linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Florian Fainelli <f.fainelli@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	Kim Phillips <kim.phillips@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ravi Bangoria <ravi.bangoria@linux.ibm.com>,
	Thomas Richter <tmricht@linux.ibm.com>,
	linux-kernel@vger.kernel.org (open list),
	rmk+kernel@armlinux.org.uk, l.stach@pengutronix.de
Subject: [PATCH 2/2] perf tests: Add a test for the ARM 32-bit [vectors] page
Date: Wed, 24 Oct 2018 17:09:05 -0700	[thread overview]
Message-ID: <20181025000905.6095-3-f.fainelli@gmail.com> (raw)
In-Reply-To: <20181025000905.6095-1-f.fainelli@gmail.com>

perf on ARM requires CONFIG_KUSER_HELPERS to be turned on to allow some
independance with respect to the ARM CPU being used. Add a test which
tries to locate the [vectors] page, created when CONFIG_KUSER_HELPERS is
turned on to help asses the system's health.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 tools/perf/arch/arm/tests/Build          |  1 +
 tools/perf/arch/arm/tests/arch-tests.c   |  4 ++++
 tools/perf/arch/arm/tests/vectors-page.c | 20 ++++++++++++++++++++
 tools/perf/tests/tests.h                 |  5 +++++
 4 files changed, 30 insertions(+)
 create mode 100644 tools/perf/arch/arm/tests/vectors-page.c

diff --git a/tools/perf/arch/arm/tests/Build b/tools/perf/arch/arm/tests/Build
index 883c57ff0c08..d9ae2733f9cc 100644
--- a/tools/perf/arch/arm/tests/Build
+++ b/tools/perf/arch/arm/tests/Build
@@ -1,4 +1,5 @@
 libperf-y += regs_load.o
 libperf-y += dwarf-unwind.o
+libperf-y += vectors-page.o
 
 libperf-y += arch-tests.o
diff --git a/tools/perf/arch/arm/tests/arch-tests.c b/tools/perf/arch/arm/tests/arch-tests.c
index 5b1543c98022..6848101a855f 100644
--- a/tools/perf/arch/arm/tests/arch-tests.c
+++ b/tools/perf/arch/arm/tests/arch-tests.c
@@ -10,6 +10,10 @@ struct test arch_tests[] = {
 		.func = test__dwarf_unwind,
 	},
 #endif
+	{
+		.desc = "Vectors page",
+		.func = test__vectors_page,
+	},
 	{
 		.func = NULL,
 	},
diff --git a/tools/perf/arch/arm/tests/vectors-page.c b/tools/perf/arch/arm/tests/vectors-page.c
new file mode 100644
index 000000000000..e44223cbf0df
--- /dev/null
+++ b/tools/perf/arch/arm/tests/vectors-page.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <string.h>
+#include <linux/compiler.h>
+
+#include "tests/tests.h"
+#include "util/find-map.c"
+
+#define VECTORS__MAP_NAME "[vectors]"
+
+int test__vectors_page(struct test *test __maybe_unused,
+		       int subtest __maybe_unused)
+{
+	void *start, *end;
+
+	if (find_map(&start, &end, VECTORS__MAP_NAME))
+		return -1;
+
+	return 0;
+}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index b82f55fcc294..399f18ca71a3 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -119,4 +119,9 @@ int test__arch_unwind_sample(struct perf_sample *sample,
 			     struct thread *thread);
 #endif
 #endif
+
+#if defined(__arm__)
+int test__vectors_page(struct test *test, int subtest);
+#endif
+
 #endif /* TESTS_H */
-- 
2.17.1


  parent reply	other threads:[~2018-10-25  0:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-25  0:09 [PATCH 0/2] perf tests: Check for ARM " Florian Fainelli
2018-10-25  0:09 ` [PATCH 1/2] perf tools: Make find_vdso_map() more modular Florian Fainelli
2018-10-25  0:14   ` Florian Fainelli
2018-10-25  0:09 ` Florian Fainelli [this message]
2018-10-25  2:10   ` [PATCH 2/2] perf tests: Add a test for the ARM 32-bit [vectors] page Andrew Lunn
2018-10-25 17:19     ` Florian Fainelli
2018-10-25 17:32       ` Russell King - ARM Linux
2018-10-25 17:53         ` Florian Fainelli
2018-10-25 18:03           ` Russell King - ARM Linux
2018-10-31 22:21 ` [PATCH 0/2] perf tests: Check for ARM " Florian Fainelli

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=20181025000905.6095-3-f.fainelli@gmail.com \
    --to=f.fainelli@gmail.com \
    --cc=acme@kernel.org \
    --cc=alexander.shishkin@linux.intel.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=jolsa@redhat.com \
    --cc=kim.phillips@arm.com \
    --cc=l.stach@pengutronix.de \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=namhyung@kernel.org \
    --cc=peterz@infradead.org \
    --cc=ravi.bangoria@linux.ibm.com \
    --cc=rmk+kernel@armlinux.org.uk \
    --cc=tglx@linutronix.de \
    --cc=tmricht@linux.ibm.com \
    --subject='Re: [PATCH 2/2] perf tests: Add a test for the ARM 32-bit [vectors] page' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).