From: Sohil Mehta <sohil.mehta@intel.com>
Date: Tue, 18 Mar 2025 22:38:28 +0000 (+0000)
Subject: perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones
X-Git-Tag: v6.15-rc1~216^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de844ef582e3a5e0cbd429c68b6079eeb87394e5;p=thirdparty%2Flinux.git

perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones

Introduce a name for an old Pentium 4 model and replace the x86_model
checks with VFM ones. This gets rid of one of the last remaining
Intel-specific x86_model checks.

Signed-off-by: Sohil Mehta <sohil.mehta@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250318223828.2945651-3-sohil.mehta@intel.com
---

diff --git a/arch/x86/events/intel/p4.c b/arch/x86/events/intel/p4.c
index 844bc4fc4724d..fb726c6fc6e7f 100644
--- a/arch/x86/events/intel/p4.c
+++ b/arch/x86/events/intel/p4.c
@@ -10,6 +10,7 @@
 #include <linux/perf_event.h>
 
 #include <asm/perf_event_p4.h>
+#include <asm/cpu_device_id.h>
 #include <asm/hardirq.h>
 #include <asm/apic.h>
 
@@ -732,9 +733,9 @@ static bool p4_event_match_cpu_model(unsigned int event_idx)
 {
 	/* INSTR_COMPLETED event only exist for model 3, 4, 6 (Prescott) */
 	if (event_idx == P4_EVENT_INSTR_COMPLETED) {
-		if (boot_cpu_data.x86_model != 3 &&
-			boot_cpu_data.x86_model != 4 &&
-			boot_cpu_data.x86_model != 6)
+		if (boot_cpu_data.x86_vfm != INTEL_P4_PRESCOTT &&
+		    boot_cpu_data.x86_vfm != INTEL_P4_PRESCOTT_2M &&
+		    boot_cpu_data.x86_vfm != INTEL_P4_CEDARMILL)
 			return false;
 	}
 
diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
index 6cd08da64684f..3a97a7eefb512 100644
--- a/arch/x86/include/asm/intel-family.h
+++ b/arch/x86/include/asm/intel-family.h
@@ -193,6 +193,7 @@
 /* Family 15 - NetBurst */
 #define INTEL_P4_WILLAMETTE		IFM(15, 0x01) /* Also Xeon Foster */
 #define INTEL_P4_PRESCOTT		IFM(15, 0x03)
+#define INTEL_P4_PRESCOTT_2M		IFM(15, 0x04)
 #define INTEL_P4_CEDARMILL		IFM(15, 0x06) /* Also Xeon Dempsey */
 
 /* Family 19 */