Yo Florian, On Tue, May 30, 2023 at 01:19:55PM -0700, Florian Fainelli wrote: > From: Pierre Gondois <pierre.gondois@xxxxxxx> > > commit 3522340199cc060b70f0094e3039bdb43c3f6ee1 upstream > > fetch_cache_info() tries to get the number of cache leaves/levels > for each CPU in order to pre-allocate memory for cacheinfo struct. > Allocating this memory later triggers a: > 'BUG: sleeping function called from invalid context' > in PREEMPT_RT kernels. > > If there is no cache related information available in DT or ACPI, > fetch_cache_info() fails and an error message is printed: > 'Early cacheinfo failed, ret = ...' > > Not having cache information should be a valid configuration. > Remove the error message if fetch_cache_info() fails with -ENOENT. > > Suggested-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > Link: https://lore.kernel.org/all/20230404-hatred-swimmer-6fecdf33b57a@spud/ > Signed-off-by: Pierre Gondois <pierre.gondois@xxxxxxx> > Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > Link: https://lore.kernel.org/r/20230414081453.244787-4-pierre.gondois@xxxxxxx > Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx> > Signed-off-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx> How come this now needs a backport? Did the rest of the series get backported, but not this one since it has no fixes tag? Cheers, Conor.
