[PATCH v4 5/6] docs/about/deprecated: Document RISC-V "pmu-num" deprecation
This has been replaced by a "pmu-mask" property that provides much more flexibility. Signed-off-by: Rob Bradford <rbradford@rivosinc.com> Acked-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com> --- docs/about/deprecated.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 2febd2d12f..857b5d4fc4 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -405,6 +405,18 @@ Specifying the iSCSI password in plain text on the command line using the used instead, to refer to a ``--object secret...`` instance that provides a password via a file, or encrypted. +CPU device properties +''''''''''''''''''''' + +``pmu-num=n`` on RISC-V CPUs (since 8.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +In order to support more flexible counter configurations this has been replaced +by a ``pmu-mask`` property. If set of counters is continuous then the mask can +be calculated with ``((2 ^ n) - 1) << 3``. The least significant three bits +must be left clear. + + Backwards compatibility ----------------------- -- 2.41.0
On Thu, Oct 19, 2023 at 1:47 AM Rob Bradford <rbradford@rivosinc.com> wrote:
This has been replaced by a "pmu-mask" property that provides much more flexibility.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com> Acked-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair
--- docs/about/deprecated.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 2febd2d12f..857b5d4fc4 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -405,6 +405,18 @@ Specifying the iSCSI password in plain text on the command line using the used instead, to refer to a ``--object secret...`` instance that provides a password via a file, or encrypted.
+CPU device properties +''''''''''''''''''''' + +``pmu-num=n`` on RISC-V CPUs (since 8.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +In order to support more flexible counter configurations this has been replaced +by a ``pmu-mask`` property. If set of counters is continuous then the mask can +be calculated with ``((2 ^ n) - 1) << 3``. The least significant three bits +must be left clear. + + Backwards compatibility -----------------------
-- 2.41.0
On Sun, Oct 22, 2023 at 7:04 PM Alistair Francis <alistair23@gmail.com> wrote:
On Thu, Oct 19, 2023 at 1:47 AM Rob Bradford <rbradford@rivosinc.com> wrote:
This has been replaced by a "pmu-mask" property that provides much more flexibility.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com> Acked-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
--- docs/about/deprecated.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 2febd2d12f..857b5d4fc4 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -405,6 +405,18 @@ Specifying the iSCSI password in plain text on the command line using the used instead, to refer to a ``--object secret...`` instance that provides a password via a file, or encrypted.
+CPU device properties +''''''''''''''''''''' + +``pmu-num=n`` on RISC-V CPUs (since 8.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +In order to support more flexible counter configurations this has been replaced +by a ``pmu-mask`` property. If set of counters is continuous then the mask can +be calculated with ``((2 ^ n) - 1) << 3``. The least significant three bits +must be left clear. + + Backwards compatibility -----------------------
-- 2.41.0
Reviewed-by: Atish Patra <atishp@rivosinc.com>
participants (3)
-
Alistair Francis -
Atish Kumar Patra -
Rob Bradford