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Subject[PATCH 20/28] perf trace beauty: Use the mmap flags table generated from headers
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

Instead of requiring us to go on and edit sources to add new flag.

# perf trace -e *mmap sleep 0.1
0.025 ( 0.005 ms): sleep/29876 mmap(len: 163746, prot: READ, flags: PRIVATE, fd: 3) = 0x7faa68ad1000
0.059 ( 0.004 ms): sleep/29876 mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS) = 0x7faa68acf000
0.069 ( 0.006 ms): sleep/29876 mmap(len: 3889792, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3) = 0x7faa6851f000
0.086 ( 0.009 ms): sleep/29876 mmap(addr: 0x7faa688cb000, len: 24576, prot: READ|WRITE, flags: PRIVATE|FIXED|DENYWRITE, fd: 3, off: 1753088) = 0x7faa688cb000
0.101 ( 0.005 ms): sleep/29876 mmap(addr: 0x7faa688d1000, len: 14976, prot: READ|WRITE, flags: PRIVATE|FIXED|ANONYMOUS) = 0x7faa688d1000
0.348 ( 0.005 ms): sleep/29876 mmap(len: 111950656, prot: READ, flags: PRIVATE, fd: 3) = 0x7faa61a5b000
#

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: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-ggmoy6vxoygh5yim890ht0kf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/trace/beauty/mmap.c | 48 ++++++++++--------------------------------
1 file changed, 11 insertions(+), 37 deletions(-)

diff --git a/tools/perf/trace/beauty/mmap.c b/tools/perf/trace/beauty/mmap.c
index 0605593552c6..c534bd96ef5c 100644
--- a/tools/perf/trace/beauty/mmap.c
+++ b/tools/perf/trace/beauty/mmap.c
@@ -1,5 +1,6 @@
// SPDX-License-Identifier: LGPL-2.1
#include <uapi/linux/mman.h>
+#include <linux/log2.h>

static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,
struct syscall_arg *arg)
@@ -30,50 +31,23 @@ static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size,

#define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot

+static size_t mmap__scnprintf_flags(unsigned long flags, char *bf, size_t size)
+{
+#include "trace/beauty/generated/mmap_flags_array.c"
+ static DEFINE_STRARRAY(mmap_flags);
+
+ return strarray__scnprintf_flags(&strarray__mmap_flags, bf, size, flags);
+}
+
static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size,
struct syscall_arg *arg)
{
- int printed = 0, flags = arg->val;
+ unsigned long flags = arg->val;

if (flags & MAP_ANONYMOUS)
arg->mask |= (1 << 4) | (1 << 5); /* Mask 4th ('fd') and 5th ('offset') args, ignored */

-#define P_MMAP_FLAG(n) \
- if (flags & MAP_##n) { \
- printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
- flags &= ~MAP_##n; \
- }
-
- P_MMAP_FLAG(SHARED);
- P_MMAP_FLAG(PRIVATE);
-#ifdef MAP_32BIT
- P_MMAP_FLAG(32BIT);
-#endif
- P_MMAP_FLAG(ANONYMOUS);
- P_MMAP_FLAG(DENYWRITE);
- P_MMAP_FLAG(EXECUTABLE);
- P_MMAP_FLAG(FILE);
- P_MMAP_FLAG(FIXED);
-#ifdef MAP_FIXED_NOREPLACE
- P_MMAP_FLAG(FIXED_NOREPLACE);
-#endif
- P_MMAP_FLAG(GROWSDOWN);
- P_MMAP_FLAG(HUGETLB);
- P_MMAP_FLAG(LOCKED);
- P_MMAP_FLAG(NONBLOCK);
- P_MMAP_FLAG(NORESERVE);
- P_MMAP_FLAG(POPULATE);
- P_MMAP_FLAG(STACK);
- P_MMAP_FLAG(UNINITIALIZED);
-#ifdef MAP_SYNC
- P_MMAP_FLAG(SYNC);
-#endif
-#undef P_MMAP_FLAG
-
- if (flags)
- printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
-
- return printed;
+ return mmap__scnprintf_flags(flags, bf, size);
}

#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags
--
2.14.4
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