All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ian Rogers <irogers@google.com>
To: Andi Kleen <ak@linux.intel.com>, Jiri Olsa <jolsa@redhat.com>,
	Namhyung Kim <namhyung@kernel.org>,
	John Garry <john.garry@huawei.com>,
	Kajol Jain <kjain@linux.ibm.com>,
	"Paul A . Clarke" <pc@us.ibm.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Riccardo Mancini <rickyman7@gmail.com>,
	Kan Liang <kan.liang@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Madhavan Srinivasan <maddy@linux.ibm.com>,
	Song Liu <song@kernel.org>, Wan Jiabing <wanjiabing@vivo.com>,
	Yury Norov <yury.norov@gmail.com>,
	linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Ian Rogers <irogers@google.com>
Subject: [PATCH v2 4/8] perf cputopo: Match thread_siblings to topology ABI name
Date: Wed, 10 Nov 2021 16:21:05 -0800	[thread overview]
Message-ID: <20211111002109.194172-5-irogers@google.com> (raw)
In-Reply-To: <20211111002109.194172-1-irogers@google.com>

The topology name for thread_siblings is core_cpus_list, use this for
consistency and add documentation.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/cputopo.c | 26 +++++++++++++-------------
 tools/perf/util/cputopo.h | 11 +++++++++--
 tools/perf/util/header.c  |  6 +++---
 3 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/tools/perf/util/cputopo.c b/tools/perf/util/cputopo.c
index 420aeda16fbb..51b429c86f98 100644
--- a/tools/perf/util/cputopo.c
+++ b/tools/perf/util/cputopo.c
@@ -20,10 +20,10 @@
 	"%s/devices/system/cpu/cpu%d/topology/core_siblings_list"
 #define DIE_CPUS_FMT \
 	"%s/devices/system/cpu/cpu%d/topology/die_cpus_list"
-#define THRD_SIB_FMT \
-	"%s/devices/system/cpu/cpu%d/topology/thread_siblings_list"
-#define THRD_SIB_FMT_NEW \
+#define CORE_CPUS_FMT \
 	"%s/devices/system/cpu/cpu%d/topology/core_cpus_list"
+#define CORE_CPUS_FMT_OLD \
+	"%s/devices/system/cpu/cpu%d/topology/thread_siblings_list"
 #define NODE_ONLINE_FMT \
 	"%s/devices/system/node/online"
 #define NODE_MEMINFO_FMT \
@@ -104,10 +104,10 @@ static int build_cpu_topology(struct cpu_topology *tp, int cpu)
 	ret = 0;
 
 try_threads:
-	scnprintf(filename, MAXPATHLEN, THRD_SIB_FMT_NEW,
+	scnprintf(filename, MAXPATHLEN, CORE_CPUS_FMT,
 		  sysfs__mountpoint(), cpu);
 	if (access(filename, F_OK) == -1) {
-		scnprintf(filename, MAXPATHLEN, THRD_SIB_FMT,
+		scnprintf(filename, MAXPATHLEN, CORE_CPUS_FMT_OLD,
 			  sysfs__mountpoint(), cpu);
 	}
 	fp = fopen(filename, "r");
@@ -121,13 +121,13 @@ static int build_cpu_topology(struct cpu_topology *tp, int cpu)
 	if (p)
 		*p = '\0';
 
-	for (i = 0; i < tp->thread_sib; i++) {
-		if (!strcmp(buf, tp->thread_siblings[i]))
+	for (i = 0; i < tp->core_cpus_lists; i++) {
+		if (!strcmp(buf, tp->core_cpus_list[i]))
 			break;
 	}
-	if (i == tp->thread_sib) {
-		tp->thread_siblings[i] = buf;
-		tp->thread_sib++;
+	if (i == tp->core_cpus_lists) {
+		tp->core_cpus_list[i] = buf;
+		tp->core_cpus_lists++;
 		buf = NULL;
 	}
 	ret = 0;
@@ -151,8 +151,8 @@ void cpu_topology__delete(struct cpu_topology *tp)
 	for (i = 0 ; i < tp->die_cpus_lists; i++)
 		zfree(&tp->die_cpus_list[i]);
 
