From d5d4e02874537d65ed2f431d39bf2f6d2967bd1b Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Thu, 11 Aug 2011 09:27:54 -0700 Subject: [PATCH] [IA64] sn2: add missing put_cpu() sn_hwperf_op_cpu() uses get_cpu() but is missing a corresponding put_cpu(). Reported-by: Thomas Meyer Acked-by: Jack Steiner Signed-off-by: Tony Luck --- arch/ia64/sn/kernel/sn2/sn_hwperf.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c index 30862c0358cd..2de41d44266e 100644 --- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c +++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c @@ -615,11 +615,15 @@ static int sn_hwperf_op_cpu(struct sn_hwperf_op_info *op_info) } } - if (cpu == SN_HWPERF_ARG_ANY_CPU || cpu == get_cpu()) { - /* don't care, or already on correct cpu */ + if (cpu == SN_HWPERF_ARG_ANY_CPU) { + /* don't care which cpu */ sn_hwperf_call_sal(op_info); - } - else { + } else if (cpu == get_cpu()) { + /* already on correct cpu */ + sn_hwperf_call_sal(op_info); + put_cpu(); + } else { + put_cpu(); if (use_ipi) { /* use an interprocessor interrupt to call SAL */ smp_call_function_single(cpu, sn_hwperf_call_sal, -- 2.30.2