[PATCH v5 3/7] arm: perf: support device with other non-irq resources

[Will Deacon]

Hi Ming Lei,

On Mon, Oct 24, 2011 at 03:45:55PM +0100, ming.lei at canonical.com wrote:
> From: Ming Lei <ming.lei at canonical.com>
> 
> omap4 may create device via hwmod, which can create resources
> automatically, so may include some non-irq resources.
> 
> This patch supports device with other non-irq resources.

I'd rather not do this in the Perf code since we're essentially dealing with
an artifact of the hwmod -> platform_device conversion.

> Signed-off-by: Ming Lei <ming.lei at canonical.com>
> ---
>  arch/arm/kernel/perf_event.c |    5 +++--
>  arch/arm/kernel/pmu.c        |   12 ++++++++++--
>  2 files changed, 13 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
> index f367780..d91dba2 100644
> --- a/arch/arm/kernel/perf_event.c
> +++ b/arch/arm/kernel/perf_event.c
> @@ -19,6 +19,7 @@
>  #include <linux/platform_device.h>
>  #include <linux/spinlock.h>
>  #include <linux/uaccess.h>
> +#include <linux/cpumask.h>
>  
>  #include <asm/cputype.h>
>  #include <asm/irq.h>
> @@ -414,7 +415,7 @@ armpmu_reserve_hardware(void)
>  		return -ENODEV;
>  	}
>  
> -	for (i = 0; i < pmu_device->num_resources; ++i) {
> +	for (i = 0; i < nr_cpu_ids; ++i) {
>  		irq = platform_get_irq(pmu_device, i);
>  		if (irq < 0)
>  			continue;

Hmm, I actually changed this code recently. Take a look:

https://github.com/wdeacon/linux-wd/blob/perf/system-pmus/arch/arm/kernel/perf_event.c

This should all be in for 3.2-rc1, so you can rebase then. If you still have
hwmod issues, please solve them outside of perf_event.c

> diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c
> index c53474f..0e9c908 100644
> --- a/arch/arm/kernel/pmu.c
> +++ b/arch/arm/kernel/pmu.c
> @@ -19,6 +19,7 @@
>  #include <linux/module.h>
>  #include <linux/of_device.h>
>  #include <linux/platform_device.h>
> +#include <linux/cpumask.h>

'fraid I've changed this file too!

https://github.com/wdeacon/linux-wd/blob/perf/system-pmus/arch/arm/kernel/pmu.c

Will