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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4385d580f2
Even though we don't register the counters until the child is right about to exec(), we're still going to get at least a few events while the fork()'d child is still executing 'perf' and in particular we're going to get the MMAP events. We can't distinguish the ones in the newly executed process because the PID will be the same. One way to solve this would be to have a PERF_RECORD_EXEC event, and when this is seen 'perf' can flush it's map cache. We can't use PERF_RECORD_COMM since that's generated by other things, not just exec(). Actually, thinking about it some more, using PERF_RECORD_COMM might be a good enough approximation. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <1267196914-16238-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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| .. | ||
| bench | ||
| Documentation | ||
| scripts | ||
| util | ||
| .gitignore | ||
| builtin-annotate.c | ||
| builtin-bench.c | ||
| builtin-buildid-cache.c | ||
| builtin-buildid-list.c | ||
| builtin-diff.c | ||
| builtin-help.c | ||
| builtin-kmem.c | ||
| builtin-list.c | ||
| builtin-lock.c | ||
| builtin-probe.c | ||
| builtin-record.c | ||
| builtin-report.c | ||
| builtin-sched.c | ||
| builtin-stat.c | ||
| builtin-timechart.c | ||
| builtin-top.c | ||
| builtin-trace.c | ||
| builtin.h | ||
| command-list.txt | ||
| CREDITS | ||
| design.txt | ||
| Makefile | ||
| perf-archive.sh | ||
| perf.c | ||
| perf.h | ||