Re: [perfmon2] [PATCH] Add perfmon_debug kernel parameter for early startup messages
stephane eranian <eranian <at> googlemail.com>
2008-03-21 22:24:20 GMT
Robert,
Patch has been applied.
Thanks.
On Thu, Mar 6, 2008 at 2:53 PM, Robert Richter <robert.richter <at> amd.com> wrote:
> The patch allows it to enable debug messages in the early startup
> phase. Before, the recompilation of the Kernel with a modified debug
> init value was necessary.
>
> Signed-off-by: Robert Richter <robert.richter <at> amd.com>
> ---
> Documentation/kernel-parameters.txt | 3 +++
> perfmon/perfmon_sysfs.c | 8 ++++++++
> 2 files changed, 11 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> index c417877..fc39207 100644
> --- a/Documentation/kernel-parameters.txt
> +++ b/Documentation/kernel-parameters.txt
> <at> <at> -1401,6 +1401,9 <at> <at> and is between 256 and 4096 characters. It is defined in the file
> Format: { 0 | 1 }
> See arch/parisc/kernel/pdc_chassis.c
>
> + perfmon_debug [PERFMON] Enables Perfmon debug messages. Needed
> + to see traces of the early startup startup phase.
> +
> pf. [PARIDE]
> See Documentation/paride.txt.
>
> diff --git a/perfmon/perfmon_sysfs.c b/perfmon/perfmon_sysfs.c
> index 279c6ed..b8d6cca 100644
> --- a/perfmon/perfmon_sysfs.c
> +++ b/perfmon/perfmon_sysfs.c
> <at> <at> -277,6 +277,14 <at> <at> static ssize_t arg_size_store(void *info, const char *buf, size_t sz)
> return strnlen(buf, PAGE_SIZE);
> }
>
> +static int __init enable_debug(char *str)
> +{
> + pfm_controls.debug = 1;
> + PFM_INFO("debug output enabled\n");
> + return 1;
> +}
> +__setup("perfmon_debug", enable_debug);
> +
> /*
> * /sys/kernel/perfmon attributes
> */
> --
> 1.5.3.7
>
>
>
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