From: Zhang Rui <rui.zhang@intel.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org,
linux-hwmon@vger.kernel.org
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, hpa@zytor.com, peterz@infradead.org,
corbet@lwn.net, fenghua.yu@intel.com, jdelvare@suse.com,
linux@roeck-us.net, len.brown@intel.com, rui.zhang@intel.com
Subject: [PATCH V3 1/8] perf/x86/intel/P4: Unify logic for detecting HT
Date: Thu, 22 Sep 2022 21:37:53 +0800 [thread overview]
Message-ID: <20220922133800.12918-2-rui.zhang@intel.com> (raw)
In-Reply-To: <20220922133800.12918-1-rui.zhang@intel.com>
Any value larger than 1 suggests HT is supported.
Although smp_num_siblings cannot be larger than 2 on P4 platform, it is
better to keep the logic consistent across the kernel.
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
arch/x86/include/asm/perf_event_p4.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/perf_event_p4.h b/arch/x86/include/asm/perf_event_p4.h
index 94de1a05aeba..b14e9a20a7c0 100644
--- a/arch/x86/include/asm/perf_event_p4.h
+++ b/arch/x86/include/asm/perf_event_p4.h
@@ -189,7 +189,7 @@ static inline int p4_ht_active(void)
static inline int p4_ht_thread(int cpu)
{
#ifdef CONFIG_SMP
- if (smp_num_siblings == 2)
+ if (smp_num_siblings > 1)
return cpu != cpumask_first(this_cpu_cpumask_var_ptr(cpu_sibling_map));
#endif
return 0;
--
2.25.1
next prev parent reply other threads:[~2022-09-22 13:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-22 13:37 [PATCH V3 0/8] x86/topology: Improve CPUID.1F handling Zhang Rui
2022-09-22 13:37 ` Zhang Rui [this message]
2022-09-22 13:37 ` [PATCH V3 2/8] hwmon/coretemp: Rename indx to index Zhang Rui
2022-09-22 14:58 ` Guenter Roeck
2022-09-22 13:37 ` [PATCH V3 3/8] hwmon/coretemp: Handle large core ID value Zhang Rui
2022-09-22 14:59 ` Guenter Roeck
2022-09-22 13:37 ` [PATCH V3 4/8] x86/topology: Fix multiple packages shown on a single-package system Zhang Rui
2022-09-22 13:37 ` [PATCH V3 5/8] x86/topology: Fix duplicated core ID within a package Zhang Rui
2022-09-22 13:37 ` [PATCH V3 6/8] x86/topology: Fix max_siblings calculation Zhang Rui
2022-09-22 13:37 ` [PATCH V3 7/8] Documentation: x86: Update smp_num_siblings/x86_max_cores description Zhang Rui
2022-09-22 13:38 ` [PATCH V3 8/8] Documentation: x86: Remove obsolete x86_max_dies description Zhang Rui
2022-09-22 16:53 ` [PATCH V3 0/8] x86/topology: Improve CPUID.1F handling Dave Hansen
2022-09-23 8:39 ` Zhang Rui
2022-10-13 10:58 ` Len Brown
2022-10-13 15:56 ` Dave Hansen
2022-10-14 2:06 ` Zhang Rui
2022-10-14 3:19 ` Dave Hansen
2022-10-14 5:35 ` Zhang Rui
2022-10-14 8:17 ` Peter Zijlstra
2022-10-14 9:01 ` Zhang Rui
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