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Thu, 04 Jun 2020 12:56:19 +0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 054CuGef59637878 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 4 Jun 2020 12:56:16 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 593B7AE045; Thu, 4 Jun 2020 12:56:16 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B872BAE055; Thu, 4 Jun 2020 12:56:14 +0000 (GMT) Received: from fir03.in.ibm.com (unknown [9.121.59.65]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 4 Jun 2020 12:56:14 +0000 (GMT) From: Sandipan Das To: mpe@ellerman.id.au Cc: linux-kselftest@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linuxram@us.ibm.com, aneesh.kumar@linux.ibm.com, bauerman@linux.ibm.com, fweimer@redhat.com, ruscur@russell.cc Subject: [PATCH v3 2/3] selftests: powerpc: Move Hash MMU check to utilities Date: Thu, 4 Jun 2020 18:26:09 +0530 Message-Id: <20200604125610.649668-3-sandipan@linux.ibm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200604125610.649668-1-sandipan@linux.ibm.com> References: <20200604125610.649668-1-sandipan@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.687 definitions=2020-06-04_07:2020-06-02,2020-06-04 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 phishscore=0 clxscore=1015 suspectscore=1 adultscore=0 malwarescore=0 cotscore=-2147483648 spamscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006040085 X-Rspamd-Queue-Id: D58348002CEB X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This moves a function to test if the MMU is in Hash mode under the generic test utilities. Signed-off-by: Sandipan Das --- .../testing/selftests/powerpc/include/utils.h | 1 + tools/testing/selftests/powerpc/mm/Makefile | 2 +- .../selftests/powerpc/mm/bad_accesses.c | 28 ------------------- tools/testing/selftests/powerpc/utils.c | 28 +++++++++++++++++++ 4 files changed, 30 insertions(+), 29 deletions(-) diff --git a/tools/testing/selftests/powerpc/include/utils.h b/tools/testing/selftests/powerpc/include/utils.h index e089a0c30d9a..ad2728736ae5 100644 --- a/tools/testing/selftests/powerpc/include/utils.h +++ b/tools/testing/selftests/powerpc/include/utils.h @@ -60,6 +60,7 @@ static inline bool have_hwcap2(unsigned long ftr2) #endif bool is_ppc64le(void); +int using_hash_mmu(bool *using_hash); /* Yes, this is evil */ #define FAIL_IF(x) \ diff --git a/tools/testing/selftests/powerpc/mm/Makefile b/tools/testing/selftests/powerpc/mm/Makefile index b9103c4bb414..2389bf791fd6 100644 --- a/tools/testing/selftests/powerpc/mm/Makefile +++ b/tools/testing/selftests/powerpc/mm/Makefile @@ -10,7 +10,7 @@ TEST_GEN_FILES := tempfile top_srcdir = ../../../../.. include ../../lib.mk -$(TEST_GEN_PROGS): ../harness.c +$(TEST_GEN_PROGS): ../harness.c ../utils.c $(OUTPUT)/prot_sao: ../utils.c diff --git a/tools/testing/selftests/powerpc/mm/bad_accesses.c b/tools/testing/selftests/powerpc/mm/bad_accesses.c index adc465f499ef..a864ed7e2008 100644 --- a/tools/testing/selftests/powerpc/mm/bad_accesses.c +++ b/tools/testing/selftests/powerpc/mm/bad_accesses.c @@ -64,34 +64,6 @@ int bad_access(char *p, bool write) return 0; } -static int using_hash_mmu(bool *using_hash) -{ - char line[128]; - FILE *f; - int rc; - - f = fopen("/proc/cpuinfo", "r"); - FAIL_IF(!f); - - rc = 0; - while (fgets(line, sizeof(line), f) != NULL) { - if (strcmp(line, "MMU : Hash\n") == 0) { - *using_hash = true; - goto out; - } - - if (strcmp(line, "MMU : Radix\n") == 0) { - *using_hash = false; - goto out; - } - } - - rc = -1; -out: - fclose(f); - return rc; -} - static int test(void) { unsigned long i, j, addr, region_shift, page_shift, page_size; diff --git a/tools/testing/selftests/powerpc/utils.c b/tools/testing/selftests/powerpc/utils.c index 5ee0e98c4896..933678f1ed0a 100644 --- a/tools/testing/selftests/powerpc/utils.c +++ b/tools/testing/selftests/powerpc/utils.c @@ -293,3 +293,31 @@ void set_dscr(unsigned long val) asm volatile("mtspr %1,%0" : : "r" (val), "i" (SPRN_DSCR)); } + +int using_hash_mmu(bool *using_hash) +{ + char line[128]; + FILE *f; + int rc; + + f = fopen("/proc/cpuinfo", "r"); + FAIL_IF(!f); + + rc = 0; + while (fgets(line, sizeof(line), f) != NULL) { + if (strcmp(line, "MMU : Hash\n") == 0) { + *using_hash = true; + goto out; + } + + if (strcmp(line, "MMU : Radix\n") == 0) { + *using_hash = false; + goto out; + } + } + + rc = -1; +out: + fclose(f); + return rc; +}