profile: Use vzalloc() rather than vmalloc() & memset()
There's no reason to memset() manually when we have vzalloc(). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Cc: Arjan van de Ven <arjan@infradead.org> Cc: William Irwin <wli@holomorphy.com> LKML-Reference: <alpine.LNX.2.00.1010302150310.1572@swampdragon.chaosbits.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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