Messages in this thread Patch in this message | | | Date | Mon, 25 May 2009 08:03:32 GMT | From | tip-bot for Ingo Molnar <> | Subject | [tip:perfcounters/core] perf_counter tools: increase limits, fix |
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Commit-ID: 85a9f9200226ddffc2ea50dae6a8df04c033ecd4 Gitweb: http://git.kernel.org/tip/85a9f9200226ddffc2ea50dae6a8df04c033ecd4 Author: Ingo Molnar <mingo@elte.hu> AuthorDate: Mon, 25 May 2009 09:59:50 +0200 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Mon, 25 May 2009 09:59:50 +0200
perf_counter tools: increase limits, fix
NR_CPUS and NR_COUNTERS goes up quadratic ... 1024x4096 was far too ambitious upper limit - go for 256x256 which is still plenty.
[ Impact: reduce perf tool memory consumption ]
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
--- Documentation/perf_counter/perf.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/perf_counter/perf.h b/Documentation/perf_counter/perf.h index a517683..5a2520b 100644 --- a/Documentation/perf_counter/perf.h +++ b/Documentation/perf_counter/perf.h @@ -61,8 +61,8 @@ sys_perf_counter_open(struct perf_counter_hw_event *hw_event_uptr, group_fd, flags); } -#define MAX_COUNTERS 1024 -#define MAX_NR_CPUS 4096 +#define MAX_COUNTERS 256 +#define MAX_NR_CPUS 256 #define EID(type, id) (((__u64)(type) << PERF_COUNTER_TYPE_SHIFT) | (id))
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