussi@linux.intel.com
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_events_hist.c')
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 1e1558c99d56..712260e72be5 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -340,16 +340,6 @@ static int hist_trigger_elt_comm_alloc(struct tracing_map_elt *elt) return 0; } -static void hist_trigger_elt_comm_copy(struct tracing_map_elt *to, - struct tracing_map_elt *from) -{ - char *comm_from = from->private_data; - char *comm_to = to->private_data; - - if (comm_from) - memcpy(comm_to, comm_from, TASK_COMM_LEN + 1); -} - static void hist_trigger_elt_comm_init(struct tracing_map_elt *elt) { char *comm = elt->private_data; @@ -360,7 +350,6 @@ static void hist_trigger_elt_comm_init(struct tracing_map_elt *elt) static const struct tracing_map_ops hist_trigger_elt_comm_ops = { .elt_alloc = hist_trigger_elt_comm_alloc, - .elt_copy = hist_trigger_elt_comm_copy, .elt_free = hist_trigger_elt_comm_free, .elt_init = hist_trigger_elt_comm_init, }; |