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| author | Paul E. McKenney <[email protected]> | 2009-10-14 10:15:55 -0700 |
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| committer | Ingo Molnar <[email protected]> | 2009-10-15 11:17:16 +0200 |
| commit | 37c72e56f6b234ea7387ba530434a80abf2658d8 (patch) | |
| tree | 1c589c3ecdebbe19488359795cde4c55726a63aa /lib/string_helpers.c | |
| parent | 2bc872036e1c5948b5b02942810bbdd8dbdb9812 (diff) | |
rcu: Prevent RCU IPI storms in presence of high call_rcu() load
As the number of callbacks on a given CPU rises, invoke
force_quiescent_state() only every blimit number of callbacks
(defaults to 10,000), and even then only if no other CPU has
invoked force_quiescent_state() in the meantime.
This should fix the performance regression reported by Nick.
Reported-by: Nick Piggin <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
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Cc: [email protected]
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Cc: [email protected]
LKML-Reference: <12555405592133-git-send-email->
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions