From a2693fe254e77055cb80571fa2d723021dd3aa1d Mon Sep 17 00:00:00 2001 From: Greentime Hu Date: Mon, 22 Jun 2020 16:47:25 -0700 Subject: RISC-V: Use a local variable instead of smp_processor_id() Store the smp_processor_id() in a local variable to save some pointer chasing. Signed-off-by: Greentime Hu Signed-off-by: Atish Patra Signed-off-by: Palmer Dabbelt --- arch/riscv/kernel/smpboot.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'arch/riscv/kernel') diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c index 4e9922790f6e..3e033e97dd08 100644 --- a/arch/riscv/kernel/smpboot.c +++ b/arch/riscv/kernel/smpboot.c @@ -146,6 +146,7 @@ void __init smp_cpus_done(unsigned int max_cpus) asmlinkage __visible void smp_callin(void) { struct mm_struct *mm = &init_mm; + unsigned int curr_cpuid = smp_processor_id(); if (!IS_ENABLED(CONFIG_RISCV_SBI)) clint_clear_ipi(cpuid_to_hartid_map(smp_processor_id())); @@ -155,9 +156,9 @@ asmlinkage __visible void smp_callin(void) current->active_mm = mm; trap_init(); - notify_cpu_starting(smp_processor_id()); - update_siblings_masks(smp_processor_id()); - set_cpu_online(smp_processor_id(), 1); + notify_cpu_starting(curr_cpuid); + update_siblings_masks(curr_cpuid); + set_cpu_online(curr_cpuid, 1); /* * Remote TLB flushes are ignored while the CPU is offline, so emit * a local TLB flush right now just in case. -- cgit v1.2.3-70-g09d2