Commit 78d683e838a60ec4ba4591cca4364cba84a9e626 added vm_ops->name as an alternative to arch_vma_name but did not update perf events use of arch_vma_name().
Commit a62c34bd2a8a3f159945becd57401e478818d51c removed "[vdso]" as a name returned by the x86 version of arch_vma_name(), so the perf event for the vdso mapping no longer had the correct name. Fix by making perf events also use vm_ops->name. Signed-off-by: Adrian Hunter <[email protected]> --- kernel/events/core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index a33d9a2b..a8740d1 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5266,6 +5266,12 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) goto got_name; } else { + if (vma->vm_ops && vma->vm_ops->name) { + name = (char *)vma->vm_ops->name(vma); + if (name) + goto cpy_name; + } + name = (char *)arch_vma_name(vma); if (name) goto cpy_name; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
