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 _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
