https://github.com/torvalds/linux
Revision eccb1b936363c62544bccb5bbb75afec9536f7e3 authored by Arnaldo Carvalho de Melo on 18 April 2018, 15:59:03 UTC, committed by Arnaldo Carvalho de Melo on 18 April 2018, 18:35:53 UTC
Since e145242ea0df ("syscalls/core, syscalls/x86: Clean up syscall stub naming convention") changed the main syscall function for 'epoll_pwait' to something other than the expected 'SyS_epoll_pwait the' 'perf test BPF' entries started failing, fix it by using something called from the main syscall function instead, 'epoll_wait', which should keep this test working in older kernels too. Before: # perf test BPF 40: BPF filter : 40.1: Basic BPF filtering : FAILED! 40.2: BPF pinning : Skip 40.3: BPF prologue generation : Skip 40.4: BPF relocation checker : Skip If we use -v for that test we see the problem: Probe point 'SyS_epoll_pwait' not found. After: # perf test BPF 40: BPF filter : 40.1: Basic BPF filtering : Ok 40.2: BPF pinning : Ok 40.3: BPF prologue generation : Ok 40.4: BPF relocation checker : Ok # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/r/tip-y24nmn70cs2am8jh4i344dng@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Tip revision: eccb1b936363c62544bccb5bbb75afec9536f7e3 authored by Arnaldo Carvalho de Melo on 18 April 2018, 15:59:03 UTC
perf test BPF: Fixup BPF test using epoll_pwait syscall function probe
perf test BPF: Fixup BPF test using epoll_pwait syscall function probe
Tip revision: eccb1b9
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