From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 2/4] tools headers: Synchronize prctl.h ABI header Date: Sat, 2 Jun 2018 11:59:25 -0300 Message-ID: <20180602145927.23307-3-acme@kernel.org> References: <20180602145927.23307-1-acme@kernel.org> Return-path: In-Reply-To: <20180602145927.23307-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar Cc: Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , David Ahern , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Wang Nan List-Id: linux-perf-users.vger.kernel.org From: Arnaldo Carvalho de Melo To pick up changes from: $ git log --oneline -2 -i include/uapi/linux/prctl.h 356e4bfff2c5 prctl: Add force disable speculation b617cfc85816 prctl: Add speculation control prctls $ tools/perf/trace/beauty/prctl_option.sh > before.c $ cp include/uapi/linux/prctl.h tools/include/uapi/linux/prctl.h $ tools/perf/trace/beauty/prctl_option.sh > after.c $ diff -u before.c after.c --- before.c 2018-06-01 10:39:53.834073962 -0300 +++ after.c 2018-06-01 10:42:11.307985394 -0300 @@ -35,6 +35,8 @@ [42] = "GET_THP_DISABLE", [45] = "SET_FP_MODE", [46] = "GET_FP_MODE", + [52] = "GET_SPECULATION_CTRL", + [53] = "SET_SPECULATION_CTRL", }; static const char *prctl_set_mm_options[] = { [1] = "START_CODE", $ This will be used by 'perf trace' to show these strings when beautifying the prctl syscall args. At some point we'll be able to say something like: 'perf trace --all-cpus -e prctl(option=*SPEC*)' To filter by arg by name. This silences this warning when building tools/perf: Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h' Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Thomas Gleixner Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-zztsptwhc264r8wg44tqh5gp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/uapi/linux/prctl.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/include/uapi/linux/prctl.h b/tools/include/uapi/linux/prctl.h index af5f8c2df87a..db9f15f5db04 100644 --- a/tools/include/uapi/linux/prctl.h +++ b/tools/include/uapi/linux/prctl.h @@ -207,4 +207,16 @@ struct prctl_mm_map { # define PR_SVE_VL_LEN_MASK 0xffff # define PR_SVE_VL_INHERIT (1 << 17) /* inherit across exec */ +/* Per task speculation control */ +#define PR_GET_SPECULATION_CTRL 52 +#define PR_SET_SPECULATION_CTRL 53 +/* Speculation control variants */ +# define PR_SPEC_STORE_BYPASS 0 +/* Return and control values for PR_SET/GET_SPECULATION_CTRL */ +# define PR_SPEC_NOT_AFFECTED 0 +# define PR_SPEC_PRCTL (1UL << 0) +# define PR_SPEC_ENABLE (1UL << 1) +# define PR_SPEC_DISABLE (1UL << 2) +# define PR_SPEC_FORCE_DISABLE (1UL << 3) + #endif /* _LINUX_PRCTL_H */ -- 2.14.3