diff options
| author | Yu Chien Peter Lin <peterlin@andestech.com> | 2024-02-22 16:39:42 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-03-12 07:13:15 -0700 |
| commit | ea0e0178e101c8d4662a0db7424df057b88e2712 (patch) | |
| tree | cf13785f09c5155169c9f04f77b65aca7bedf84a /drivers/perf | |
| parent | 95113bb705157f3518cec4ff0225a922507a0f8b (diff) | |
| download | linux-ea0e0178e101c8d4662a0db7424df057b88e2712.tar.gz | |
perf: RISC-V: Eliminate redundant interrupt enable/disable operations
The interrupt enable/disable operations are already performed by the
IRQ chip functions riscv_intc_irq_unmask()/riscv_intc_irq_mask() during
enable_percpu_irq()/disable_percpu_irq(). It can be done only once.
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20240222083946.3977135-7-peterlin@andestech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/riscv_pmu_sbi.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c index 16acd4dcdb96c..2edbc37abadfc 100644 --- a/drivers/perf/riscv_pmu_sbi.c +++ b/drivers/perf/riscv_pmu_sbi.c @@ -781,7 +781,6 @@ static int pmu_sbi_starting_cpu(unsigned int cpu, struct hlist_node *node) if (riscv_pmu_use_irq) { cpu_hw_evt->irq = riscv_pmu_irq; csr_clear(CSR_IP, BIT(riscv_pmu_irq_num)); - csr_set(CSR_IE, BIT(riscv_pmu_irq_num)); enable_percpu_irq(riscv_pmu_irq, IRQ_TYPE_NONE); } @@ -792,7 +791,6 @@ static int pmu_sbi_dying_cpu(unsigned int cpu, struct hlist_node *node) { if (riscv_pmu_use_irq) { disable_percpu_irq(riscv_pmu_irq); - csr_clear(CSR_IE, BIT(riscv_pmu_irq_num)); } /* Disable all counters access for user mode now */ |