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d977706172
[ Upstream commit 6954e41526 ]
Instead of having the logic that does trace_pid_list open coded, wrap it in
abstract functions. This will allow a rewrite of the logic that implements
the trace_pid_list without affecting the users.
Note, this causes a change in behavior. Every time a pid is written into
the set_*_pid file, it creates a new list and uses RCU to update it. If
pid_max is lowered, but there was a pid currently in the list that was
higher than pid_max, those pids will now be removed on updating the list.
The old behavior kept that from happening.
The rewrite of the pid_list logic will no longer depend on pid_max,
and will return the old behavior.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
13 lines
257 B
C
13 lines
257 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Do not include this file directly. */
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#ifndef _TRACE_INTERNAL_PID_LIST_H
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#define _TRACE_INTERNAL_PID_LIST_H
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struct trace_pid_list {
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int pid_max;
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unsigned long *pids;
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};
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#endif /* _TRACE_INTERNAL_PID_LIST_H */
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