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GET /api/patches/2218101/?format=api
{ "id": 2218101, "url": "http://patchwork.ozlabs.org/api/patches/2218101/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/patch/20260331-nanosleep_posix_fix-v1-1-7a707f871582@suse.com/", "project": { "id": 59, "url": "http://patchwork.ozlabs.org/api/projects/59/?format=api", "name": "Linux Test Project development", "link_name": "ltp", "list_id": "ltp.lists.linux.it", "list_email": "ltp@lists.linux.it", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260331-nanosleep_posix_fix-v1-1-7a707f871582@suse.com>", "list_archive_url": null, "date": "2026-03-31T11:48:56", "name": "nanosleep: Use CLOCK_MONOTONIC for elapsed time measurement", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": false, "hash": "4994dbef250d8905fba54afc4bc8625478c8fca4", "submitter": { "id": 83220, "url": "http://patchwork.ozlabs.org/api/people/83220/?format=api", "name": "Andrea Cervesato", "email": "andrea.cervesato@suse.de" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/ltp/patch/20260331-nanosleep_posix_fix-v1-1-7a707f871582@suse.com/mbox/", "series": [ { "id": 498184, "url": "http://patchwork.ozlabs.org/api/series/498184/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ltp/list/?series=498184", "date": "2026-03-31T11:48:56", "name": "nanosleep: Use CLOCK_MONOTONIC for elapsed time measurement", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498184/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2218101/comments/", "check": "success", "checks": "http://patchwork.ozlabs.org/api/patches/2218101/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "ltp@lists.linux.it" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "ltp@picard.linux.it" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256\n header.s=susede2_rsa header.b=fJPhs6SF;\n\tdkim=fail reason=\"signature verification failed\" header.d=suse.de\n header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519\n header.b=AamvQDuG;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key)\n header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa\n header.b=fJPhs6SF;\n\tdkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=AamvQDuG;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; 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Tue, 31 Mar 2026 11:49:16 +0000" ], "DKIM-Signature": [ "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1774957756;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding;\n bh=N/vKmGkFgcQxk+8GAaAZX9vAQC+0lvTTvtYG1utCWho=;\n b=fJPhs6SFDXwB1WPWt+FDImwzand3AVJbBiPMYU47WjabwpksnuGKKzem6+ofmaN6GJY/Wk\n Axzl6jEtTN/bVR2YL4Su234dOjdhOnVcjHrxRXnvMDygPRWlJb/FkSuK1rAn/iaaOYosB+\n h23R+hmZ4KE86nNR9rorL/sZxS10pz0=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1774957756;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding;\n bh=N/vKmGkFgcQxk+8GAaAZX9vAQC+0lvTTvtYG1utCWho=;\n b=AamvQDuGo+uvL049YV6TaMjJMF3waft3G3/4i+Cq71sl7Ug1JAle0s6Zq1OHBQrg36MTkz\n JkwVppY4VnCPalDA==", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1774957756;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding;\n bh=N/vKmGkFgcQxk+8GAaAZX9vAQC+0lvTTvtYG1utCWho=;\n b=fJPhs6SFDXwB1WPWt+FDImwzand3AVJbBiPMYU47WjabwpksnuGKKzem6+ofmaN6GJY/Wk\n Axzl6jEtTN/bVR2YL4Su234dOjdhOnVcjHrxRXnvMDygPRWlJb/FkSuK1rAn/iaaOYosB+\n h23R+hmZ4KE86nNR9rorL/sZxS10pz0=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1774957756;\n h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc:\n mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding;\n bh=N/vKmGkFgcQxk+8GAaAZX9vAQC+0lvTTvtYG1utCWho=;\n b=AamvQDuGo+uvL049YV6TaMjJMF3waft3G3/4i+Cq71sl7Ug1JAle0s6Zq1OHBQrg36MTkz\n JkwVppY4VnCPalDA==" ], "From": "Andrea Cervesato <andrea.cervesato@suse.de>", "Date": "Tue, 31 Mar 2026 13:48:56 +0200", "MIME-Version": "1.0", "Message-Id": "<20260331-nanosleep_posix_fix-v1-1-7a707f871582@suse.com>", "X-B4-Tracking": "v=1; b=H4sIAKe0y2kC/x2MWwqAIBAArxL7neAD/OgqESK61UKouBCCePekz\n xmY6cBYCRm2pUPFl5hymqDWBcLt04WC4mTQUltpjBLJp8wPYnElMzV3UhPWKqt9CF5hhFmWilP\n /1/0Y4wP7bpRxZQAAAA==", "X-Change-ID": "20260331-nanosleep_posix_fix-66162acca1ed", "To": "Linux Test Project <ltp@lists.linux.it>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1774957756; l=8054;\n i=andrea.cervesato@suse.com; s=20251210; h=from:subject:message-id;\n bh=tE5g1rymUoaL6FTelQrprJFFa88MW8OBGGZEWaXALLY=;\n b=aXy9bw1qJOubqLfYmx7izzlOv3Oq9/kLsC6piA9UtRqnFC+qyAvTMIMAW94U91SQl8QX0bDi7\n