From: Dave Hansen <dave.hansen@intel.com>
To: "Liang, Kan" <kan.liang@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: acme@kernel.org, mingo@redhat.com, linux-kernel@vger.kernel.org,
mark.rutland@arm.com, alexander.shishkin@linux.intel.com,
jolsa@redhat.com, eranian@google.com, ak@linux.intel.com,
kirill.shutemov@linux.intel.com
Subject: Re: [PATCH V6 01/16] perf/core: Add PERF_SAMPLE_DATA_PAGE_SIZE
Date: Wed, 12 Aug 2020 06:53:39 -0700 [thread overview]
Message-ID: <28c9fe5b-a19f-2d12-cf5a-83b1b36c37ed@intel.com> (raw)
In-Reply-To: <7a37a83a-fd30-3387-98b2-e3d23d36f69c@linux.intel.com>
On 8/12/20 6:39 AM, Liang, Kan wrote:
> I searched the vma_mmu_pagesize(). It seems that PowerPC is the only
> one that defines a 'strong' function. In other words, the MMUPageSize
> and KerelPageSize are the same for X86. However, it seems not true
> for the above compound page cases. Is it a bug for smaps? Or am I
> missed anything?
__weak unsigned long vma_mmu_pagesize(struct vm_area_struct *vma)
{
return vma_kernel_pagesize(vma);
}
unsigned long vma_kernel_pagesize(struct vm_area_struct *vma)
{
if (vma->vm_ops && vma->vm_ops->pagesize)
return vma->vm_ops->pagesize(vma);
return PAGE_SIZE;
}
It can be overridden with vm_ops too, not just a weak symbol.
next prev parent reply other threads:[~2020-08-12 13:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 21:24 [PATCH V6 00/16] Add the page size in the perf record Kan Liang
2020-08-10 21:24 ` [PATCH V6 01/16] perf/core: Add PERF_SAMPLE_DATA_PAGE_SIZE Kan Liang
2020-08-10 21:35 ` Peter Zijlstra
2020-08-10 21:39 ` Peter Zijlstra
2020-08-10 22:36 ` Liang, Kan
2020-08-10 21:47 ` Dave Hansen
2020-08-10 22:38 ` Liang, Kan
2020-08-10 22:47 ` Peter Zijlstra
2020-08-12 13:39 ` Liang, Kan
2020-08-12 13:53 ` Dave Hansen [this message]
2020-08-10 21:24 ` [PATCH V6 02/16] perf/x86/intel: Support PERF_SAMPLE_DATA_PAGE_SIZE Kan Liang
2020-08-10 21:40 ` Peter Zijlstra
2020-08-10 22:36 ` Liang, Kan
2020-08-10 21:24 ` [PATCH V6 03/16] perf/core: Add support for PERF_SAMPLE_CODE_PAGE_SIZE Kan Liang
2020-08-10 21:41 ` Peter Zijlstra
2020-08-10 22:37 ` Liang, Kan
2020-08-10 22:44 ` Peter Zijlstra
2020-08-10 21:24 ` [PATCH V6 04/16] tools headers UAPI: Update tools's copy of linux/perf_event.h Kan Liang
2020-08-10 21:24 ` [PATCH V6 05/16] perf record: Support new sample type for data page size Kan Liang
2020-08-10 21:24 ` [PATCH V6 06/16] perf script: Use ULL for enum perf_output_field Kan Liang
2020-08-12 12:21 ` Arnaldo Carvalho de Melo
2020-08-12 13:42 ` Liang, Kan
2020-08-10 21:24 ` [PATCH V6 07/16] perf script: Support data page size Kan Liang
2020-08-10 21:24 ` [PATCH V6 08/16] perf sort: Add sort option for " Kan Liang
2020-08-10 21:24 ` [PATCH V6 09/16] perf mem: Factor out a function to generate sort order Kan Liang
2020-08-10 21:24 ` [PATCH V6 10/16] perf mem: Clean up output format Kan Liang
2020-08-10 21:24 ` [PATCH V6 11/16] perf mem: Support data page size Kan Liang
2020-08-10 21:24 ` [PATCH V6 12/16] perf test: Add test case for PERF_SAMPLE_DATA_PAGE_SIZE Kan Liang
2020-08-10 21:24 ` [PATCH V6 13/16] perf tools: Add support for PERF_SAMPLE_CODE_PAGE_SIZE Kan Liang
2020-08-10 21:24 ` [PATCH V6 14/16] perf script: " Kan Liang
2020-08-10 21:24 ` [PATCH V6 15/16] perf report: " Kan Liang
2020-08-10 21:24 ` [PATCH V6 16/16] perf test: Add test case " Kan Liang
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