diff mbox

[v3,2/5] intel_pstate: convert to use acpi_match_platform_list()

Message ID 20170818194644.14538-3-toshi.kani@hpe.com (mailing list archive)
State Changes Requested, archived
Headers show

Commit Message

Kani, Toshi Aug. 18, 2017, 7:46 p.m. UTC
Convert to use acpi_match_platform_list() for the platform check.
There is no change in functionality.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
---
 drivers/cpufreq/intel_pstate.c |   64 ++++++++++++++++------------------------
 1 file changed, 25 insertions(+), 39 deletions(-)

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Comments

srinivas pandruvada Aug. 21, 2017, 5:53 p.m. UTC | #1
On Fri, 2017-08-18 at 13:46 -0600, Toshi Kani wrote:
> Convert to use acpi_match_platform_list() for the platform check.
> There is no change in functionality.
> 
> Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> Cc: Len Brown <lenb@kernel.org>
> Cc: Borislav Petkov <bp@alien8.de>
Can't test but the change itself is OK.

Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>

> ---
>  drivers/cpufreq/intel_pstate.c |   64 ++++++++++++++++------------
> ------------
>  1 file changed, 25 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/cpufreq/intel_pstate.c
> b/drivers/cpufreq/intel_pstate.c
> index 65ee4fc..ad713cd 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -2466,39 +2466,31 @@ enum {
>  	PPC,
>  };
>  
> -struct hw_vendor_info {
> -	u16  valid;
> -	char oem_id[ACPI_OEM_ID_SIZE];
> -	char oem_table_id[ACPI_OEM_TABLE_ID_SIZE];
> -	int  oem_pwr_table;
> -};
> -
>  /* Hardware vendor-specific info that has its own power management
> modes */
> -static struct hw_vendor_info vendor_info[] __initdata = {
> -	{1, "HP    ", "ProLiant", PSS},
> -	{1, "ORACLE", "X4-2    ", PPC},
> -	{1, "ORACLE", "X4-2L   ", PPC},
> -	{1, "ORACLE", "X4-2B   ", PPC},
> -	{1, "ORACLE", "X3-2    ", PPC},
> -	{1, "ORACLE", "X3-2L   ", PPC},
> -	{1, "ORACLE", "X3-2B   ", PPC},
> -	{1, "ORACLE", "X4470M2 ", PPC},
> -	{1, "ORACLE", "X4270M3 ", PPC},
> -	{1, "ORACLE", "X4270M2 ", PPC},
> -	{1, "ORACLE", "X4170M2 ", PPC},
> -	{1, "ORACLE", "X4170 M3", PPC},
> -	{1, "ORACLE", "X4275 M3", PPC},
> -	{1, "ORACLE", "X6-2    ", PPC},
> -	{1, "ORACLE", "Sudbury ", PPC},
> -	{0, "", ""},
> +static struct acpi_platform_list plat_info[] __initdata = {
> +	{"HP    ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0,
> PSS},
> +	{"ORACLE", "X4-2    ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4-2L   ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4-2B   ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X3-2    ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X3-2L   ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X3-2B   ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "X6-2    ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, 0,
> PPC},
> +	{ } /* End */
>  };
>  
>  static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
>  {
> -	struct acpi_table_header hdr;
> -	struct hw_vendor_info *v_info;
>  	const struct x86_cpu_id *id;
>  	u64 misc_pwr;
> +	int idx;
>  
>  	id = x86_match_cpu(intel_pstate_cpu_oob_ids);
>  	if (id) {
> @@ -2507,21 +2499,15 @@ static bool __init
> intel_pstate_platform_pwr_mgmt_exists(void)
>  			return true;
>  	}
>  
> -	if (acpi_disabled ||
> -	    ACPI_FAILURE(acpi_get_table_header(ACPI_SIG_FADT, 0,
> &hdr)))
> +	idx = acpi_match_platform_list(plat_info);
> +	if (idx < 0)
>  		return false;
>  
> -	for (v_info = vendor_info; v_info->valid; v_info++) {
> -		if (!strncmp(hdr.oem_id, v_info->oem_id,
> ACPI_OEM_ID_SIZE) &&
> -			!strncmp(hdr.oem_table_id, v_info-
> >oem_table_id,
> -						ACPI_OEM_TABLE_ID_SI
> ZE))
> -			switch (v_info->oem_pwr_table) {
> -			case PSS:
> -				return intel_pstate_no_acpi_pss();
> -			case PPC:
> -				return intel_pstate_has_acpi_ppc()
> &&
> -					(!force_load);
> -			}
> +	switch (plat_info[idx].data) {
> +	case PSS:
> +		return intel_pstate_no_acpi_pss();
> +	case PPC:
> +		return intel_pstate_has_acpi_ppc() && !force_load;
>  	}
>  
>  	return false;
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Borislav Petkov Aug. 23, 2017, 3:46 p.m. UTC | #2
On Fri, Aug 18, 2017 at 01:46:41PM -0600, Toshi Kani wrote:
> Convert to use acpi_match_platform_list() for the platform check.
> There is no change in functionality.
> 
> Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
> Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> Cc: Len Brown <lenb@kernel.org>
> Cc: Borislav Petkov <bp@alien8.de>
> ---
>  drivers/cpufreq/intel_pstate.c |   64 ++++++++++++++++------------------------
>  1 file changed, 25 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index 65ee4fc..ad713cd 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -2466,39 +2466,31 @@ enum {
>  	PPC,
>  };
>  
> -struct hw_vendor_info {
> -	u16  valid;
> -	char oem_id[ACPI_OEM_ID_SIZE];
> -	char oem_table_id[ACPI_OEM_TABLE_ID_SIZE];
> -	int  oem_pwr_table;
> -};
> -
>  /* Hardware vendor-specific info that has its own power management modes */
> -static struct hw_vendor_info vendor_info[] __initdata = {
> -	{1, "HP    ", "ProLiant", PSS},
> -	{1, "ORACLE", "X4-2    ", PPC},
> -	{1, "ORACLE", "X4-2L   ", PPC},
> -	{1, "ORACLE", "X4-2B   ", PPC},
> -	{1, "ORACLE", "X3-2    ", PPC},
> -	{1, "ORACLE", "X3-2L   ", PPC},
> -	{1, "ORACLE", "X3-2B   ", PPC},
> -	{1, "ORACLE", "X4470M2 ", PPC},
> -	{1, "ORACLE", "X4270M3 ", PPC},
> -	{1, "ORACLE", "X4270M2 ", PPC},
> -	{1, "ORACLE", "X4170M2 ", PPC},
> -	{1, "ORACLE", "X4170 M3", PPC},
> -	{1, "ORACLE", "X4275 M3", PPC},
> -	{1, "ORACLE", "X6-2    ", PPC},
> -	{1, "ORACLE", "Sudbury ", PPC},
> -	{0, "", ""},
> +static struct acpi_platform_list plat_info[] __initdata = {
> +	{"HP    ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0, PSS},

