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From: Yazen Ghannam <Yazen.Ghannam@amd.com>
To: x86@kernel.org
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>,
	linux-kernel@vger.kernel.org,
	Smita.KoralahalliChannabasappa@amd.com,
	linux-edac@vger.kernel.org, puwen@hygon.cn, kim.phillips@amd.com,
	thomas.lendacky@amd.com, wei.huang2@amd.com
Subject: [PATCH 2/4] x86/CPU/AMD: Remove amd_get_nb_id()
Date: Mon,  9 Nov 2020 21:06:57 +0000	[thread overview]
Message-ID: <20201109210659.754018-3-Yazen.Ghannam@amd.com> (raw)
In-Reply-To: <20201109210659.754018-1-Yazen.Ghannam@amd.com>

From: Yazen Ghannam <yazen.ghannam@amd.com>

The Last Level Cache ID is returned by amd_get_nb_id(). In practice,
this value is the same as the AMD NodeId for callers of this function.
The NodeId is saved in struct cpuinfo_x86.cpu_die_id.

Replace calls to amd_get_nb_id() with the logical CPU's cpu_die_id and
remove the function.

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
---
 arch/x86/events/amd/core.c       | 2 +-
 arch/x86/include/asm/processor.h | 2 --
 arch/x86/kernel/amd_nb.c         | 4 ++--
 arch/x86/kernel/cpu/amd.c        | 6 ------
 arch/x86/kernel/cpu/cacheinfo.c  | 2 +-
 arch/x86/kernel/cpu/mce/amd.c    | 4 ++--
 arch/x86/kernel/cpu/mce/inject.c | 4 ++--
 drivers/edac/amd64_edac.c        | 4 ++--
 drivers/edac/mce_amd.c           | 2 +-
 9 files changed, 11 insertions(+), 19 deletions(-)

diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c
index 39eb276d0277..2c1791c4a518 100644
--- a/arch/x86/events/amd/core.c
+++ b/arch/x86/events/amd/core.c
@@ -538,7 +538,7 @@ static void amd_pmu_cpu_starting(int cpu)
 	if (!x86_pmu.amd_nb_constraints)
 		return;
 
-	nb_id = amd_get_nb_id(cpu);
+	nb_id = topology_die_id(cpu);
 	WARN_ON_ONCE(nb_id == BAD_APICID);
 
 	for_each_online_cpu(i) {
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 60dbcdcb833f..a411466a6e74 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -815,10 +815,8 @@ extern int set_tsc_mode(unsigned int val);
 DECLARE_PER_CPU(u64, msr_misc_features_shadow);
 
 #ifdef CONFIG_CPU_SUP_AMD
-extern u16 amd_get_nb_id(int cpu);
 extern u32 amd_get_nodes_per_socket(void);
 #else
-static inline u16 amd_get_nb_id(int cpu)		{ return 0; }
 static inline u32 amd_get_nodes_per_socket(void)	{ return 0; }
 #endif
 
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c
index 18f6b7c4bd79..b4396952c9a6 100644
--- a/arch/x86/kernel/amd_nb.c
+++ b/arch/x86/kernel/amd_nb.c
@@ -384,7 +384,7 @@ struct resource *amd_get_mmconfig_range(struct resource *res)
 
 int amd_get_subcaches(int cpu)
 {
-	struct pci_dev *link = node_to_amd_nb(amd_get_nb_id(cpu))->link;
+	struct pci_dev *link = node_to_amd_nb(topology_die_id(cpu))->link;
 	unsigned int mask;
 
 	if (!amd_nb_has_feature(AMD_NB_L3_PARTITIONING))
@@ -398,7 +398,7 @@ int amd_get_subcaches(int cpu)
 int amd_set_subcaches(int cpu, unsigned long mask)
 {
 	static unsigned int reset, ban;
-	struct amd_northbridge *nb = node_to_amd_nb(amd_get_nb_id(cpu));
+	struct amd_northbridge *nb = node_to_amd_nb(topology_die_id(cpu));
 	unsigned int reg;
 	int cuid;
 
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 2f1fbd8150af..1f71c7616917 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -424,12 +424,6 @@ static void amd_detect_ppin(struct cpuinfo_x86 *c)
 	clear_cpu_cap(c, X86_FEATURE_AMD_PPIN);
 }
 
-u16 amd_get_nb_id(int cpu)
-{
-	return per_cpu(cpu_llc_id, cpu);
-}
-EXPORT_SYMBOL_GPL(amd_get_nb_id);
-
 u32 amd_get_nodes_per_socket(void)
 {
 	return nodes_per_socket;
diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index f9ac682e75e7..3ca9be482a9e 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -580,7 +580,7 @@ static void amd_init_l3_cache(struct _cpuid4_info_regs *this_leaf, int index)
 	if (index < 3)
 		return;
 
