diff options
| author | Greentime Hu <greentime.hu@sifive.com> | 2020-06-22 16:47:25 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-06-29 15:23:28 -0700 |
| commit | a2693fe254e77055cb80571fa2d723021dd3aa1d (patch) | |
| tree | a2eec03282e4988814f8708c3bc0e1e3178d95eb /arch/riscv/kernel | |
| parent | 234e9d7a6200952264002b9ba808e7dfc559b0b2 (diff) | |
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 <greentime.hu@sifive.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/kernel')
| -rw-r--r-- | arch/riscv/kernel/smpboot.c | 7 |
1 files changed, 4 insertions, 3 deletions
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. |