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Date: Fri, 14 Feb 2020 16:10:47 -0300 From: Arnaldo Carvalho de Melo <acme@...nel.org> To: Ingo Molnar <mingo@...nel.org>, Thomas Gleixner <tglx@...utronix.de> Cc: Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>, Clark Williams <williams@...hat.com>, linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org, Arnaldo Carvalho de Melo <acme@...hat.com>, Adrian Hunter <adrian.hunter@...el.com>, Andrei Vagin <avagin@...nvz.org> Subject: [PATCH 13/23] tools headers UAPI: Sync sched.h with the kernel From: Arnaldo Carvalho de Melo <acme@...hat.com> To get the changes in: 769071ac9f20 ("ns: Introduce Time Namespace") Silencing this tools/perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/sched.h' differs from latest version at 'include/uapi/linux/sched.h' diff -u tools/include/uapi/linux/sched.h include/uapi/linux/sched.h Which enables 'perf trace' to decode the CLONE_NEWTIME bit in the 'flags' argument to the clone syscalls. Example of clone flags being decoded: [root@...co ~]# perf trace -e clone* 0.000 qemu-system-x8/23923 clone(clone_flags: VM|FS|FILES|SIGHAND|THREAD|SYSVSEM|SETTLS|PARENT_SETTID|CHILD_CLEARTID, newsp: 0x7f0dad7f9870, parent_tidptr: 0x7f0dad7fa9d0, child_tidptr: 0x7f0dad7fa9d0, tls: 0x7f0dad7fa700) = 6806 (qemu-system-x86) ? qemu-system-x8/6806 ... [continued]: clone()) = 0 ^C[root@...co ~]# At some point this should enable things like: # perf trace -e 'clone*/clone_flags&NEWTIME/' Cc: Adrian Hunter <adrian.hunter@...el.com> Cc: Andrei Vagin <avagin@...nvz.org> Cc: Jiri Olsa <jolsa@...nel.org> Cc: Namhyung Kim <namhyung@...nel.org> Cc: Thomas Gleixner <tglx@...utronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com> --- tools/include/uapi/linux/sched.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/include/uapi/linux/sched.h b/tools/include/uapi/linux/sched.h index 4a0217832464..2e3bc22c6f20 100644 --- a/tools/include/uapi/linux/sched.h +++ b/tools/include/uapi/linux/sched.h @@ -36,6 +36,12 @@ /* Flags for the clone3() syscall. */ #define CLONE_CLEAR_SIGHAND 0x100000000ULL /* Clear any signal handler and reset to SIG_DFL. */ +/* + * cloning flags intersect with CSIGNAL so can be used with unshare and clone3 + * syscalls only: + */ +#define CLONE_NEWTIME 0x00000080 /* New time namespace */ + #ifndef __ASSEMBLY__ /** * struct clone_args - arguments for the clone3 syscall -- 2.21.1
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