Hi Bruce Thanks, I am interested in 5.8 onwards. since that's what is in master. Perhaps will be good to have it in dunfell versions too, but don't sweat over it.
On Mon, Nov 16, 2020 at 5:13 PM Bruce Ashfield <bruce.ashfi...@gmail.com> wrote: > > > > On Mon, Nov 16, 2020 at 2:07 PM Khem Raj <raj.k...@gmail.com> wrote: >> >> glibc does not define SYS_futex for 32bit architectures using 64bit >> time_t e.g. riscv32, therefore perf fails to compile as it does not find >> SYS_futex in C library headers, define it to SYS_futex_time64 when it >> exists > > > I've queued this on linux-yocto. > > But which versions were you interested in ? I did -dev and 5.8. > > Bruce > > >> >> >> Upstream-Status: Pending >> Signed-off-by: Khem Raj <raj.k...@gmail.com> >> --- >> tools/perf/bench/futex.h | 13 +++++++++++++ >> 1 file changed, 13 insertions(+) >> >> diff --git a/tools/perf/bench/futex.h b/tools/perf/bench/futex.h >> index 31b53cc7d5bc..33f3f3230ae1 100644 >> --- a/tools/perf/bench/futex.h >> +++ b/tools/perf/bench/futex.h >> @@ -13,6 +13,19 @@ >> #include <sys/types.h> >> #include <linux/futex.h> >> >> +/** >> + * SYS_futex is expected from system C library, >> + * in glibc (/usr/include/bits/syscall.h defines it in terms of of NR_futex) >> + * some newer 32bit architectures e.g. RISCV32 is using 64bit time_t from >> + * get go unlike other 32bit architectures in glibc, therefore it wont have >> + * NR_futex defined but just NR_futex_time64 this aliases it to NR_futex >> + * so that SYS_futex is then defined for rv32 >> +*/ >> + >> +#if !defined(SYS_futex) && defined(SYS_futex_time64) >> +#define SYS_futex SYS_futex_time64 >> +#endif >> + >> /** >> * futex() - SYS_futex syscall wrapper >> * @uaddr: address of first futex >> -- >> 2.29.2 >> > > > -- > - Thou shalt not follow the NULL pointer, for chaos and madness await thee at > its end > - "Use the force Harry" - Gandalf, Star Trek II >
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