forked from luck/tmp_suning_uos_patched
trace: Fix missing assignment in trace_ctxwake_*
The state char variable S should be reassigned, if S == 0. We are missing the state of the task that is going to sleep for the context switch events (in the raw mode). Fortunately the problem arises with the sched_switch/wake_up tracers, not the sched trace events. The formers are legacy now. But still, that was buggy. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Cc: Steven Rostedt <srostedt@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <4AC43118.6050409@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -883,7 +883,7 @@ static int trace_ctxwake_raw(struct trace_iterator *iter, char S)
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trace_assign_type(field, iter->ent);
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if (!S)
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task_state_char(field->prev_state);
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S = task_state_char(field->prev_state);
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T = task_state_char(field->next_state);
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if (!trace_seq_printf(&iter->seq, "%d %d %c %d %d %d %c\n",
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field->prev_pid,
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@ -918,7 +918,7 @@ static int trace_ctxwake_hex(struct trace_iterator *iter, char S)
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trace_assign_type(field, iter->ent);
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if (!S)
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task_state_char(field->prev_state);
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S = task_state_char(field->prev_state);
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T = task_state_char(field->next_state);
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SEQ_PUT_HEX_FIELD_RET(s, field->prev_pid);
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