From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 A995433557D; Thu, 10 Sep 2026 02:22:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789006980; cv=none; b=IJJPLDuPmhSqqTJsU9NfU06bhWzgMSNLrYZ2dBuykCEbx+Yl1CLNpYr+QdUQgKIa2cDnDZ+vrtu/31g/FmvphKvlN9aol8ZTN0a/TPl/qecQ8lKHMZCMCx88x+TWqK4XZKEGn5+kTKg6o0gQ8MTDBt/8pSzebBqiq+ogBUSxZeA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789006980; c=relaxed/simple; bh=8ERJE0jevKkO2RVEhRtlrtgxqA80hCw0UIp+ZVJwqyE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Wi+xbcve6EmxN8vr9n5of393yTRyTUco8kvxvZ4w+ag1L72258Ecy1D83C+fyrHvktr9V/f1cRn/uJOpq7icIwCH9s30yWTzLTGbrI9rlDJh/GU2ElkWh3FlXIym4r4gFqIXWJ2Udou8YndbsudDdkxzJ4aTvO+psNUDJ35cpKc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=RzSzWMoj; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass 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="RzSzWMoj" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1789006979; x=1820542979; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=8ERJE0jevKkO2RVEhRtlrtgxqA80hCw0UIp+ZVJwqyE=; b=RzSzWMojpEMp2/Y0rT5bpidVsKNWq6UkMJijYGzp4VDfvD6uFO5MLo1m sDuCmjL44wNPcFn3CTVCopO///FIg8spx+XOpq74soeXmT4u2tMRYPLBN Aow6Js+Cp7/UC/fbYinNfO1TzNrRrIzUBT8Dl/reGWwK1b9oPlltlgRvL 4ZjTI9Z2n6oomQzJNs26qnOKvFxYNycm9Rj20xijBjVrDAXkKzabYUrmZ JXVSU9RHsCZf9Hh8KOoktjL9RJp7swx+xXsMBOF4FqoZoVqdEARYeoYEU NceRDWvLJDp0bSTgxfOKj9ln+FrhHanqK1TPlGBRDkAI8+X0eRukcdo5m A==; X-CSE-ConnectionGUID: YWdiiD+oTKW8Je+ouYhTNQ== X-CSE-MsgGUID: 4Y0VHlblQY6K6yoPmZtkCw== X-IronPort-AV: E=McAfee;i="6800,10657,11900"; a="89292511" X-IronPort-AV: E=Sophos;i="6.25,271,1779174000"; d="scan'208";a="89292511" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2026 19:22:58 -0700 X-CSE-ConnectionGUID: FobBjntTR3WYogbgGVyLqw== X-CSE-MsgGUID: z0VEw9YpShOwf1cIcb7b/Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,271,1779174000"; d="scan'208";a="275256919" Received: from dapengmi-mobl1.ccr.corp.intel.com (HELO [10.124.241.239]) ([10.124.241.239]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2026 19:22:55 -0700 Message-ID: Date: Thu, 10 Sep 2026 10:22:53 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 5/6] perf tools: Show memory region in perf-script subcommand To: Thomas Falcon , Namhyung Kim Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark References: <20260909160218.174928-1-thomas.falcon@intel.com> <20260909160218.174928-6-thomas.falcon@intel.com> Content-Language: en-US From: "Mi, Dapeng" In-Reply-To: <20260909160218.174928-6-thomas.falcon@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/10/2026 12:02 AM, Thomas Falcon wrote: > From: Dapeng Mi > > Show the memory region in perf-script subcommand. Memory region is found > in the mem_region field of the memory information data source. This > field was included with the introduction of support for the Off-module > Response facility (OMR) [1] in Intel's Diamond Rapids and Nova Lake > Architectures. > > An example of perf-script output with the new memory region field is shown > below: > > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2ec > random 2411a68201042 |OP LOAD|LVL RAM hit|SNP Hit|TLB L1 or L2 hit|LCK No|BLK N/A|Region Mem-1 561de7f8910a > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2d0 > random 20e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK Data|Region N/A 7f32ae64a2d0 > random 20e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK Data|Region N/A 7f32ae64a2d0 > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2ec > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2d0 > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2d0 > random 2411a68201042 |OP LOAD|LVL RAM hit|SNP Hit|TLB L1 or L2 hit|LCK No|BLK N/A|Region Mem-1 