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generic-ipi: Kill unnecessary variable - csd_flags

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After commit 8969a5ede0
("generic-ipi: remove kmalloc()"), wait = 0 can be guaranteed,
and all callsites of generic_exec_single() do an unconditional
csd_lock() now.

So csd_flags is unnecessary now. Remove it.

Signed-off-by: Xie XiuQi <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: "Paul E. McKenney" <[email protected]>
Cc: Rusty Russell <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Xie XiuQi authored and Ingo Molnar committed 2013-07-30 22:19:05 +02:00
1 parent 323f54ed0f
commit 46591962cb
1 file changed
+1 -13
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kernel/smp.c
+1 -13
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@@ -186,25 +186,13 @@ void generic_smp_call_function_single_interrupt(void)
while (!list_empty(&list)) {
struct call_single_data *csd;
unsigned int csd_flags;
csd = list_entry(list.next, struct call_single_data, list);
list_del(&csd->list);
/*
* 'csd' can be invalid after this call if flags == 0
* (when called through generic_exec_single()),
* so save them away before making the call:
*/
csd_flags = csd->flags;
csd->func(csd->info);
/*
* Unlocked CSDs are valid through generic_exec_single():
*/
if (csd_flags & CSD_FLAG_LOCK)
csd_unlock(csd);
csd_unlock(csd);
}
}