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@@ -30,7 +30,7 @@
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static unsigned int blktrace_seq __read_mostly = 1;
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static struct trace_array *blk_tr;
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-static int __read_mostly blk_tracer_enabled;
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+static bool blk_tracer_enabled __read_mostly;
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/* Select an alternative, minimalistic output than the original one */
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#define TRACE_BLK_OPT_CLASSIC 0x1
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@@ -1111,9 +1111,7 @@ static int blk_tracer_init(struct trace_array *tr)
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{
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blk_tr = tr;
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blk_tracer_start(tr);
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- mutex_lock(&blk_probe_mutex);
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- blk_tracer_enabled++;
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- mutex_unlock(&blk_probe_mutex);
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+ blk_tracer_enabled = true;
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return 0;
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}
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@@ -1131,11 +1129,7 @@ static void blk_tracer_reset(struct trace_array *tr)
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if (!atomic_read(&blk_probes_ref))
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return;
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- mutex_lock(&blk_probe_mutex);
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- blk_tracer_enabled--;
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- WARN_ON(blk_tracer_enabled < 0);
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- mutex_unlock(&blk_probe_mutex);
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-
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+ blk_tracer_enabled = false;
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blk_tracer_stop(tr);
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}
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