If ever PID_MAX_DEFAULT changes, it must be compatible with tracing hashmaps assumptions.
Link: https://lore.kernel.org/r/[email protected]/ Signed-off-by: Michal Koutný <[email protected]> --- kernel/trace/trace_sched_switch.c | 2 ++ 1 file changed, 2 insertions(+) v1 in https://lore.kernel.org/r/[email protected]/ - cohere with code (Steven) diff --git a/kernel/trace/trace_sched_switch.c b/kernel/trace/trace_sched_switch.c index cb49f7279dc80..9ee62364d98d2 100644 --- a/kernel/trace/trace_sched_switch.c +++ b/kernel/trace/trace_sched_switch.c @@ -248,6 +248,8 @@ int trace_save_cmdline(struct task_struct *tsk) if (!tsk->pid) return 1; + BUILD_BUG_ON(!is_power_of_2(PID_MAX_DEFAULT)); + tpid = tsk->pid & (PID_MAX_DEFAULT - 1); /* -- 2.51.0
