summaryrefslogtreecommitdiff
path: root/arch/mips/tools/loongson3-llsc-check.c
AgeCommit message (Collapse)Author
2022-05-04MIPS: fix typos in commentsJulia Lawall
Various spelling mistakes in comments. Detected with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-04MIPS: tools: Move "returns" after "loongson3-llsc-check"Tiezhu Yang
Just move "returns" after "loongson3-llsc-check", no function changes. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-04-30MIPS: tools: Show result for loongson3-llsc-checkTiezhu Yang
It is better to show the result before loongson3-llsc-check exit, otherwise we can see nothing if the return status is EXIT_SUCCESS, it seems confusing. E.g. without this patch: [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux [loongson@localhost tools]$ With this patch: [loongson@localhost tools]$ ./loongson3-llsc-check ../../../vmlinux loongson3-llsc-check returns success [loongson@localhost tools]$ Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2019-10-07MIPS: Check Loongson3 LL/SC errata workaround correctnessPaul Burton
When Loongson3 LL/SC errata workarounds are enabled (ie. CONFIG_CPU_LOONGSON3_WORKAROUNDS=y) run a tool to scan through the compiled kernel & ensure that the workaround is applied correctly. That is, ensure that: - Every LL or LLD instruction is preceded by a sync instruction. - Any branches from within an LL/SC loop to outside of that loop target a sync instruction. Reasoning for these conditions can be found by reading the comment above the definition of __SYNC_loongson3_war in arch/mips/include/asm/sync.h. This tool will help ensure that we don't inadvertently introduce code paths that miss the required workarounds. Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: Huacai Chen <chenhc@lemote.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: linux-kernel@vger.kernel.org