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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-12-12 17:46:45 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-12-16 13:38:26 -0300 |
| commit | 8185e881f9fd9a2fa01f9d45616f8587f485f2a6 (patch) | |
| tree | 70a7d5dd8ffd2f8b1a360468bcfb7c6cdaad4c0e /tools/include | |
| parent | perf trace: Let the perf_evlist__mmap autosize the number of pages to use (diff) | |
| download | linux-dev-8185e881f9fd9a2fa01f9d45616f8587f485f2a6.tar.xz linux-dev-8185e881f9fd9a2fa01f9d45616f8587f485f2a6.zip | |
perf evlist: Do not use hard coded value for a mmap_pages default
So far what is in there by default is what we were using: 512KB + the
control page, but the admin may change that, and if it does to a smaller
value, all calls to tooling for non root users start failing, requiring
that the user manually set --mmap_pages/-m.
Use instead what is in /proc/sys/kernel/perf_event_mlock_kb.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-2f6mtm8xu3wo5lhkql6jdblh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/include')
0 files changed, 0 insertions, 0 deletions