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SubjectRe: [PATCH v4 1/3] x86/tsc_msr: Use named struct initializers
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Hi,

On 2/23/20 3:06 PM, Hans de Goede wrote:
> Use named struct initializers for the freq_desc struct-s initialization
> and change the "u8 msr_plat" to a "bool use_msr_plat" to make its meaning
> more clear instead of relying on a comment to explain it.
>
> Cc: stable@vger.kernel.org
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>

I believe that this series is ready for merging now? Can we
please get this merged?

Regards,

Hans


> ---
> arch/x86/kernel/tsc_msr.c | 28 ++++++++++++++++++----------
> 1 file changed, 18 insertions(+), 10 deletions(-)
>
> diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c
> index e0cbe4f2af49..5fa41ac3feb1 100644
> --- a/arch/x86/kernel/tsc_msr.c
> +++ b/arch/x86/kernel/tsc_msr.c
> @@ -22,10 +22,10 @@
> * read in MSR_PLATFORM_ID[12:8], otherwise in MSR_PERF_STAT[44:40].
> * Unfortunately some Intel Atom SoCs aren't quite compliant to this,
> * so we need manually differentiate SoC families. This is what the
> - * field msr_plat does.
> + * field use_msr_plat does.
> */
> struct freq_desc {
> - u8 msr_plat; /* 1: use MSR_PLATFORM_INFO, 0: MSR_IA32_PERF_STATUS */
> + bool use_msr_plat;
> u32 freqs[MAX_NUM_FREQS];
> };
>
> @@ -35,31 +35,39 @@ struct freq_desc {
> * by MSR based on SDM.
> */
> static const struct freq_desc freq_desc_pnw = {
> - 0, { 0, 0, 0, 0, 0, 99840, 0, 83200 }
> + .use_msr_plat = false,
> + .freqs = { 0, 0, 0, 0, 0, 99840, 0, 83200 },
> };
>
> static const struct freq_desc freq_desc_clv = {
> - 0, { 0, 133200, 0, 0, 0, 99840, 0, 83200 }
> + .use_msr_plat = false,
> + .freqs = { 0, 133200, 0, 0, 0, 99840, 0, 83200 },
> };
>
> static const struct freq_desc freq_desc_byt = {
> - 1, { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 }
> + .use_msr_plat = true,
> + .freqs = { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 },
> };
>
> static const struct freq_desc freq_desc_cht = {
> - 1, { 83300, 100000, 133300, 116700, 80000, 93300, 90000, 88900, 87500 }
> + .use_msr_plat = true,
> + .freqs = { 83300, 100000, 133300, 116700, 80000, 93300, 90000,
> + 88900, 87500 },
> };
>
> static const struct freq_desc freq_desc_tng = {
> - 1, { 0, 100000, 133300, 0, 0, 0, 0, 0 }
> + .use_msr_plat = true,
> + .freqs = { 0, 100000, 133300, 0, 0, 0, 0, 0 },
> };
>
> static const struct freq_desc freq_desc_ann = {
> - 1, { 83300, 100000, 133300, 100000, 0, 0, 0, 0 }
> + .use_msr_plat = true,
> + .freqs = { 83300, 100000, 133300, 100000, 0, 0, 0, 0 },
> };
>
> static const struct freq_desc freq_desc_lgm = {
> - 1, { 78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000 }
> + .use_msr_plat = true,
> + .freqs = { 78000, 78000, 78000, 78000, 78000, 78000, 78000, 78000 },
> };
>
> static const struct x86_cpu_id tsc_msr_cpu_ids[] = {
> @@ -91,7 +99,7 @@ unsigned long cpu_khz_from_msr(void)
> return 0;
>
> freq_desc = (struct freq_desc *)id->driver_data;
> - if (freq_desc->msr_plat) {
> + if (freq_desc->use_msr_plat) {
> rdmsr(MSR_PLATFORM_INFO, lo, hi);
> ratio = (lo >> 8) & 0xff;
> } else {
>

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