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From: Len Brown <lenb@kernel.org>
To: torvalds@linux-foundation.org
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Len Brown <len.brown@intel.com>
Subject: [PATCH 1/1] tools/power turbostat: Fix AMD RAPL regression
Date: Tue, 17 Feb 2026 23:36:52 -0600	[thread overview]
Message-ID: <ef0e60083f768b32cda17b1b0ca9519405db89a6.1771392818.git.len.brown@intel.com> (raw)
In-Reply-To: <20260218054436.705622-1-lenb@kernel.org>

From: Len Brown <len.brown@intel.com>

turbostat.c:8688: rapl_perf_init: Assertion `next_domain < num_domains' failed.

Two recent cleanup patches that were not supposed to change anything
broke the core_id code needed for AMD RAPL initialization:

commit 070e92361eec ("tools/power turbostat: Enhance HT enumeration")
commit ddf60e38ca04 ("tools/power turbostat: Simplify global core_id calculation")

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 tools/power/x86/turbostat/turbostat.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 1aace9b3269e..1a2671c28209 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -5164,7 +5164,7 @@ static inline int get_rapl_domain_id(int cpu)
 	if (!platform->has_per_core_rapl)
 		return cpus[cpu].package_id;
 
-	return GLOBAL_CORE_ID(cpu, cpus[cpu].package_id);
+	return GLOBAL_CORE_ID(cpus[cpu].core_id, cpus[cpu].package_id);
 }
 
 /*
@@ -9633,7 +9633,6 @@ void topology_probe(bool startup)
 	}
 	topo.max_core_id = max_core_id;	/* within a package */
 	topo.max_package_id = max_package_id;
-	topo.num_cores = (max_core_id + 1) * topo.num_packages;	/* per system */
 
 	topo.cores_per_node = max_core_id + 1;
 	if (debug > 1)
-- 
2.45.2


  reply	other threads:[~2026-02-18  5:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-18  5:36 [GIT PULL v2] turbostat-v2026.02.14+AMD Len Brown
2026-02-18  5:36 ` Len Brown [this message]
2026-02-18 19:05 ` pr-tracker-bot
  -- strict thread matches above, loose matches on Subject: below --
2026-02-18  3:02 [GIT PULL] turbostat-v2026.02.14+AMD Len Brown
2026-02-18  3:02 ` [PATCH 1/1] tools/power turbostat: Fix AMD RAPL regression Len Brown

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