From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave.Martin@arm.com (Dave Martin) Date: Tue, 1 Oct 2013 18:15:16 +0100 Subject: [PATCH v3 1/3] ARM: mcpm: Factor out logical-to-physical CPU translation In-Reply-To: <1380647718-9178-1-git-send-email-Dave.Martin@arm.com> References: <1380647718-9178-1-git-send-email-Dave.Martin@arm.com> Message-ID: <1380647718-9178-2-git-send-email-Dave.Martin@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch factors the logical-to-physical CPU translation out of mcpm_boot_secondary(), so that it can be reused elsewhere. Signed-off-by: Dave Martin Acked-by: Nicolas Pitre --- arch/arm/common/mcpm_platsmp.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/arch/arm/common/mcpm_platsmp.c b/arch/arm/common/mcpm_platsmp.c index 1bc34c7..c0c3cd7 100644 --- a/arch/arm/common/mcpm_platsmp.c +++ b/arch/arm/common/mcpm_platsmp.c @@ -19,14 +19,23 @@ #include #include +static void cpu_to_pcpu(unsigned int cpu, + unsigned int *pcpu, unsigned int *pcluster) +{ + unsigned int mpidr; + + mpidr = cpu_logical_map(cpu); + *pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + *pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); +} + static int mcpm_boot_secondary(unsigned int cpu, struct task_struct *idle) { - unsigned int mpidr, pcpu, pcluster, ret; + unsigned int pcpu, pcluster, ret; extern void secondary_startup(void); - mpidr = cpu_logical_map(cpu); - pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); - pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + cpu_to_pcpu(cpu, &pcpu, &pcluster); + pr_debug("%s: logical CPU %d is physical CPU %d cluster %d\n", __func__, cpu, pcpu, pcluster); -- 1.7.9.5