Hi, I'm just checking if you have received my message ? I want to understand what is going on here before merging your contribution into liburcu.
Thanks, Mathieu ----- On Jan 25, 2022, at 4:36 PM, Mathieu Desnoyers mathieu.desnoy...@efficios.com wrote: > Hi, > > I notice that the loongarch enablement patch defines: > > #define UATOMIC_HAS_ATOMIC_BYTE > #define UATOMIC_HAS_ATOMIC_SHORT > > I tried looking into > > > https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#atomic-memory-access-instructions > > to figure out which atomic instructions or LL/SC would be used to target 1 > and 2 > byte > variables atomically, but could only find instructions for word and > double-word: > > 2.2.7.1. AM{SWAP/ADD/AND/OR/XOR/MAX/MIN}[DB].{W/D}, AM{MAX/MIN}[_DB].{WU/DU} > 2.2.7.2. LL.{W/D}, SC.{W/D} > > What am I missing here ? > > Thanks, > > Mathieu > > ----- On Jan 24, 2022, at 6:59 AM, lttng-dev lttng-dev@lists.lttng.org wrote: > >> Unfortunately, the qemu approach does not help much in testing that the >> liburcu implementation works correctly on a given architecture's >> specific memory model. >> >> liburcu relies heavily on memory ordering, and liburcu-cds relies on >> both memory ordering and atomic operations and the memory ordering >> guarantees associated with them. >> >> So if there is any way we could get our hands on real hardware, it >> would be very much relevant for liburcu testing. >> >> Thanks, >> >> Mathieu >> >> ----- On Jan 24, 2022, at 3:02 AM, 张文龙 zhangwenl...@loongson.cn wrote: >> >>> I'm glad the new architecture can be accepted，At present, our machines are >>> in >>> short supply.I need to go through a very complicated process to provide >>> machines, Can qemu emulator work? >>> >>> >>> > -----原始邮件----- >>> > 发件人: "Mathieu Desnoyers" <mathieu.desnoy...@efficios.com> >>> > 发送时间: 2022-01-20 23:59:52 (星期四) >>> > 收件人: "张文龙" <zhangwenl...@loongson.cn> >>> > 抄送: lttng-dev <lttng-dev@lists.lttng.org> >>> > 主题: Re: [lttng-dev] Add support for the LOONGARCH architecture >>> > >>> > ----- On Jan 19, 2022, at 11:03 PM, lttng-dev lttng-dev@lists.lttng.org >>> wrote: >>> > >>> > > Hello, I'm excited to contribute to userspace-rcu, I added >>> loongarch >>> > > architecture for userspace-rcu（ The patch file is >>> > > 0001-Add-support-for-the-LOONGARCH-architecture.patch ) >>> > >>> > > I have compiled and verified locally (the build log is >>> build_log.txt >>> ),and then >>> > > i runed make check（ the make check log is make_check_log.txt ）， >>> make >>> > > regtest（the make regtest log is make_regtest_log.txt ） ， make >>> short_bench (the >>> > > make short_bench log is make_short_bench_log.txt ),make >>> long_bench(the >>> make >>> > > long_bench log is make_long_bench_log.txt ) >>> > >>> > This is great, thanks ! >>> > >>> > By the way, is there any way EfficiOS could add two loongarch test >>> boards >>> into >>> > our test rack for automated CI testing ? See https://ci.lttng.org >>> > >>> > We typically deploy at least two boards for each given architecture for >>> redundancy >>> > and availability for both CI and development use. >>> > >>> > This would help ensuring we catch liburcu regressions in the loongarch >>> architecture >>> > in the future. >>> > >>> > Thanks, >>> > >>> > Mathieu >>> > >>> > >>> > > 本邮件及其附件含有龙芯中科的商业秘密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部 >>> > > 分地泄露、复制或散发）本邮件及其附件中的信息。如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。 >>> > > This email and its attachments contain confidential information >>> from >>> Loongson >>> > > Technology , which is intended only for the person or entity whose >>> address is >>> > > listed above. Any use of the information contained herein in any >>> way >>> > > (including, but not limited to, total or partial disclosure, >>> reproduction or >>> > > dissemination) by persons other than the intended recipient(s) is >>> prohibited. >>> > > If you receive this email in error, please notify the sender by >>> phone >>> or email >>> > > immediately and delete it. >>> > > _______________________________________________ >>> > > lttng-dev mailing list >>> > > lttng-dev@lists.lttng.org >>> > > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev >>> > -- >>> > Mathieu Desnoyers >>> > EfficiOS Inc. >>> > http://www.efficios.com >>> </lttng-dev@lists.lttng.org></zhangwenl...@loongson.cn></mathieu.desnoy...@efficios.com> >>> >>> 本邮件及其附件含有龙芯中科的商业秘密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息。如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。 >>> This email and its attachments contain confidential information from >>> Loongson >>> Technology , which is intended only for the person or entity whose address >>> is >>> listed above. Any use of the information contained herein in any way >>> (including, but not limited to, total or partial disclosure, reproduction or >>> dissemination) by persons other than the intended recipient(s) is >>> prohibited. >>> If you receive this email in error, please notify the sender by phone or >>> email >>> immediately and delete it. >> >> -- >> Mathieu Desnoyers >> EfficiOS Inc. >> http://www.efficios.com >> _______________________________________________ >> lttng-dev mailing list >> lttng-dev@lists.lttng.org >> https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev > > -- > Mathieu Desnoyers > EfficiOS Inc. > http://www.efficios.com -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
