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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-04-22 19:35:18 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-04-22 19:35:18 +0300 |
| commit | 173b0b5b0e865348684c02bd9cb1d22b5d46e458 (patch) | |
| tree | a42a2cc8b724b94a9478aedfcbfabcec0197b246 /tools/perf/util/bpf_skel | |
| parent | 61ba075d9911d2a6db181fbb5602762a24d5d0a9 (diff) | |
| parent | ed30a4a51bb196781c8058073ea720133a65596f (diff) | |
| download | linux-173b0b5b0e865348684c02bd9cb1d22b5d46e458.tar.xz | |
Merge remote-tracking branch 'torvalds/master' into perf-tools-next
To pick up fixes sent via perf-tools, by Namhyung Kim.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/bpf_skel')
| -rw-r--r-- | tools/perf/util/bpf_skel/lock_contention.bpf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/util/bpf_skel/lock_contention.bpf.c b/tools/perf/util/bpf_skel/lock_contention.bpf.c index fb54bd38e7d0..d931a898c434 100644 --- a/tools/perf/util/bpf_skel/lock_contention.bpf.c +++ b/tools/perf/util/bpf_skel/lock_contention.bpf.c @@ -284,6 +284,7 @@ static inline __u32 check_lock_type(__u64 lock, __u32 flags) struct task_struct *curr; struct mm_struct___old *mm_old; struct mm_struct___new *mm_new; + struct sighand_struct *sighand; switch (flags) { case LCB_F_READ: /* rwsem */ @@ -305,7 +306,9 @@ static inline __u32 check_lock_type(__u64 lock, __u32 flags) break; case LCB_F_SPIN: /* spinlock */ curr = bpf_get_current_task_btf(); - if (&curr->sighand->siglock == (void *)lock) + sighand = curr->sighand; + + if (sighand && &sighand->siglock == (void *)lock) return LCD_F_SIGHAND_LOCK; break; default: |