Linux prints this field when cache information is available. This field
is conditional (see arch/x86/kernel/cpu/proc.c:x86_cache_size()). It a
different meaning and implementation on each vendor. For example, as of
Linux 6.1.0 it returns LLC size on Intel and L2 size on AMD CPUs.
Even though usefullness of this field in its current implementation
debatable, some relatively popular software such as PyPy (as of 7.3.11)
relies on it and prints a warning if it is not available.
Linux prints these fields when the kernel is built with support for multiple
processors/cores (CONFIG_SMP), in
arch/x86/kernel/cpu/proc.c:show_cpuinfo_core().
Fixes#10205
PiperOrigin-RevId: 632621375
Adapted from cl/630063475.
This causes FUSE tests involving submounts to fail, because fuse.inode.Valid()
just returns false (fails revalidation) after the entry time expires, causing
all submounts to be unmounted; change it to perform revalidation instead, a la
Linux's fs/fuse/dir.c:fuse_dentry_revalidate(). This in turn requires that we
plumb the dentry's parent and name through kernfs.Inode.Valid().
PiperOrigin-RevId: 630476483
The code in GVisor relied on the process name not containing whitespace when
parsing /proc/*/stat. This CL fixes that by moving parsing to its own function,
implemented properly.
PiperOrigin-RevId: 511616209
Added a mechanism to query runtime sentry heap usage using procfs from inside
the sandbox. This may help with providing insight regarding sandbox hitting the
memory limit on the host despite reporting a lower application memory usage.
And added a test to `proc.cc`.
PiperOrigin-RevId: 470061488
All anonfs dentries are non-directories. So all FilesystemImpl
methods that would require an anonDentry to be a directory should
return ENOTDIR.
PiperOrigin-RevId: 455271653
gVisor bot
Andrei Vagin
Jamie Liu
Povilas Kanapickas
Jonathon Belotti
Shambhavi Srivastava
Andrei Vagin
Nicolas Lacasse
Chen Hui
Sergey Madaminov
Ayush Ranjan