Btw, why is that ACPI_SIG_FADT's description not "FADT" ?

#define ACPI_SIG_FADT           "FACP"  /* Fixed ACPI Description Table */

More ACPI fun? I don't think I can take any more fun.

Oh well,

Reviewed-by: Borislav Petkov <bp@suse.de>
Kani, Toshi Aug. 23, 2017, 3:56 p.m. UTC | #3
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diff mbox

Patch

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 65ee4fc..ad713cd 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2466,39 +2466,31 @@  enum {
 	PPC,
 };
 
-struct hw_vendor_info {
-	u16  valid;
-	char oem_id[ACPI_OEM_ID_SIZE];
-	char oem_table_id[ACPI_OEM_TABLE_ID_SIZE];
-	int  oem_pwr_table;
-};
-
 /* Hardware vendor-specific info that has its own power management modes */
-static struct hw_vendor_info vendor_info[] __initdata = {
-	{1, "HP    ", "ProLiant", PSS},
-	{1, "ORACLE", "X4-2    ", PPC},
-	{1, "ORACLE", "X4-2L   ", PPC},
-	{1, "ORACLE", "X4-2B   ", PPC},
-	{1, "ORACLE", "X3-2    ", PPC},
-	{1, "ORACLE", "X3-2L   ", PPC},
-	{1, "ORACLE", "X3-2B   ", PPC},
-	{1, "ORACLE", "X4470M2 ", PPC},
-	{1, "ORACLE", "X4270M3 ", PPC},
-	{1, "ORACLE", "X4270M2 ", PPC},
-	{1, "ORACLE", "X4170M2 ", PPC},
-	{1, "ORACLE", "X4170 M3", PPC},
-	{1, "ORACLE", "X4275 M3", PPC},
-	{1, "ORACLE", "X6-2    ", PPC},
-	{1, "ORACLE", "Sudbury ", PPC},
-	{0, "", ""},
+static struct acpi_platform_list plat_info[] __initdata = {
+	{"HP    ", "ProLiant", 0, ACPI_SIG_FADT, all_versions, 0, PSS},
+	{"ORACLE", "X4-2    ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4-2L   ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4-2B   ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X3-2    ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X3-2L   ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X3-2B   ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4470M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4270M3 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4270M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4170M2 ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4170 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X4275 M3", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "X6-2    ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{"ORACLE", "Sudbury ", 0, ACPI_SIG_FADT, all_versions, 0, PPC},
+	{ } /* End */
 };
 
 static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
 {
-	struct acpi_table_header hdr;
-	struct hw_vendor_info *v_info;
 	const struct x86_cpu_id *id;
 	u64 misc_pwr;
+	int idx;
 
 	id = x86_match_cpu(intel_pstate_cpu_oob_ids);
 	if (id) {
@@ -2507,21 +2499,15 @@  static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
 			return true;
 	}
 
-	if (acpi_disabled ||
-	    ACPI_FAILURE(acpi_get_table_header(ACPI_SIG_FADT, 0, &hdr)))
+	idx = acpi_match_platform_list(plat_info);
+	if (idx < 0)
 		return false;
 
-	for (v_info = vendor_info; v_info->valid; v_info++) {
-		if (!strncmp(hdr.oem_id, v_info->oem_id, ACPI_OEM_ID_SIZE) &&
-			!strncmp(hdr.oem_table_id, v_info->oem_table_id,
-						ACPI_OEM_TABLE_ID_SIZE))
-			switch (v_info->oem_pwr_table) {
-			case PSS:
-				return intel_pstate_no_acpi_pss();
-			case PPC:
-				return intel_pstate_has_acpi_ppc() &&
-					(!force_load);
-			}
+	switch (plat_info[idx].data) {
+	case PSS:
+		return intel_pstate_no_acpi_pss();
+	case PPC:
+		return intel_pstate_has_acpi_ppc() && !force_load;
 	}
 
 	return false;