From: tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: tglx@linutronix.de, brendan.d.gregg@gmail.com, hpa@zytor.com,
acme@redhat.com, adrian.hunter@intel.com, namhyung@kernel.org,
jolsa@kernel.org, viro@zeniv.linux.org.uk, mingo@kernel.org,
linux-kernel@vger.kernel.org, lclaudio@redhat.com
Subject: [tip:perf/core] perf trace: Beautify 'fspick' arguments
Date: Thu, 30 May 2019 01:00:12 -0700 [thread overview]
Message-ID: <tip-erau5xjtt8wvgnhvdbchstuk@git.kernel.org> (raw)
Commit-ID: 693bd3949be6c73218e3666d85e37841d678ea7b
Gitweb: https://git.kernel.org/tip/693bd3949be6c73218e3666d85e37841d678ea7b
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Mon, 20 May 2019 16:24:15 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 28 May 2019 18:37:42 -0300
perf trace: Beautify 'fspick' arguments
Use existing beautifiers for the first 2 args (dfd, path) and wire up
the recently introduced fspick flags table generator.
Now it should be possible to just use:
perf trace -e fspick
As root and see all move_mount syscalls with its args beautified, either
using the vfs_getname perf probe method or using the
augmented_raw_syscalls.c eBPF helper to get the pathnames, the other
args should work in all cases, i.e. all that is needed can be obtained
directly from the raw_syscalls:sys_enter tracepoint args.
# cat sys_fspick.c
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <unistd.h>
#include <sys/syscall.h> /* For SYS_xxx definitions */
#include <fcntl.h>
#define __NR_fspick 433
#define FSPICK_CLOEXEC 0x00000001
#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
#define FSPICK_NO_AUTOMOUNT 0x00000004
#define FSPICK_EMPTY_PATH 0x00000008
static inline int sys_fspick(int fd, const char *path, int flags)
{
syscall(__NR_fspick, fd, path, flags);
}
int main(int argc, char *argv[])
{
int flags = 0, fd = 0;
open("/foo", 0);
sys_fspick(fd++, "/foo1", flags);
flags |= FSPICK_CLOEXEC;
sys_fspick(fd++, "/foo2", flags);
flags |= FSPICK_SYMLINK_NOFOLLOW;
sys_fspick(fd++, "/foo3", flags);
flags |= FSPICK_NO_AUTOMOUNT;
sys_fspick(fd++, "/foo4", flags);
flags |= FSPICK_EMPTY_PATH;
return sys_fspick(fd++, "/foo5", flags);
}
# perf trace -e fspick ./sys_fspick
LLVM: dumping /home/acme/git/perf/tools/perf/examples/bpf/augmented_raw_syscalls.o
fspick(0, "/foo1", 0) = -1 ENOENT (No such file or directory)
fspick(1, "/foo2", FSPICK_CLOEXEC) = -1 ENOENT (No such file or directory)
fspick(2, "/foo3", FSPICK_CLOEXEC|FSPICK_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory)
fspick(3, "/foo4", FSPICK_CLOEXEC|FSPICK_SYMLINK_NOFOLLOW|FSPICK_NO_AUTOMOUNT) = -1 ENOENT (No such file or directory)
fspick(4, "/foo5", FSPICK_CLOEXEC|FSPICK_SYMLINK_NOFOLLOW|FSPICK_NO_AUTOMOUNT|FSPICK_EMPTY_PATH) = -1 ENOENT (No such file or directory)
#
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-erau5xjtt8wvgnhvdbchstuk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile.perf | 8 ++++++++
tools/perf/builtin-trace.c | 4 ++++
tools/perf/examples/bpf/augmented_raw_syscalls.c | 2 ++
tools/perf/trace/beauty/Build | 1 +
tools/perf/trace/beauty/beauty.h | 3 +++
tools/perf/trace/beauty/fspick.c | 24 ++++++++++++++++++++++++
6 files changed, 42 insertions(+)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 20448d8cc162..fe93f8c46080 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -419,6 +419,12 @@ fadvise_advice_tbl := $(srctree)/tools/perf/trace/beauty/fadvise.sh
$(fadvise_advice_array): $(linux_uapi_dir)/in.h $(fadvise_advice_tbl)
$(Q)$(SHELL) '$(fadvise_advice_tbl)' $(linux_uapi_dir) > $@
+fspick_arrays := $(beauty_outdir)/fspick_arrays.c
+fspick_tbls := $(srctree)/tools/perf/trace/beauty/fspick.sh
+
+$(fspick_arrays): $(linux_uapi_dir)/fs.h $(fspick_tbls)
+ $(Q)$(SHELL) '$(fspick_tbls)' $(linux_uapi_dir) > $@
+
pkey_alloc_access_rights_array := $(beauty_outdir)/pkey_alloc_access_rights_array.c
asm_generic_hdr_dir := $(srctree)/tools/include/uapi/asm-generic/
pkey_alloc_access_rights_tbl := $(srctree)/tools/perf/trace/beauty/pkey_alloc_access_rights.sh
@@ -634,6 +640,7 @@ build-dir = $(if $(__build-dir),$(__build-dir),.)
prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioctl_array) \
$(fadvise_advice_array) \
+ $(fspick_arrays) \
$(pkey_alloc_access_rights_array) \
$(sndrv_pcm_ioctl_array) \
$(sndrv_ctl_ioctl_array) \
@@ -929,6 +936,7 @@ clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clea
$(OUTPUT)tests/llvm-src-{base,kbuild,prologue,relocation}.c \
$(OUTPUT)pmu-events/pmu-events.c \
$(OUTPUT)$(fadvise_advice_array) \
+ $(OUTPUT)$(fspick_arrays) \
$(OUTPUT)$(madvise_behavior_array) \
$(OUTPUT)$(mmap_flags_array) \
$(OUTPUT)$(mount_flags_array) \
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index b76c950e4393..1643da631699 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -713,6 +713,10 @@ static struct syscall_fmt {
[2] = { .scnprintf = SCA_FCNTL_ARG, /* arg */ }, }, },
{ .name = "flock",
.arg = { [1] = { .scnprintf = SCA_FLOCK, /* cmd */ }, }, },
+ { .name = "fspick",
+ .arg = { [0] = { .scnprintf = SCA_FDAT, /* dfd */ },
+ [1] = { .scnprintf = SCA_FILENAME, /* path */ },
+ [2] = { .scnprintf = SCA_FSPICK_FLAGS, /* flags */ }, }, },
{ .name = "fstat", .alias = "newfstat", },
{ .name = "fstatat", .alias = "newfstatat", },
{ .name = "futex",
diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c b/tools/perf/examples/bpf/augmented_raw_syscalls.c
index 8d0c0976696e..68a3d61752ce 100644
--- a/tools/perf/examples/bpf/augmented_raw_syscalls.c
+++ b/tools/perf/examples/bpf/augmented_raw_syscalls.c
@@ -118,6 +118,7 @@ struct augmented_filename {
#define SYS_EXECVEAT 322
#define SYS_STATX 332
#define SYS_MOVE_MOUNT 429
+#define SYS_FSPICK 433
pid_filter(pids_filtered);
@@ -253,6 +254,7 @@ int sys_enter(struct syscall_enter_args *args)
case SYS_FINIT_MODULE:
case SYS_FREMOVEXATTR:
case SYS_FSETXATTR:
+ case SYS_FSPICK:
case SYS_FUTIMESAT:
case SYS_INOTIFY_ADD_WATCH:
case SYS_LINKAT:
diff --git a/tools/perf/trace/beauty/Build b/tools/perf/trace/beauty/Build
index d84812c094ba..c2d38b2b606b 100644
--- a/tools/perf/trace/beauty/Build
+++ b/tools/perf/trace/beauty/Build
@@ -1,6 +1,7 @@
perf-y += clone.o
perf-y += fcntl.o
perf-y += flock.o
+perf-y += fspick.o
ifeq ($(SRCARCH),$(filter $(SRCARCH),x86))
perf-y += ioctl.o
endif
diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h
index dfb84032d8eb..90c1ee708dc9 100644
--- a/tools/perf/trace/beauty/beauty.h
+++ b/tools/perf/trace/beauty/beauty.h
@@ -141,6 +141,9 @@ size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_ar
size_t syscall_arg__scnprintf_flock(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_FLOCK syscall_arg__scnprintf_flock
+size_t syscall_arg__scnprintf_fspick_flags(char *bf, size_t size, struct syscall_arg *arg);
+#define SCA_FSPICK_FLAGS syscall_arg__scnprintf_fspick_flags
+
size_t syscall_arg__scnprintf_ioctl_cmd(char *bf, size_t size, struct syscall_arg *arg);
#define SCA_IOCTL_CMD syscall_arg__scnprintf_ioctl_cmd
diff --git a/tools/perf/trace/beauty/fspick.c b/tools/perf/trace/beauty/fspick.c
new file mode 100644
index 000000000000..c402479c96f0
--- /dev/null
+++ b/tools/perf/trace/beauty/fspick.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: LGPL-2.1
+/*
+ * trace/beauty/fspick.c
+ *
+ * Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+ */
+
+#include "trace/beauty/beauty.h"
+#include <linux/log2.h>
+
+static size_t fspick__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
+{
+#include "trace/beauty/generated/fspick_arrays.c"
+ static DEFINE_STRARRAY(fspick_flags, "FSPICK_");
+
+ return strarray__scnprintf_flags(&strarray__fspick_flags, bf, size, show_prefix, flags);
+}
+
+size_t syscall_arg__scnprintf_fspick_flags(char *bf, size_t size, struct syscall_arg *arg)
+{
+ unsigned long flags = arg->val;
+
+ return fspick__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
+}
reply other threads:[~2019-05-30 8:00 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=tip-erau5xjtt8wvgnhvdbchstuk@git.kernel.org \
--to=tipbot@zytor.com \
--cc=acme@redhat.com \
--cc=adrian.hunter@intel.com \
--cc=brendan.d.gregg@gmail.com \
--cc=hpa@zytor.com \
--cc=jolsa@kernel.org \
--cc=lclaudio@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=namhyung@kernel.org \
--cc=tglx@linutronix.de \
--cc=viro@zeniv.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.