On Thu, Jul 27, 2023 at 09:25:06PM -0700, Randy Dunlap wrote: > > > On 7/27/23 20:35, Paul E. McKenney wrote: > > Hello! > > > > This series provides /proc interfaces parallel to /proc/cmdline that > > provide only those kernel boot parameters that were provided by the > > bootloader (/proc/cmdline_load) and only those parameters that were > > embedded in the kernel image (/proc/cmdline_image, in boot-config format). > > This is especially important when these parameters are presented to the > > boot loader by automation that might gather them from diverse sources, > > and also when a kexec-based reboot process pulls the kernel boot > > parameters from /proc. If such a reboot process uses /proc/cmdline, > > the kernel parameters from the image are replicated on every reboot, > > which can be frustrating when the new kernel has different embedded > > kernel boot parameters. > > > > Why put these in /proc? Because they is quite similar to /proc/cmdline, > > so it makes sense to put it in the same place that /proc/cmdline is > > located. > > > > 1. fs/proc: Add /proc/cmdline_load for boot loader arguments. > > > > 2. fs/proc: Add /proc/cmdline_image for embedded arguments. > > > > Thanx, Paul > > > > Hi Paul, > > This series seems to be missing updates to > Documentation/filesystems/proc.rst. > > Please add them. Good catch, thank you! I will fold the diff below into the three respective commits on my next rebase, but in the meantime, please let me know what you think. Thanx, Paul diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst index 7897a7dafcbc..98c43c5ef1ee 100644 --- a/Documentation/filesystems/proc.rst +++ b/Documentation/filesystems/proc.rst @@ -686,7 +686,10 @@ files are there, and which are missing. apm Advanced power management info buddyinfo Kernel memory allocator information (see text) (2.5) bus Directory containing bus specific information - cmdline Kernel command line + cmdline Kernel command line, both from bootloader and embedded + in the kernel image + cmdline_image Kernel command line obtained from boot loader (6.6) + cmdline_load Kernel command line obtained from kernel image (6.6) cpuinfo Info about the CPU devices Available devices (block and character) dma Used DMS channels
