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| author |   Stephane Eranian <eranian@google.com> | 2020-10-01 06:57:49 -0700 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2020-10-29 11:00:39 +0100 |
| commit | 995f088efebe1eba0282a6ffa12411b37f8990c2 (patch) | |
| tree | 9e3185b05657e50aa991790dde6d74ba4dd8ee02 /crypto/rmd128.c | |
| parent | powerpc/perf: Support PERF_SAMPLE_DATA_PAGE_SIZE (diff) | |
| download | linux-dev-995f088efebe1eba0282a6ffa12411b37f8990c2.tar.xz linux-dev-995f088efebe1eba0282a6ffa12411b37f8990c2.zip | |
perf/core: Add support for PERF_SAMPLE_CODE_PAGE_SIZE
When studying code layout, it is useful to capture the page size of the
sampled code address.
Add a new sample type for code page size.
The new sample type requires collecting the ip. The code page size can
be calculated from the NMI-safe perf_get_page_size().
For large PEBS, it's very unlikely that the mapping is gone for the
earlier PEBS records. Enable the feature for the large PEBS. The worst
case is that page-size '0' is returned.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201001135749.2804-5-kan.liang@linux.intel.com
Diffstat (limited to 'crypto/rmd128.c')
0 files changed, 0 insertions, 0 deletions