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2316ef5891
It was using the first variation on producing a string representation
for a binary flag, one that used the copy of uapi/linux/sched.h with
preprocessor tricks that had to be updated everytime a new flag was
introduced.
Use the more recent scrape script + strarray + strarray__scnprintf_flags() combo.
$ tools/perf/trace/beauty/clone.sh | head -5
static const char *clone_flags[] = {
[ilog2(0x00000100) + 1] = "VM",
[ilog2(0x00000200) + 1] = "FS",
[ilog2(0x00000400) + 1] = "FILES",
[ilog2(0x00000800) + 1] = "SIGHAND",
$
Now we can move uapi/linux/sched.h from tools/include/, that is used for
building perf to the scrape only directory tools/perf/trace/beauty/include.
Reviewed-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZfnULIn3XKDq0bpc@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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* trace/beauty/cone.c
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*
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* Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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#include "trace/beauty/beauty.h"
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#include <linux/kernel.h>
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#include <linux/log2.h>
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#include <sys/types.h>
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#include <sched.h>
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static size_t clone__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
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{
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#include "trace/beauty/generated/clone_flags_array.c"
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static DEFINE_STRARRAY(clone_flags, "CLONE_");
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return strarray__scnprintf_flags(&strarray__clone_flags, bf, size, show_prefix, flags);
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}
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size_t syscall_arg__scnprintf_clone_flags(char *bf, size_t size, struct syscall_arg *arg)
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{
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unsigned long flags = arg->val;
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enum syscall_clone_args {
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SCC_FLAGS = (1 << 0),
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SCC_CHILD_STACK = (1 << 1),
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SCC_PARENT_TIDPTR = (1 << 2),
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SCC_CHILD_TIDPTR = (1 << 3),
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SCC_TLS = (1 << 4),
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};
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if (!(flags & CLONE_PARENT_SETTID))
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arg->mask |= SCC_PARENT_TIDPTR;
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if (!(flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)))
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arg->mask |= SCC_CHILD_TIDPTR;
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if (!(flags & CLONE_SETTLS))
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arg->mask |= SCC_TLS;
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return clone__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
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}
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