From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Adrian Hunter <adrian.hunter@intel.com>,
David Ahern <dsahern@gmail.com>, Jiri Olsa <jolsa@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Wang Nan <wangnan0@huawei.com>
Subject: [PATCH 2/4] tools headers: Synchronize prctl.h ABI header
Date: Sat, 2 Jun 2018 11:59:25 -0300 [thread overview]
Message-ID: <20180602145927.23307-3-acme@kernel.org> (raw)
In-Reply-To: <20180602145927.23307-1-acme@kernel.org>
From: Arnaldo Carvalho de Melo <acme@redhat.com>
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 <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-zztsptwhc264r8wg44tqh5gp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
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
next prev parent reply other threads:[~2018-06-02 15:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-02 14:59 [GIT PULL 0/4] perf/urgent fixes Arnaldo Carvalho de Melo
2018-06-02 14:59 ` [PATCH 1/4] perf trace beauty prctl: Default header_dir to cwd to work without parms Arnaldo Carvalho de Melo
2018-06-02 14:59 ` Arnaldo Carvalho de Melo [this message]
2018-06-02 14:59 ` [PATCH 3/4] tools headers: Sync x86 cpufeatures.h with the kernel sources Arnaldo Carvalho de Melo
2018-06-02 14:59 ` [PATCH 4/4] perf tools intel-pt-decoder: Update insn.h from " Arnaldo Carvalho de Melo
2018-06-03 17:12 ` [GIT PULL 0/4] perf/urgent fixes Ingo Molnar
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