* Alexander Shishkin wrote:
> @@ -300,6 +300,7 @@ struct pmu {
> * struct pmu::capabilities flags
> */
> #define PERF_PMU_CAP_NO_INTERRUPT1
> +#define PERF_PMU_CAP_AUX_BROKEN_SG 2
Btw., I'd name it PERF_PMU_AUX_PHYSICAL_SG or so, and add a comment
before it that explains that such h
Peter Zijlstra writes:
> On Mon, May 19, 2014 at 03:57:37PM +0300, Alexander Shishkin wrote:
>> Peter Zijlstra writes:
>
>> > I'm not entirely thrilled to expose it to the PMU like this.. I realize
>> > you want this in order to get physically contiguous pages.
>>
>> Hmm, I guess we can have co
On Mon, May 19, 2014 at 03:57:37PM +0300, Alexander Shishkin wrote:
> Peter Zijlstra writes:
> > I'm not entirely thrilled to expose it to the PMU like this.. I realize
> > you want this in order to get physically contiguous pages.
>
> Hmm, I guess we can have code in perf core to carry out the
Peter Zijlstra writes:
> On Thu, May 15, 2014 at 06:08:30PM +0300, Alexander Shishkin wrote:
>> --- a/include/linux/perf_event.h
>> +++ b/include/linux/perf_event.h
>> @@ -252,6 +252,19 @@ struct pmu {
>> * flush branch stack on context-switches (needed in cpu-wide mode)
>> */
>>
On Thu, May 15, 2014 at 06:08:30PM +0300, Alexander Shishkin wrote:
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -252,6 +252,19 @@ struct pmu {
>* flush branch stack on context-switches (needed in cpu-wide mode)
>*/
> void (*flush_branch_stack)
Robert Richter writes:
> On 15.05.14 18:08:30, Alexander Shishkin wrote:
>> From: Peter Zijlstra
>>
>> This patch introduces "AUX space" in the perf mmap buffer, intended for
>> exporting high bandwidth data streams to userspace, such as instruction
>> flow traces.
>>
>> AUX space is a ring bu
On 15.05.14 18:08:30, Alexander Shishkin wrote:
> From: Peter Zijlstra
>
> This patch introduces "AUX space" in the perf mmap buffer, intended for
> exporting high bandwidth data streams to userspace, such as instruction
> flow traces.
>
> AUX space is a ring buffer, defined by aux_{offset,size}
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