linux-kernel - Re: [PATCH v5 06/22] drivers/perf: riscv: Implement SBI PMU snapshot function

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Message-ID: <c33b4da9-5759-4a1a-844d-c6dbad028d12@rivosinc.com>
Date: Mon, 8 Apr 2024 17:21:53 -0700
From: Atish Patra <atishp@...osinc.com>
To: Andrew Jones <ajones@...tanamicro.com>
Cc: linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>,
 Anup Patel <anup@...infault.org>, Conor Dooley <conor.dooley@...rochip.com>,
 Ajay Kaher <akaher@...are.com>, Alexandre Ghiti <alexghiti@...osinc.com>,
 Alexey Makhalov <amakhalov@...are.com>, Juergen Gross <jgross@...e.com>,
 kvm-riscv@...ts.infradead.org, kvm@...r.kernel.org,
 linux-kselftest@...r.kernel.org, linux-riscv@...ts.infradead.org,
 Mark Rutland <mark.rutland@....com>, Palmer Dabbelt <palmer@...belt.com>,
 Paolo Bonzini <pbonzini@...hat.com>, Paul Walmsley
 <paul.walmsley@...ive.com>, Shuah Khan <shuah@...nel.org>,
 virtualization@...ts.linux.dev,
 VMware PV-Drivers Reviewers <pv-drivers@...are.com>,
 Will Deacon <will@...nel.org>, x86@...nel.org
Subject: Re: [PATCH v5 06/22] drivers/perf: riscv: Implement SBI PMU snapshot
 function

On 4/4/24 05:01, Andrew Jones wrote:
> On Wed, Apr 03, 2024 at 01:04:35AM -0700, Atish Patra wrote:
> ...
>> +static int pmu_sbi_snapshot_disable(void)
>> +{
>> +	struct sbiret ret;
>> +
>> +	ret = sbi_ecall(SBI_EXT_PMU, SBI_EXT_PMU_SNAPSHOT_SET_SHMEM, -1,
>> +			-1, 0, 0, 0, 0);
> 
> The "Rename the SBI_STA_SHMEM_DISABLE" patch should come before this
> patch so SBI_SHMEM_DISABLE can be used instead of the -1's here.
> 

Sure. Done.

> Thanks,
> drew