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Peter Zijlstra 974802eaa1 perf_counter: Add forward/backward attribute ABI compatibility ... Provide for means of extending the perf_counter_attr in a 'natural' way. We allow growing the structure by appending fields at the end by specifying the full structure size inside it. When a new kernel sees a smaller (old) structure, it will 0 pad the tail. When an old kernel sees a larger (new) structure, it will verify the tail consists of 0s, otherwise fail. If we fail due to a size-mismatch, we return -E2BIG and write the kernel's native attribe size back into the provided structure. Furthermore, add some attribute verification, so that we'll fail counter creation when unknown bits are present (PERF_SAMPLE, PERF_FORMAT, or in the __reserved fields). (This ABI detail is introduced while keeping the existing syscall ABI.) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>		16 years ago
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Documentation	…
util	…
.gitignore	…
Makefile	…
builtin-annotate.c	…
builtin-help.c	…
builtin-list.c	…
builtin-record.c	…
builtin-report.c	…
builtin-stat.c	…
builtin-top.c	…
builtin.h	…
command-list.txt	…
design.txt	perf_counter: Standardize event names	16 years ago
perf.c	…
perf.h	perf_counter: Add forward/backward attribute ABI compatibility	16 years ago