Merged into previous patch. f221a0258c4a ve/page_alloc, kstat: account allocation latencies per-task and per-thread
-- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team On 05/18/2021 08:48 PM, Andrey Zhadchenko wrote:
From: Andrey Ryabinin <[email protected]> It seems that 'struct task_struct' not initialized to zero after allocation. Thus we need to initialize alloc_lat explicitly. https://jira.sw.ru/browse/PSBM-81395 Signed-off-by: Andrey Ryabinin <[email protected]> Reviewed-by: Kirill Tkhai <[email protected]> (cherry-picked from 82ddc4c43f2d97c5c0d009072e5b06acf3f3a241) Signed-off-by: Andrey Zhadchenko <[email protected]> --- kernel/fork.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/fork.c b/kernel/fork.c index c996de5..61175de 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -919,6 +919,10 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node) if (orig->cpus_ptr == &orig->cpus_mask) tsk->cpus_ptr = &tsk->cpus_mask; +#ifdef CONFIG_VE + memset(tsk->alloc_lat, 0, sizeof(tsk->alloc_lat)); +#endif + /* * One for the user space visible state that goes away when reaped. * One for the scheduler.
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