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| author | Frederic Weisbecker <[email protected]> | 2011-03-31 01:35:24 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2011-03-31 11:02:55 +0000 |
| commit | 800cd25c12981c99e5401c3551ffffd99f1c6c85 (patch) | |
| tree | 8a3b1ef662a9190219aaaad842072495fcd70654 /drivers/misc/ibmasm/module.c | |
| parent | perf: Rebase max unprivileged mlock threshold on top of page size (diff) | |
| download | kernel-800cd25c12981c99e5401c3551ffffd99f1c6c85.tar.gz kernel-800cd25c12981c99e5401c3551ffffd99f1c6c85.zip | |
perf: mmap 512 kiB by default
The default setting of perf record is to mmap 128 pages if the user
did not override with -m.
However the page size may vary accross different architecture
settings, giving different default size between each.
Moreover the kernel side still has a default max number of mlocked
pages of 512 kiB + 1 page for unprivileged users. 128 + 1 pages
with page size > 4096 overlaps this threshold.
Thus, better adapt to this limitation and set the default number of
pages to fit those 512 kiB + 1 page.
Signed-off-by: Frederic Weisbecker <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Stephane Eranian <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/misc/ibmasm/module.c')
0 files changed, 0 insertions, 0 deletions