From: Yu Chien Peter Lin <peterlin@andestech.com>
To: <acme@kernel.org>, <adrian.hunter@intel.com>,
<ajones@ventanamicro.com>, <alexander.shishkin@linux.intel.com>,
<andre.przywara@arm.com>, <anup@brainfault.org>,
<aou@eecs.berkeley.edu>, <atishp@atishpatra.org>,
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<evan@rivosinc.com>, <geert+renesas@glider.be>,
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<namhyung@kernel.org>, <palmer@dabbelt.com>,
<paul.walmsley@sifive.com>, <peterlin@andestech.com>,
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<rdunlap@infradead.org>, <robh+dt@kernel.org>,
<samuel@sholland.org>, <sunilvl@ventanamicro.com>,
<tglx@linutronix.de>, <tim609@andestech.com>, <uwu@icenowy.me>,
<wens@csie.org>, <will@kernel.org>, <inochiama@outlook.com>,
<unicorn_wang@outlook.com>, <wefu@redhat.com>
Cc: Atish Patra <atishp@rivosinc.com>
Subject: [PATCH v9 06/10] perf: RISC-V: Eliminate redundant interrupt enable/disable operations
Date: Thu, 22 Feb 2024 16:39:42 +0800 [thread overview]
Message-ID: <20240222083946.3977135-7-peterlin@andestech.com> (raw)
In-Reply-To: <20240222083946.3977135-1-peterlin@andestech.com>
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>
---
This patch allows us to drop unnecessary ALT_SBI_PMU_OVF_{DISABLE,ENABLE}
in the initial PATCH3 [1].
[1] https://patchwork.kernel.org/project/linux-riscv/patch/20230907021635.1002738-4-peterlin@andestech.com/
Changes v1 -> v2:
- New patch
Changes v2 -> v3:
- No change
Changes v3 -> v4:
- No change
Changes v4 -> v5:
- No change
Changes v5 -> v6:
- No change
Changes v6 -> v7:
- No change
Changes v7 -> v8:
- Include Reviewed-by tags from Atish
Changes v8 -> v9:
- No change
---
drivers/perf/riscv_pmu_sbi.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index 16acd4dcdb96..2edbc37abadf 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 */
--
2.34.1
next prev parent reply other threads:[~2024-02-22 8:41 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 8:39 [PATCH v9 00/10] Support Andes PMU extension Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 01/10] riscv: errata: Rename defines for Andes Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 02/10] irqchip/riscv-intc: Allow large non-standard interrupt number Yu Chien Peter Lin
2024-02-22 21:33 ` Thomas Gleixner
2024-02-23 9:44 ` [tip: irq/msi] " tip-bot2 for Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 03/10] irqchip/riscv-intc: Introduce Andes hart-level interrupt controller Yu Chien Peter Lin
2024-02-22 21:36 ` Thomas Gleixner
2024-02-23 8:49 ` Thomas Gleixner
2024-02-23 8:54 ` Thomas Gleixner
2024-02-23 9:06 ` Thomas Gleixner
2024-03-12 14:23 ` Palmer Dabbelt
2024-03-12 14:28 ` Thomas Gleixner
2024-02-23 9:43 ` [tip: irq/msi] " tip-bot2 for Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 04/10] dt-bindings: riscv: Add Andes interrupt controller compatible string Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 05/10] riscv: dts: renesas: r9a07g043f: Update compatible string to use Andes INTC Yu Chien Peter Lin
2024-02-26 12:27 ` Geert Uytterhoeven
2024-02-22 8:39 ` Yu Chien Peter Lin [this message]
2024-02-22 8:39 ` [PATCH v9 07/10] perf: RISC-V: Introduce Andes PMU to support perf event sampling Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 08/10] dt-bindings: riscv: Add Andes PMU extension description Yu Chien Peter Lin
2024-02-22 8:39 ` [PATCH v9 09/10] riscv: dts: renesas: Add Andes PMU extension for r9a07g043f Yu Chien Peter Lin
2024-02-26 12:28 ` Geert Uytterhoeven
2024-02-22 8:39 ` [PATCH v9 10/10] riscv: andes: Support specifying symbolic firmware and hardware raw events Yu Chien Peter Lin
2024-03-14 12:30 ` [PATCH v9 00/10] Support Andes PMU extension patchwork-bot+linux-riscv
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