On Wed, May 02, 2018 at 04:20:29PM -0700, Song Liu wrote:
> Currently, we cannot parse build_id in nmi context because of
> up_read(¤t->mm->mmap_sem), this makes stackmap with build_id
> less useful. This patch enables parsing build_id in nmi by putting
> the up_read() call in irq_work. To avoid me
Currently, we cannot parse build_id in nmi context because of
up_read(¤t->mm->mmap_sem), this makes stackmap with build_id
less useful. This patch enables parsing build_id in nmi by putting
the up_read() call in irq_work. To avoid memory allocation in nmi
context, we use per cpu variable for the ir
