From: "tip-bot2 for Arnaldo Carvalho de Melo" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: "Adrian Hunter" <adrian.hunter@intel.com>,
"Brendan Gregg" <brendan.d.gregg@gmail.com>,
"Jiri Olsa" <jolsa@kernel.org>,
"Luis Cláudio Gonçalves" <lclaudio@redhat.com>,
"Namhyung Kim" <namhyung@kernel.org>,
"Arnaldo Carvalho de Melo" <acme@redhat.com>,
"Ingo Molnar" <mingo@kernel.org>,
"Borislav Petkov" <bp@alien8.de>,
linux-kernel@vger.kernel.org
Subject: [tip: perf/core] perf trace: Associate the "msr" tracepoint arg name with x86_MSR__scnprintf()
Date: Tue, 15 Oct 2019 05:31:44 -0000 [thread overview]
Message-ID: <157111750472.12254.9325323007855298666.tip-bot2@tip-bot2> (raw)
In-Reply-To: <tip-q1q4unmqja5ex7dy0kb5cjaa@git.kernel.org>
The following commit has been merged into the perf/core branch of tip:
Commit-ID: c330ef2847eeedfa9d06f03836dfd4fc6727e855
Gitweb: https://git.kernel.org/tip/c330ef2847eeedfa9d06f03836dfd4fc6727e855
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Mon, 07 Oct 2019 15:54:51 -03:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Wed, 09 Oct 2019 11:23:52 -03:00
perf trace: Associate the "msr" tracepoint arg name with x86_MSR__scnprintf()
So that we can go from:
# perf trace -e msr:write_msr --max-stack=16 sleep 1
0.000 sleep/6740 msr:write_msr(msr: 3221225728, val: 139636317451648)
do_trace_write_msr ([kernel.kallsyms])
do_trace_write_msr ([kernel.kallsyms])
do_arch_prctl_64 ([kernel.kallsyms])
__x64_sys_arch_prctl ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64 ([kernel.kallsyms])
init_tls (/usr/lib64/ld-2.29.so)
dl_main (/usr/lib64/ld-2.29.so)
_dl_sysdep_start (/usr/lib64/ld-2.29.so)
_dl_start (/usr/lib64/ld-2.29.so)
#
To:
# perf trace -e msr:write_msr --max-stack=16 sleep 1
0.000 sleep/8519 msr:write_msr(msr: FS_BASE, val: 139878031705472)
do_trace_write_msr ([kernel.kallsyms])
do_trace_write_msr ([kernel.kallsyms])
do_arch_prctl_64 ([kernel.kallsyms])
__x64_sys_arch_prctl ([kernel.kallsyms])
do_syscall_64 ([kernel.kallsyms])
entry_SYSCALL_64 ([kernel.kallsyms])
init_tls (/usr/lib64/ld-2.29.so)
dl_main (/usr/lib64/ld-2.29.so)
_dl_sysdep_start (/usr/lib64/ld-2.29.so)
_dl_start (/usr/lib64/ld-2.29.so)
#
This, in reverse, will allow for symbolic system call/tracepoint
filtering.
Cc: Adrian Hunter <adrian.hunter@intel.com>
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-q1q4unmqja5ex7dy0kb5cjaa@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-trace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index d52972c..e9f132a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1480,6 +1480,7 @@ static int syscall__alloc_arg_fmts(struct syscall *sc, int nr_args)
}
static struct syscall_arg_fmt syscall_arg_fmts__by_name[] = {
+ { .name = "msr", .scnprintf = SCA_X86_MSR, }
};
static int syscall_arg_fmt__cmp(const void *name, const void *fmtp)
parent reply other threads:[~2019-10-15 5:35 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <tip-q1q4unmqja5ex7dy0kb5cjaa@git.kernel.org>]
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