u3ghfUS4be8DlV0z5BJdKNviTIZEm4lA7Eu1wPLpvQ7JAaJMN/1qAW+", "X-Developer-Key": "i=andrea.cervesato@suse.com; a=ed25519;\n pk=zKY+6GCauOiuHNZ//d8PQ/UL4jFCTKbXrzXAOQSLevI=", "X-Spam-Score": "-4.30", "X-Spam-Level": "", "X-Spamd-Result": "default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[100.00%];\n NEURAL_HAM_LONG(-1.00)[-1.000];\n NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain];\n FUZZY_RATELIMITED(0.00)[rspamd.com];\n RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[];\n RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[];\n DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519];\n TO_DN_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+];\n FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[];\n RCVD_COUNT_TWO(0.00)[2];\n DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo, suse.com:mid,\n suse.com:email]", "X-Spam-Status": "No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS shortcircuit=no\n autolearn=disabled version=4.0.1", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on in-3.smtp.seeweb.it", "X-Virus-Scanned": "clamav-milter 1.0.9 at in-3.smtp.seeweb.it", "X-Virus-Status": "Clean", "Subject": "[LTP] [PATCH] nanosleep: Use CLOCK_MONOTONIC for elapsed time\n measurement", "X-BeenThere": "ltp@lists.linux.it", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "Linux Test Project <ltp.lists.linux.it>", "List-Unsubscribe": "<https://lists.linux.it/options/ltp>,\n <mailto:ltp-request@lists.linux.it?subject=unsubscribe>", "List-Archive": "<http://lists.linux.it/pipermail/ltp/>", "List-Post": "<mailto:ltp@lists.linux.it>", "List-Help": "<mailto:ltp-request@lists.linux.it?subject=help>", "List-Subscribe": "<https://lists.linux.it/listinfo/ltp>,\n <mailto:ltp-request@lists.linux.it?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it", "Sender": "\"ltp\" <ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it>" }, "content": "From: Andrea Cervesato <andrea.cervesato@suse.com>\n\nAll nanosleep POSIX conformance tests used CLOCK_REALTIME to measure\nelapsed sleep duration. CLOCK_REALTIME can jump due to NTP corrections,\nVM time sync, or other wall-clock adjustments, causing sporadic test\nfailures where measured time far exceeds expected sleep duration.\n\nSwitch to CLOCK_MONOTONIC which is immune to wall-clock changes and is\nthe correct clock for measuring elapsed durations.\n\nSigned-off-by: Andrea Cervesato <andrea.cervesato@suse.com>\n---\n testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-1.c | 4 ++--\n testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-2.c | 4 ++--\n testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-3.c | 4 ++--\n .../open_posix_testsuite/conformance/interfaces/nanosleep/10000-1.c | 4 ++--\n testcases/open_posix_testsuite/conformance/interfaces/nanosleep/2-1.c | 4 ++--\n testcases/open_posix_testsuite/conformance/interfaces/nanosleep/3-2.c | 4 ++--\n testcases/open_posix_testsuite/conformance/interfaces/nanosleep/7-2.c | 4 ++--\n 7 files changed, 14 insertions(+), 14 deletions(-)\n\n\n---\nbase-commit: 4688c20c01eece869b59e05ca3dd68c43e0d6af7\nchange-id: 20260331-nanosleep_posix_fix-66162acca1ed\n\nBest regards,", "diff": "diff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-1.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-1.c\nindex 687d01e288d914fbbdc18287746f71296c7a4327..d76451e3438e15d44ab2c2b8d0b349e666daec8c 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-1.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-1.c\n@@ -18,7 +18,7 @@ int main(void)\n \tint sleepnsec = 3;\n \tint slepts = 0, sleptns = 0;\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) == -1) {\n \t\tperror(\"Error in clock_gettime()\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\n@@ -30,7 +30,7 @@ int main(void)\n \t\treturn PTS_UNRESOLVED;\n \t}\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\tperror(\"Error in clock_gettime()\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\ndiff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-2.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-2.c\nindex 76f31982508dc87a4f400022cd46fe766071f27d..f72cbcfbbe06a0059bbc17ad617ca76c65651a93 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-2.