Re: [PATCH 0/5] platform/x86/amd/pmf: Clean up undesirable function outlining

[Mario Limonciello <superm1@kernel.org>]

On 9/1/26 10:02, Rong Zhang wrote:
> The amd-pmf driver is notably bloated due to undesirable function
> outlining and linkage. Simple and dump helper functions as well as
> wrappers should really be static inline functions instead of global ones
> from the very beginning, or else they are prone to the overhead of
> function outlining and linkage, which bloats themselves and their
> callers.
> 
> The series converts all these helper functions and wrappers into static
> inline functions, and shrink the module (!CONFIG_AMD_PMF_DEBUG &&
> CONFIG_AMD_PMF_UTIL_SUPPORT) size by 1472 Bytes (GCC 16 -O2):
> 
>        text       data        bss      total filename	(before)
>       26810      31672       2768      61250 amd-pmf.ko
> 
>        text       data        bss      total filename	(after)
>       26046      30964       2768      59778 amd-pmf.ko
> 
> As for CONFIG_AMD_PMF_DEBUG && CONFIG_AMD_PMF_UTIL_SUPPORT builds, the
> module size is shrunk by 1187 Bytes:
> 
>        text       data        bss      total filename	(before)
>       34593      45500       2784      82877 amd-pmf.ko
> 
>        text       data        bss      total filename	(after)
>       33988      44918       2784      81690 amd-pmf.ko
> 
> This should also optimize the performance a little bit theoretically,
> though it's probably not very important on modern hardware anyway.
> 
> Signed-off-by: Rong Zhang <i@rong.moe>
> ---
> Rong Zhang (5):
>        platform/x86/amd/pmf: Inline !AMD_PMF_DEBUG stub
>        platform/x86/amd/pmf: Inline simple helper functions of Core Layer
>        platform/x86/amd/pmf: Inline simple helper function of SPS Layer
>        platform/x86/amd/pmf: Inline simple helper function of Smart PC TA interfaces
>        platform/x86/amd/pmf: Inline wrappers of ap{mf,ts}_if_call_store_buffer()
> 
>   drivers/platform/x86/amd/pmf/acpi.c |  76 +-----------------
>   drivers/platform/x86/amd/pmf/core.c |  22 ------
>   drivers/platform/x86/amd/pmf/pmf.h  | 150 +++++++++++++++++++++++++++++++-----
>   drivers/platform/x86/amd/pmf/spc.c  |  15 ----
>   drivers/platform/x86/amd/pmf/sps.c  |   5 --
>   5 files changed, 131 insertions(+), 137 deletions(-)
> ---
> base-commit: 9ffed84a24d60ec506d8961fe138f0baa92fdbd0
> change-id: 6f1861db-amd-pmf-fix-outlining-204546e884cf
> 
> Thanks,
> Rong

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>