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mm/page_alloc: add a missing mm_page_alloc_zone_locked() tracepoint
commit ce8f86e upstream. The trace point *trace_mm_page_alloc_zone_locked()* in __rmqueue() does not currently cover all branches. Add the missing tracepoint and check the page before do that. [akpm@linux-foundation.org: use IS_ENABLED() to suppress warning] Link: https://lkml.kernel.org/r/20201228132901.41523-1-carver4lio@163.com Signed-off-by: Hailong liu <liu.hailong6@zte.com.cn> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ivan Babrou <ivan@cloudflare.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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