561de7f8910a > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2ec > random 10e6a100042 |OP LOAD|LVL L0 hit|SNP None|TLB L1 or L2 hit|LCK Yes|BLK N/A|Region N/A 7f32ae64a2d0 > > [1]: https://lore.kernel.org/all/20260114011750.350569-1-dapeng1.mi@linux.intel.com/ > > Assisted-by: Sashiko:gemini-3.1-pro-preview > Assisted-by: GitHub-Copilot:claude-opus-4-8 > Reviewed-by: Ian Rogers > Signed-off-by: Dapeng Mi Add your "Co-developed-by" tag here. Thanks. > Signed-off-by: Thomas Falcon > --- > v4: Drop the global show-region flag; pass perf_session to > perf_script__meminfo_scnprintf() and gate the Region field > on the feature bit, with a pipe-mode fallback > > v3: make memory region reporting conditional on feature bit > --- > tools/perf/builtin-script.c | 13 +-- > tools/perf/util/mem-events.c | 86 ++++++++++++++++++- > tools/perf/util/mem-events.h | 4 +- > .../scripting-engines/trace-event-python.c | 5 +- > 4 files changed, 98 insertions(+), 10 deletions(-) > > diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c > index ad8ca08ceb5f..c7454155038d 100644 > --- a/tools/perf/builtin-script.c > +++ b/tools/perf/builtin-script.c > @@ -2078,11 +2078,12 @@ static int evlist__max_name_len(struct evlist *evlist) > return max; > } > > -static int data_src__fprintf(u64 data_src, FILE *fp) > +static int data_src__fprintf(struct perf_session *session, > + u64 data_src, FILE *fp) > { > struct mem_info *mi = mem_info__new(); > - char decode[100]; > - char out[100]; > + char decode[200]; > + char out[200]; > static int maxlen; > int len; > > @@ -2090,10 +2091,10 @@ static int data_src__fprintf(u64 data_src, FILE *fp) > return -ENOMEM; > > mem_info__data_src(mi)->val = data_src; > - perf_script__meminfo_scnprintf(decode, 100, mi); > + perf_script__meminfo_scnprintf(decode, 200, mi, session); > mem_info__put(mi); > > - len = scnprintf(out, 100, "%16" PRIx64 " %s", data_src, decode); > + len = scnprintf(out, 200, "%16" PRIx64 " %s", data_src, decode); > if (maxlen < len) > maxlen = len; > > @@ -2487,7 +2488,7 @@ static void process_event(struct perf_script *script, > perf_sample__fprintf_addr(sample, thread, evsel, fp); > > if (PRINT_FIELD(DATA_SRC)) > - data_src__fprintf(sample->data_src, fp); > + data_src__fprintf(evsel__session(evsel), sample->data_src, fp); > > if (PRINT_FIELD(WEIGHT)) > fprintf(fp, "%16" PRIu64, sample->weight); > diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c > index 4fd48fd20055..8ce4996cad8d 100644 > --- a/tools/perf/util/mem-events.c > +++ b/tools/perf/util/mem-events.c > @@ -604,8 +604,77 @@ int perf_mem__blk_scnprintf(char *out, size_t sz, const struct mem_info *mem_inf > return l; > } > > -int perf_script__meminfo_scnprintf(char *out, size_t sz, const struct mem_info *mem_info) > +static int perf_mem__region_scnprintf(char *out, size_t sz, const struct mem_info *mem_info) > { > + size_t l = 0; > + u64 mem = PERF_MEM_REGION_NA; > + > + sz -= 1; /* -1 for null termination */ > + out[0] = '\0'; > + > + if (mem_info) > + mem = mem_info__const_data_src(mem_info)->mem_region; > + > + switch (mem) { > + case PERF_MEM_REGION_NA: > + case PERF_MEM_REGION_RSVD: > + l += scnprintf(out + l, sz - l, "N/A"); > + break; > + case PERF_MEM_REGION_L_SHARE: > + l += scnprintf(out + l, sz - l, "Local-shared-cache"); > + break; > + case PERF_MEM_REGION_L_NON_SHARE: > + l += scnprintf(out + l, sz - l, "Local-non-shared-cache"); > + break; > + case PERF_MEM_REGION_O_IO: > + l += scnprintf(out + l, sz - l, "Other-IO"); > + break; > + case PERF_MEM_REGION_O_SHARE: > + l += scnprintf(out + l, sz - l, "Other-shared-cache"); > + break; > + case PERF_MEM_REGION_O_NON_SHARE: > + l += scnprintf(out + l, sz - l, "Other-non-shared-cache"); > + break; > + case