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-2.c\n@@ -21,7 +21,7 @@ int main(void)\n \tint sleepsec = 30;\n \tint pid;\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) == -1) {\n \t\tperror(\"Error in clock_gettime()\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\n@@ -46,7 +46,7 @@ int main(void)\n \t\t\tperror(\"Error waiting for child to exit\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\n-\t\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\ndiff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-3.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-3.c\nindex 31ac00858018c3741758d0b5f2bf28f87aa6c1bf..07ce767123443cea2754c8b5ff2a20ed536cbfec 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-3.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/1-3.c\n@@ -28,7 +28,7 @@ int main(void)\n \tint pid;\n \tstruct sigaction act;\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) == -1) {\n \t\tperror(\"Error in clock_gettime()\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\n@@ -64,7 +64,7 @@ int main(void)\n \t\t\tperror(\"Error waiting for child to exit\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\n-\t\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\ndiff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/10000-1.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/10000-1.c\nindex 883885df434fb4ba3bb555dd565880f14623a984..8bd372f590314faa8f15fccbe5325e9fa31a6f95 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/10000-1.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/10000-1.c\n@@ -56,13 +56,13 @@ int main(void)\n \t\ttssleepfor.tv_nsec = sleepvalid[i][1];\n \t\tprintf(\"sleep %d sec %d nsec\\n\",\n \t\t (int)tssleepfor.tv_sec, (int)tssleepfor.tv_nsec);\n-\t\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) {\n+\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) == -1) {\n \t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\n \n \t\tif (nanosleep(&tssleepfor, &tsstorage) == 0) {\n-\t\t\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\t\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\t\treturn PTS_UNRESOLVED;\n \t\t\t}\ndiff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/2-1.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/2-1.c\nindex cce3941e7be7212ea286647ec601d3ecbb9bb85a..f44d0f938a586defa3ef244371f1850865801afa 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/2-1.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/2-1.c\n@@ -25,7 +25,7 @@ int main(void)\n \tint failure = 0;\n \tint slepts, sleptns;\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) == -1) {\n \t\tperror(\"Error in clock_gettime()\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\n@@ -38,7 +38,7 @@ int main(void)\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\n \n-\t\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\ndiff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/3-2.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/3-2.c\nindex bfc271edf25f9cd0f343eef11b335d5da20eb646..201ab72a5d4a5a345839fb87f4f1621c70a5bb36 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/3-2.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/3-2.c\n@@ -26,7 +26,7 @@ int main(void)\n \tint pid, slepts;\n \tstruct timespec tsbefore, tsafter;\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) != 0) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) != 0) {\n \t\tperror(\"clock_gettime() did not return success\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\n@@ -74,7 +74,7 @@ int main(void)\n \t\t\treturn PTS_FAIL;\n \t\t}\n \n-\t\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\treturn PTS_UNRESOLVED;\n \t\t}\ndiff --git a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/7-2.c b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/7-2.c\nindex caf4470e4a26b27ec79deed27c147e2feceffdf8..eab419591ab0c27a5d2dfb556cf2f13f7cc25e6e 100644\n--- a/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/7-2.c\n+++ b/testcases/open_posix_testsuite/conformance/interfaces/nanosleep/7-2.c\n@@ -34,7 +34,7 @@ int main(void)\n \tint pid;\n \tstruct sigaction act;\n \n-\tif (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) {\n+\tif (clock_gettime(CLOCK_MONOTONIC, &tsbefore) == -1) {\n \t\tperror(\"Error in clock_gettime()\\n\");\n \t\treturn PTS_UNRESOLVED;\n \t}\n@@ -60,7 +60,7 @@ int main(void)\n \t\t\treturn CHILDFAILURE;\n \t\t}\n \n-\t\tif (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {\n+\t\tif (clock_gettime(CLOCK_MONOTONIC, &tsafter) == -1) {\n \t\t\tperror(\"Error in clock_gettime()\\n\");\n \t\t\treturn CHILDFAILURE;\n \t\t}\n", "prefixes": [] }