Commit 9012e3dd authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf trace beauty: Add script to autogenerate mremap's flags args string/id table 



It'll also conditionally generate the defines, so that if we don't have
those when building a new tool tarball in an older systems, we get
those, and we need them sometimes in the actual scnprintf routine, such
as when checking if a flags means we have an extra arg, like with
MREMAP_FIXED.

  $ tools/perf/trace/beauty/mremap_flags.sh
  static const char *mremap_flags[] = {
  	[ilog2(1) + 1] = "MAYMOVE",
  #ifndef MREMAP_MAYMOVE
  #define MREMAP_MAYMOVE 1
  #endif
  	[ilog2(2) + 1] = "FIXED",
  #ifndef MREMAP_FIXED
  #define MREMAP_FIXED 2
  #endif
  	[ilog2(4) + 1] = "DONTUNMAP",
  #ifndef MREMAP_DONTUNMAP
  #define MREMAP_DONTUNMAP 4
  #endif
  };
  $

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d758d5d4

tools/perf/Makefile.perf

+8 −0
Original line number Diff line number Diff line
@@ -537,6 +537,12 @@ mmap_flags_tbl := $(srctree)/tools/perf/trace/beauty/mmap_flags.sh 
$(mmap_flags_array): $(linux_uapi_dir)/mman.h $(asm_generic_uapi_dir)/mman.h $(asm_generic_uapi_dir)/mman-common.h $(mmap_flags_tbl)

	$(Q)$(SHELL) '$(mmap_flags_tbl)' $(linux_uapi_dir) $(asm_generic_uapi_dir) $(arch_asm_uapi_dir) > $@



mremap_flags_array := $(beauty_outdir)/mremap_flags_array.c

mremap_flags_tbl := $(srctree)/tools/perf/trace/beauty/mremap_flags.sh



$(mremap_flags_array): $(linux_uapi_dir)/mman.h $(mremap_flags_tbl)

	$(Q)$(SHELL) '$(mremap_flags_tbl)' $(linux_uapi_dir) > $@



mount_flags_array := $(beauty_outdir)/mount_flags_array.c

mount_flags_tbl := $(srctree)/tools/perf/trace/beauty/mount_flags.sh
@@ -710,6 +716,7 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc 
	$(vhost_virtio_ioctl_array) \

	$(madvise_behavior_array) \

	$(mmap_flags_array) \

	$(mremap_flags_array) \

	$(mount_flags_array) \

	$(move_mount_flags_array) \

	$(perf_ioctl_array) \
@@ -1008,6 +1015,7 @@ clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clea 
		$(OUTPUT)$(fspick_arrays) \

		$(OUTPUT)$(madvise_behavior_array) \

		$(OUTPUT)$(mmap_flags_array) \

		$(OUTPUT)$(mremap_flags_array) \

		$(OUTPUT)$(mount_flags_array) \

		$(OUTPUT)$(move_mount_flags_array) \

		$(OUTPUT)$(drm_ioctl_array) \

tools/perf/trace/beauty/mmap.c

+13 −19
Original line number Diff line number Diff line
@@ -54,28 +54,22 @@ static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, 


#define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags



static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size,

						  struct syscall_arg *arg)

{

	const char *flags_prefix = "MREMAP_";

	bool show_prefix = arg->show_string_prefix;

	int printed = 0, flags = arg->val;

#include "trace/beauty/generated/mremap_flags_array.c"

static DEFINE_STRARRAY(mremap_flags, "MREMAP_");



#define P_MREMAP_FLAG(n) \

	if (flags & MREMAP_##n) { \

		printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? flags_prefix : "", #n); \

		flags &= ~MREMAP_##n; \

static size_t mremap__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)

{

       return strarray__scnprintf_flags(&strarray__mremap_flags, bf, size, show_prefix, flags);

}



	P_MREMAP_FLAG(MAYMOVE);

	P_MREMAP_FLAG(FIXED);

	P_MREMAP_FLAG(DONTUNMAP);

#undef P_MREMAP_FLAG

static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size, struct syscall_arg *arg)

{

	unsigned long flags = arg->val;



	if (flags)

		printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);

	if (!(flags & MREMAP_FIXED))

		arg->mask |=  (1 << 5); /* Mask 5th ('new_address') args, ignored */



	return printed;

	return mremap__scnprintf_flags(flags, bf, size, arg->show_string_prefix);

}



#define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags

tools/perf/trace/beauty/mremap_flags.sh

0 → 100755
+18 −0
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: LGPL-2.1



if [ $# -ne 1 ] ; then

	linux_header_dir=tools/include/uapi/linux

else

	linux_header_dir=$1

fi



linux_mman=${linux_header_dir}/mman.h



printf "static const char *mremap_flags[] = {\n"

regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MREMAP_([[:alnum:]_]+)[[:space:]]+((0x)?[[:xdigit:]]+)[[:space:]]*.*'

egrep -q $regex ${linux_mman} && \

(egrep $regex ${linux_mman} | \

	sed -r "s/$regex/\2 \1 \1 \1 \2/g"	| \

	xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n#ifndef MREMAP_%s\n#define MREMAP_%s %s\n#endif\n")

printf "};\n"