2023-01-25 08:58:06

by Robert Richter

[permalink] [raw]
Subject: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

Only unsupported mailbox commands are reported in debug messages. A
list of enabled commands is useful too. Change debug messages to also
report the opcodes of enabled commands. Esp. if card initialization
fails there is no way to get this information from userland.

On that occasion also add missing trailing newlines.

Signed-off-by: Robert Richter <[email protected]>
---
v2:
* Changed message to "Opcode 0x%04x enabled\n". Updated patch
description accordingly.

drivers/cxl/core/mbox.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index a48ade466d6a..202d49dd9911 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)

if (!cmd) {
dev_dbg(cxlds->dev,
- "Opcode 0x%04x unsupported by driver", opcode);
+ "Opcode 0x%04x unsupported by driver\n", opcode);
continue;
}

set_bit(cmd->info.id, cxlds->enabled_cmds);
+ dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
}
}


base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2
--
2.30.2



2023-01-25 10:29:19

by Jonathan Cameron

[permalink] [raw]
Subject: Re: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

On Wed, 25 Jan 2023 09:57:28 +0100
Robert Richter <[email protected]> wrote:

> Only unsupported mailbox commands are reported in debug messages. A
> list of enabled commands is useful too. Change debug messages to also
> report the opcodes of enabled commands. Esp. if card initialization
> fails there is no way to get this information from userland.
>
> On that occasion also add missing trailing newlines.
>
> Signed-off-by: Robert Richter <[email protected]>
Fine with change in message
Reviewed-by: Jonathan Cameron <[email protected]>

> ---
> v2:
> * Changed message to "Opcode 0x%04x enabled\n". Updated patch
> description accordingly.
>
> drivers/cxl/core/mbox.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index a48ade466d6a..202d49dd9911 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
>
> if (!cmd) {
> dev_dbg(cxlds->dev,
> - "Opcode 0x%04x unsupported by driver", opcode);
> + "Opcode 0x%04x unsupported by driver\n", opcode);
> continue;
> }
>
> set_bit(cmd->info.id, cxlds->enabled_cmds);
> + dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
> }
> }
>
>
> base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2


2023-01-25 15:52:17

by Alison Schofield

[permalink] [raw]
Subject: Re: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

On Wed, Jan 25, 2023 at 09:57:28AM +0100, Robert Richter wrote:
> Only unsupported mailbox commands are reported in debug messages. A
> list of enabled commands is useful too. Change debug messages to also
> report the opcodes of enabled commands. Esp. if card initialization
> fails there is no way to get this information from userland.
>
> On that occasion also add missing trailing newlines.
>
> Signed-off-by: Robert Richter <[email protected]>
> ---
> v2:
> * Changed message to "Opcode 0x%04x enabled\n". Updated patch
> description accordingly.

Thanks Robert,
Reviewed-by: Alison Schofield <[email protected]>

>
> drivers/cxl/core/mbox.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
> index a48ade466d6a..202d49dd9911 100644
> --- a/drivers/cxl/core/mbox.c
> +++ b/drivers/cxl/core/mbox.c
> @@ -629,11 +629,12 @@ static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
>
> if (!cmd) {
> dev_dbg(cxlds->dev,
> - "Opcode 0x%04x unsupported by driver", opcode);
> + "Opcode 0x%04x unsupported by driver\n", opcode);
> continue;
> }
>
> set_bit(cmd->info.id, cxlds->enabled_cmds);
> + dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
> }
> }
>
>
> base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2
> --
> 2.30.2
>

2023-01-26 23:59:03

by Dan Williams

[permalink] [raw]
Subject: RE: [PATCH v2] cxl/mbox: Add debug messages for enabled mailbox commands

Robert Richter wrote:
> Only unsupported mailbox commands are reported in debug messages. A
> list of enabled commands is useful too. Change debug messages to also
> report the opcodes of enabled commands. Esp. if card initialization
> fails there is no way to get this information from userland.
>
> On that occasion also add missing trailing newlines.
>
> Signed-off-by: Robert Richter <[email protected]>
> ---
> v2:
> * Changed message to "Opcode 0x%04x enabled\n". Updated patch
> description accordingly.

Thanks Robert, replaced v1 with v2 in my tree. Should show up on
cxl/pending shortly.