-	for (i = 0 ; i < tp->thread_sib; i++)
-		zfree(&tp->thread_siblings[i]);
+	for (i = 0 ; i < tp->core_cpus_lists; i++)
+		zfree(&tp->core_cpus_list[i]);
 
 	free(tp);
 }
@@ -215,7 +215,7 @@ struct cpu_topology *cpu_topology__new(void)
 		tp->die_cpus_list = addr;
 		addr += sz;
 	}
-	tp->thread_siblings = addr;
+	tp->core_cpus_list = addr;
 
 	for (i = 0; i < nr; i++) {
 		if (!cpu_map__has(map, i))
diff --git a/tools/perf/util/cputopo.h b/tools/perf/util/cputopo.h
index a3e01c367853..854e18f9041e 100644
--- a/tools/perf/util/cputopo.h
+++ b/tools/perf/util/cputopo.h
@@ -9,7 +9,8 @@ struct cpu_topology {
 	u32	  package_cpus_lists;
 	/* The number of unique die_cpu_lists below. */
 	u32	  die_cpus_lists;
-	u32	  thread_sib;
+	/* The number of unique core_cpu_lists below. */
+	u32	  core_cpus_lists;
 	/*
 	 * An array of strings where each string is unique and read from
 	 * /sys/devices/system/cpu/cpuX/topology/package_cpus_list. From the ABI
@@ -24,7 +25,13 @@ struct cpu_topology {
 	 * The format is like 0-3, 8-11, 14,17.
 	 */
 	const char **die_cpus_list;
-	char	**thread_siblings;
+	/*
+	 * An array of string where each string is unique and from
+	 * /sys/devices/system/cpu/cpuX/topology/core_cpus_list. From the ABI
+	 * each of these is a human-readable list of CPUs within the same
+	 * core. The format is like 0-3, 8-11, 14,17.
+	 */
+	const char **core_cpus_list;
 };
 
 struct numa_topology_node {
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index e2ba261d1583..fda8d14c891f 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -592,12 +592,12 @@ static int write_cpu_topology(struct feat_fd *ff,
 		if (ret < 0)
 			goto done;
 	}
-	ret = do_write(ff, &tp->thread_sib, sizeof(tp->thread_sib));
+	ret = do_write(ff, &tp->core_cpus_lists, sizeof(tp->core_cpus_lists));
 	if (ret < 0)
 		goto done;
 
-	for (i = 0; i < tp->thread_sib; i++) {
-		ret = do_write_string(ff, tp->thread_siblings[i]);
+	for (i = 0; i < tp->core_cpus_lists; i++) {
+		ret = do_write_string(ff, tp->core_cpus_list[i]);
 		if (ret < 0)
 			break;
 	}
-- 
2.34.0.rc1.387.gb447b232ab-goog


  parent reply	other threads:[~2021-11-11  0:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-11  0:21 [PATCH v2 0/8] New function and literals for metrics Ian Rogers
2021-11-11  0:21 ` [PATCH v2 1/8] perf test: Add expr test for events with hyphens Ian Rogers
2021-11-11  0:21 ` [PATCH v2 2/8] perf cputopo: Update to use pakage_cpus Ian Rogers
2021-11-11  0:21 ` [PATCH v2 3/8] perf cputopo: Match die_siblings to topology ABI name Ian Rogers
2021-11-11  0:21 ` Ian Rogers [this message]
2021-11-11  0:21 ` [PATCH v2 5/8] perf expr: Add literal values starting with # Ian Rogers
2021-11-11  0:21 ` [PATCH v2 6/8] perf expr: Add metric literals for topology Ian Rogers
2021-11-11  0:21 ` [PATCH v2 7/8] perf expr: Move ID handling to its own function Ian Rogers
2021-11-11  8:21   ` Jiri Olsa
2021-11-11 13:42     ` Arnaldo Carvalho de Melo
2021-11-11  0:21 ` [PATCH v2 8/8] perf expr: Add source_count for aggregating events Ian Rogers

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20211111002109.194172-5-irogers@google.com \
    --to=irogers@google.com \
    --cc=acme@kernel.org \
    --cc=ak@linux.intel.com \
    --cc=alexander.shishkin@linux.intel.com \
    --cc=john.garry@huawei.com \
    --cc=jolsa@redhat.com \
    --cc=kan.liang@linux.intel.com \
    --cc=kjain@linux.ibm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-perf-users@vger.kernel.org \
    --cc=maddy@linux.ibm.com \
    --cc=mark.rutland@arm.com \
    --cc=mingo@redhat.com \
    --cc=namhyung@kernel.org \
    --cc=pc@us.ibm.com \
    --cc=peterz@infradead.org \
    --cc=rickyman7@gmail.com \
    --cc=song@kernel.org \
    --cc=wanjiabing@vivo.com \
    --cc=yury.norov@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.