From nobody Sun Feb 8 03:58:19 2026 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 009122857C6; Tue, 6 May 2025 16:48:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746550097; cv=none; b=gMgDl3V+Vye0UU6CnTr+t5NNBk6uCuRFfjFRtiuUqcxs/sVvl1vFTFB8d6eeEAcLfxZ/N0XG3RbzxUg+b5RbRl/3f+MsBzvp4NVfsSm/YvoAE4vW65crS5y59DBZfksqMEdQJxwT7GYOCThfW2ylHmW4/MtNo5/kGrOoIGqmEgE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746550097; c=relaxed/simple; bh=VV8txqq1/dac9dNKChyvYqISNo6GE9wkTCjkP9SqIFc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=tvAU83cjl1vI9b8jJi4IL4eDt17gc/RUMVUGb/JnxcSRuwUrE+9uLusSMdbiqNIIuvIIGrOdD7SpUzMTczuRQKAY5ePott7GJbQgBo0WNqhGL1sJJ3L+IacVXf/c0LUi2+Hi5UjWCtiR1kYu9ji/C1+9vh6al3JFvdq4ViNkM5Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=D+HUk/X9; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="D+HUk/X9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1746550096; x=1778086096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VV8txqq1/dac9dNKChyvYqISNo6GE9wkTCjkP9SqIFc=; b=D+HUk/X9Lx+PmXbObv7MLTix2AB10K9nvekV6pXG3lYfTDOlIiM6FcCb Hp47ZPu8C8GO73Du3Ij3oB5c++OsT0/Bb8VxPfCNGFQYLgK+XunpRCkon KfSaOO5v/cAaL3QAPyo97uMbZ8E8k8A5yWTrHRzHckrll7nvTGJbaL8mE EV+FgFIjhgeQYHsF0dlPiluQ17YyCUr5kG2Ap/SyLyA9sgRHE4MqHvcRx PD5pr4s1se9oOpzPlZ8QZH9k4z5icpX2KQrytqo+8gutOPU4+CoeqpUWS AjZXt2+YIJyClBoTa6DqcQvXl3+C5EjbruTus44gLn3oXb2eA8PurrVns A==; X-CSE-ConnectionGUID: eA0iz0mzRFyrv05iSu2I2g== X-CSE-MsgGUID: 4pdA+pByTnqscNDxcxzCNQ== X-IronPort-AV: E=McAfee;i="6700,10204,11425"; a="59595262" X-IronPort-AV: E=Sophos;i="6.15,266,1739865600"; d="scan'208";a="59595262" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2025 09:48:15 -0700 X-CSE-ConnectionGUID: 9atE7ECQSVeYRU1cJ5Vacg== X-CSE-MsgGUID: JD9/R/cATQO8HgvGmKztKA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,266,1739865600"; d="scan'208";a="135674862" Received: from kanliang-dev.jf.intel.com ([10.165.154.102]) by fmviesa007.fm.intel.com with ESMTP; 06 May 2025 09:48:15 -0700 From: kan.liang@linux.intel.com To: peterz@infradead.org, mingo@redhat.com, namhyung@kernel.org, irogers@google.com, mark.rutland@arm.com, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Cc: eranian@google.com, ctshao@google.com, tmricht@linux.ibm.com, Kan Liang , Athira Rajeev , Madhavan Srinivasan Subject: [RFC PATCH 05/15] powerpc/perf: Remove driver-specific throttle support Date: Tue, 6 May 2025 09:47:30 -0700 Message-Id: <20250506164740.1317237-6-kan.liang@linux.intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20250506164740.1317237-1-kan.liang@linux.intel.com> References: <20250506164740.1317237-1-kan.liang@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Kan Liang The throttle support has been added in the generic code. Remove the driver-specific throttle support. Besides the throttle, perf_event_overflow may return true because of event_limit. It already does an inatomic event disable. The pmu->stop is not required either. Signed-off-by: Kan Liang Cc: Athira Rajeev Cc: Madhavan Srinivasan --- arch/powerpc/perf/core-book3s.c | 6 ++---- arch/powerpc/perf/core-fsl-emb.c | 3 +-- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3= s.c index 42ff4d167acc..8b0081441f85 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -2344,12 +2344,10 @@ static void record_and_restart(struct perf_event *e= vent, unsigned long val, ppmu->get_mem_weight(&data.weight.full, event->attr.sample_type); data.sample_flags |=3D PERF_SAMPLE_WEIGHT_TYPE; } - if (perf_event_overflow(event, &data, regs)) - power_pmu_stop(event, 0); + perf_event_overflow(event, &data, regs); } else if (period) { /* Account for interrupt in case of invalid SIAR */ - if (perf_event_account_interrupt(event)) - power_pmu_stop(event, 0); + perf_event_account_interrupt(event); } } =20 diff --git a/arch/powerpc/perf/core-fsl-emb.c b/arch/powerpc/perf/core-fsl-= emb.c index d2ffcc7021c5..7120ab20cbfe 100644 --- a/arch/powerpc/perf/core-fsl-emb.c +++ b/arch/powerpc/perf/core-fsl-emb.c @@ -635,8 +635,7 @@ static void record_and_restart(struct perf_event *event= , unsigned long val, =20 perf_sample_data_init(&data, 0, last_period); =20 - if (perf_event_overflow(event, &data, regs)) - fsl_emb_pmu_stop(event, 0); + perf_event_overflow(event, &data, regs); } } =20 --=20 2.38.1