-	node = amd_get_nb_id(smp_processor_id());
+	node = topology_die_id(smp_processor_id());
 	this_leaf->nb = node_to_amd_nb(node);
 	if (this_leaf->nb && !this_leaf->nb->l3_cache.indices)
 		amd_calc_l3_indices(this_leaf->nb);
diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c
index 0c6b02dd744c..e486f96b3cb3 100644
--- a/arch/x86/kernel/cpu/mce/amd.c
+++ b/arch/x86/kernel/cpu/mce/amd.c
@@ -1341,7 +1341,7 @@ static int threshold_create_bank(struct threshold_bank **bp, unsigned int cpu,
 		return -ENODEV;
 
 	if (is_shared_bank(bank)) {
-		nb = node_to_amd_nb(amd_get_nb_id(cpu));
+		nb = node_to_amd_nb(topology_die_id(cpu));
 
 		/* threshold descriptor already initialized on this node? */
 		if (nb && nb->bank4) {
@@ -1445,7 +1445,7 @@ static void threshold_remove_bank(struct threshold_bank *bank)
 		 * The last CPU on this node using the shared bank is going
 		 * away, remove that bank now.
 		 */
-		nb = node_to_amd_nb(amd_get_nb_id(smp_processor_id()));
+		nb = node_to_amd_nb(topology_die_id(smp_processor_id()));
 		nb->bank4 = NULL;
 	}
 
diff --git a/arch/x86/kernel/cpu/mce/inject.c b/arch/x86/kernel/cpu/mce/inject.c
index 3a44346f2276..7b360731fc2d 100644
--- a/arch/x86/kernel/cpu/mce/inject.c
+++ b/arch/x86/kernel/cpu/mce/inject.c
@@ -522,8 +522,8 @@ static void do_inject(void)
 	if (boot_cpu_has(X86_FEATURE_AMD_DCM) &&
 	    b == 4 &&
 	    boot_cpu_data.x86 < 0x17) {
-		toggle_nb_mca_mst_cpu(amd_get_nb_id(cpu));
-		cpu = get_nbc_for_node(amd_get_nb_id(cpu));
+		toggle_nb_mca_mst_cpu(topology_die_id(cpu));
+		cpu = get_nbc_for_node(topology_die_id(cpu));
 	}
 
 	get_online_cpus();
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 3bac76efd3f6..4e36d8494563 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1133,7 +1133,7 @@ static int k8_early_channel_count(struct amd64_pvt *pvt)
 /* On F10h and later ErrAddr is MC4_ADDR[47:1] */
 static u64 get_error_address(struct amd64_pvt *pvt, struct mce *m)
 {
-	u16 mce_nid = amd_get_nb_id(m->extcpu);
+	u16 mce_nid = topology_die_id(m->extcpu);
 	struct mem_ctl_info *mci;
 	u8 start_bit = 1;
 	u8 end_bit   = 47;
@@ -3038,7 +3038,7 @@ static void get_cpus_on_this_dct_cpumask(struct cpumask *mask, u16 nid)
 	int cpu;
 
 	for_each_online_cpu(cpu)
-		if (amd_get_nb_id(cpu) == nid)
+		if (topology_die_id(cpu) == nid)
 			cpumask_set_cpu(cpu, mask);
 }
 
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index 7f28edb070bd..85095e3902ec 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -869,7 +869,7 @@ static void decode_mc3_mce(struct mce *m)
 static void decode_mc4_mce(struct mce *m)
 {
 	unsigned int fam = x86_family(m->cpuid);
-	int node_id = amd_get_nb_id(m->extcpu);
+	int node_id = topology_die_id(m->extcpu);
 	u16 ec = EC(m->status);
 	u8 xec = XEC(m->status, 0x1f);
 	u8 offset = 0;
-- 
2.25.1


  parent reply	other threads:[~2020-11-09 21:06 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-09 21:06 [PATCH 0/4] Set and use cpu_die_id on AMD-based systems Yazen Ghannam
2020-11-09 21:06 ` [PATCH 1/4] x86/CPU/AMD: Save AMD NodeId as cpu_die_id Yazen Ghannam
2020-11-19 11:29   ` [tip: x86/cpu] " tip-bot2 for Yazen Ghannam
2020-11-09 21:06 ` Yazen Ghannam [this message]
2020-11-19 11:29   ` [tip: x86/cpu] x86/CPU/AMD: Remove amd_get_nb_id() tip-bot2 for Yazen Ghannam
2020-11-09 21:06 ` [PATCH 3/4] EDAC/mce_amd: Use struct cpuinfo_x86.cpu_die_id for AMD NodeId Yazen Ghannam
2020-11-19 11:29   ` [tip: x86/cpu] " tip-bot2 for Yazen Ghannam
2020-11-09 21:06 ` [PATCH 4/4] x86/topology: Set cpu_die_id only if DIE_TYPE found Yazen Ghannam
2020-11-19 11:29   ` [tip: x86/cpu] " tip-bot2 for Yazen Ghannam

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