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| author | Namhyung Kim <[email protected]> | 2022-06-24 23:13:08 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2022-06-28 14:41:26 +0000 |
| commit | d6838ec44b4513280a3f43fcc402e246d543fb53 (patch) | |
| tree | cb12e505d57794c6937ffdd3ef28524e2e614e8c /scripts/clang-tools/gen_compile_commands.py | |
| parent | Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost (diff) | |
| download | kernel-d6838ec44b4513280a3f43fcc402e246d543fb53.tar.gz kernel-d6838ec44b4513280a3f43fcc402e246d543fb53.zip | |
perf offcpu: Fix build failure on old kernels
Old kernels have a 'struct task_struct' which contains a "state" field
and newer kernels have "__state" instead.
While the get_task_state() in the BPF code handles that in some way, it
assumed the current kernel has the new definition and it caused a build
error on old kernels.
We should not assume anything and access them carefully. Do not use
'task struct' directly access it instead using new and old definitions
in a row.
Fixes: edc41a1099c2d08c ("perf record: Enable off-cpu analysis with BPF")
Reported-by: Ian Rogers <[email protected]>
Signed-off-by: Namhyung Kim <[email protected]>
Cc: Blake Jones <[email protected]>
Cc: Hao Luo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Milian Wolff <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Cc: [email protected]
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'scripts/clang-tools/gen_compile_commands.py')
0 files changed, 0 insertions, 0 deletions