From: Steven Rostedt <rostedt@goodmis.org>
To: Vincent Donnefort <vdonnefort@google.com>
Cc: mhiramat@kernel.org, mathieu.desnoyers@efficios.com,
linux-trace-kernel@vger.kernel.org, maz@kernel.org,
oliver.upton@linux.dev, joey.gouly@arm.com,
suzuki.poulose@arm.com, yuzenghui@huawei.com,
kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
jstultz@google.com, qperret@google.com, will@kernel.org,
kernel-team@android.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 02/11] ring-buffer: Expose buffer_data_page material
Date: Thu, 6 Mar 2025 14:56:07 -0500 [thread overview]
Message-ID: <20250306145607.0aa91e22@gandalf.local.home> (raw)
In-Reply-To: <20250224121353.98697-3-vdonnefort@google.com>
On Mon, 24 Feb 2025 12:13:44 +0000
Vincent Donnefort <vdonnefort@google.com> wrote:
> @@ -61,11 +65,50 @@ enum ring_buffer_type {
> RINGBUF_TYPE_TIME_STAMP,
> };
>
> +#define TS_SHIFT 27
> +#define TS_MASK ((1ULL << TS_SHIFT) - 1)
> +#define TS_DELTA_TEST (~TS_MASK)
By moving this to include/linux you need to add a prefix to prevent name
space conflicts.
RB_TS_SHIFT
RB_TS_MASK
RB_TS_DELTA_TEST
-- Steve
> +
> +/*
> + * We need to fit the time_stamp delta into 27 bits.
> + */
> +static inline bool test_time_stamp(u64 delta)
> +{
> + return !!(delta & TS_DELTA_TEST);
> +}
> +
next prev parent reply other threads:[~2025-03-06 20:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-24 12:13 [PATCH 00/11] Tracefs support for pKVM Vincent Donnefort
2025-02-24 12:13 ` [PATCH 01/11] ring-buffer: Introduce ring-buffer remote Vincent Donnefort
2025-02-24 12:13 ` [PATCH 02/11] ring-buffer: Expose buffer_data_page material Vincent Donnefort
2025-03-06 19:56 ` Steven Rostedt [this message]
2025-02-24 12:13 ` [PATCH 03/11] KVM: arm64: Support unaligned fixmap in the nVHE hyp Vincent Donnefort
2025-02-24 12:13 ` [PATCH 04/11] KVM: arm64: Add clock support " Vincent Donnefort
2025-02-24 12:13 ` [PATCH 05/11] KVM: arm64: Add tracing support for the pKVM hyp Vincent Donnefort
2025-02-24 12:13 ` [PATCH 06/11] KVM: arm64: Add hyp tracing to tracefs Vincent Donnefort
2025-02-24 12:13 ` [PATCH 07/11] KVM: arm64: Add clock for hyp tracefs Vincent Donnefort
2025-02-24 12:13 ` [PATCH 08/11] KVM: arm64: Add raw interface " Vincent Donnefort
2025-02-24 12:13 ` [PATCH 09/11] KVM: arm64: Add trace " Vincent Donnefort
2025-02-24 12:13 ` [PATCH 10/11] KVM: arm64: Add support for hyp events Vincent Donnefort
2025-02-24 12:13 ` [PATCH 11/11] KVM: arm64: Add kselftest for tracefs hyp tracefs Vincent Donnefort
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