PERF_MEM_REGION_MMIO: > + l += scnprintf(out + l, sz - l, "MMIO"); > + break; > + case PERF_MEM_REGION_MEM0: > + l += scnprintf(out + l, sz - l, "Mem-0"); > + break; > + case PERF_MEM_REGION_MEM1: > + l += scnprintf(out + l, sz - l, "Mem-1"); > + break; > + case PERF_MEM_REGION_MEM2: > + l += scnprintf(out + l, sz - l, "Mem-2"); > + break; > + case PERF_MEM_REGION_MEM3: > + l += scnprintf(out + l, sz - l, "Mem-3"); > + break; > + case PERF_MEM_REGION_MEM4: > + l += scnprintf(out + l, sz - l, "Mem-4"); > + break; > + case PERF_MEM_REGION_MEM5: > + l += scnprintf(out + l, sz - l, "Mem-5"); > + break; > + case PERF_MEM_REGION_MEM6: > + l += scnprintf(out + l, sz - l, "Mem-6"); > + break; > + case PERF_MEM_REGION_MEM7: > + l += scnprintf(out + l, sz - l, "Mem-7"); > + break; > + default: > + l += scnprintf(out + l, sz - l, "N/A"); > + break; > + } > + > + return l; > +} > + > +int perf_script__meminfo_scnprintf(char *out, size_t sz, > + const struct mem_info *mem_info, > + struct perf_session *session) > +{ > + struct perf_env *env; > int i = 0; > > i += scnprintf(out, sz, "|OP "); > @@ -620,6 +689,21 @@ int perf_script__meminfo_scnprintf(char *out, size_t sz, const struct mem_info * > i += perf_mem__lck_scnprintf(out + i, sz - i, mem_info); > i += scnprintf(out + i, sz - i, "|BLK "); > i += perf_mem__blk_scnprintf(out + i, sz - i, mem_info); > + if (session) { > + /* > + * In case the feature bits are not available, as in > + * pipe mode, fallback to checking for the existence of > + * memory ranges > + */ > + env = perf_session__env(session); > + if ((env && session->data->is_pipe && env->nr_memory_ranges) || > + perf_header__has_feat(&session->header, > + HEADER_MEMORY_RANGES)) { > + i += scnprintf(out + i, sz - i, "|Region "); > + i += perf_mem__region_scnprintf(out + i, sz - i, > + mem_info); > + } > + } > > return i; > } > diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h > index daa22748f9fe..4ebb8109fc3c 100644 > --- a/tools/perf/util/mem-events.h > +++ b/tools/perf/util/mem-events.h > @@ -4,6 +4,7 @@ > > #include > #include > +#include "session.h" > > struct perf_mem_event { > bool supported; > @@ -47,7 +48,8 @@ int perf_mem__snp_scnprintf(char *out, size_t sz, const struct mem_info *mem_inf > int perf_mem__lck_scnprintf(char *out, size_t sz, const struct mem_info *mem_info); > int perf_mem__blk_scnprintf(char *out, size_t sz, const struct mem_info *mem_info); > > -int perf_script__meminfo_scnprintf(char *bf, size_t size, const struct mem_info *mem_info); > +int perf_script__meminfo_scnprintf(char *bf, size_t size, const struct mem_info *mem_info, > + struct perf_session *session); > > struct c2c_stats { > u32 nr_entries; > diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c > index 8f832ae316ca..e359fe529586 100644 > --- a/tools/perf/util/scripting-engines/trace-event-python.c > +++ b/tools/perf/util/scripting-engines/trace-event-python.c > @@ -694,8 +694,9 @@ static void set_sample_read_in_dict(PyObject *dict_sample, struct perf_sample *s > static void set_sample_datasrc_in_dict(PyObject *dict, > struct perf_sample *sample) > { > + struct perf_session *session = evsel__session(sample->evsel); > struct mem_info *mi = mem_info__new(); > - char decode[100]; > + char decode[200]; > > if (!mi) > Py_FatalError("couldn't create mem-info"); > @@ -704,7 +705,7 @@ static void set_sample_datasrc_in_dict(PyObject *dict, > PyLong_FromUnsignedLongLong(sample->data_src)); > > mem_info__data_src(mi)->val = sample->data_src; > - perf_script__meminfo_scnprintf(decode, 100, mi); > + perf_script__meminfo_scnprintf(decode, 200, mi, session); > mem_info__put(mi); > > pydict_set_item_string_decref(dict, "datasrc_decode",