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Message-ID: <CAOJsxLFgvqJUwwnrtH8b9eOfNzUEZDmQGP1FVvToitD6ayYP0g@mail.gmail.com>
Date: Thu, 23 Aug 2012 23:51:59 +0300
From: Pekka Enberg <penberg@...nel.org>
To: Bernhard Rosenkraenzer <bernhard.rosenkranzer@...aro.org>
Cc: linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCHv2 1/1] perf: Port to Android
Hi Bernard,
(You didn't CC perf maintainers.)
On Thu, Aug 23, 2012 at 6:01 PM, Bernhard Rosenkraenzer
<bernhard.rosenkranzer@...aro.org> wrote:
> commit 4dc79eed16e3bb03b3cf92fcc6127e107e7537aa
> Author: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@...aro.org>
> Date: Sat Jun 23 06:18:05 2012 +0200
>
> perf: Port to Android
>
> Adapt perf to deal with some missing functions in Bionic etc.
>
> Change-Id: I0cda2aad3edba26e1be3aebc9475a229ea9e8356
> Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@...aro.org>
>
Your patch changelog format is pretty funky.
> diff --git a/tools/perf/Makefile b/tools/perf/Makefile
> index 92271d3..d15cdae 100644
> --- a/tools/perf/Makefile
> +++ b/tools/perf/Makefile
Whoa! I had no idea Android userspace was f*cked up...
> @@ -117,7 +117,7 @@ ifndef PERF_DEBUG
> endif
>
> CFLAGS = -fno-omit-frame-pointer -ggdb3 -Wall -Wextra -std=gnu99
> $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS)
> $(EXTRA_CFLAGS)
> -EXTLIBS = -lpthread -lrt -lelf -lm
> +EXTLIBS = -lpthread -lelf -lm
> ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -
> D_GNU_SOURCE
> ALL_LDFLAGS = $(LDFLAGS)
> STRIP ?= strip
> @@ -474,12 +474,23 @@ FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
> ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF)),y)
> FLAGS_GLIBC=$(ALL_CFLAGS) $(ALL_LDFLAGS)
> ifneq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC)),y)
> - msg := $(error No gnu/libc-version.h found, please install glibc-
> dev[el]/glibc-static);
> + ifeq ($(call try-cc,$(SOURCE_BIONIC),$(FLAGS_GLIBC)),y)
> + # Found Bionic instead of glibc...
> + # That works too, but needs a bit of special treatment
> + BASIC_CFLAGS += -DANDROID -include compat-android.h
> + ANDROID := 1
> + else
> + msg := $(error No gnu/libc-version.h found, please install glibc-
> dev[el]/glibc-static);
> + endif
> else
> msg := $(error No libelf.h/libelf found, please install libelf-
> dev/elfutils-libelf-devel);
> endif
> endif
>
> +ifneq ($(ANDROID),1)
> +EXTLIBS += -lrt
> +endif
> +
> ifneq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_COMMON)),y)
> BASIC_CFLAGS += -DLIBELF_NO_MMAP
> endif
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index be4e1ee..3a1d0cc 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -27,10 +27,43 @@
> #include "util/cpumap.h"
> #include "util/thread_map.h"
>
> +#include <stdlib.h>
> #include <unistd.h>
> #include <sched.h>
> #include <sys/mman.h>
>
> +#ifdef ANDROID
> +/* While stdlib.h has a prototype for it,
> + Bionic doesn't actually implement on_exit() */
> +#ifndef ATEXIT_MAX
> +#define ATEXIT_MAX 32
> +#endif
> +static int __on_exit_count = 0;
> +typedef void (*on_exit_func_t)(int, void*);
> +static on_exit_func_t __on_exit_funcs[ATEXIT_MAX];
> +static void *__on_exit_args[ATEXIT_MAX];
> +static int __exitcode = 0;
> +static void __handle_on_exit_funcs();
> +static int on_exit(on_exit_func_t function, void *arg);
> +#define exit(x) (exit)(__exitcode = (x))
> +
> +static int on_exit(on_exit_func_t function, void *arg) {
> + if(__on_exit_count == ATEXIT_MAX)
> + return ENOMEM;
> + else if(__on_exit_count == 0)
> + atexit(__handle_on_exit_funcs);
> + __on_exit_funcs[__on_exit_count] = function;
> + __on_exit_args[__on_exit_count++] = arg;
> + return 0;
> +}
> +
> +static void __handle_on_exit_funcs() {
> + for(int i=0; i<__on_exit_count; i++) {
> + __on_exit_funcs[i](__exitcode, __on_exit_args[i]);
> + }
> +}
> +#endif
> +
> enum write_mode_t {
> WRITE_FORCE,
> WRITE_APPEND
> diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
> index 223ffdc..6dbd2ee 100644
> --- a/tools/perf/builtin-test.c
> +++ b/tools/perf/builtin-test.c
> @@ -469,10 +469,17 @@ static int test__basic_mmap(void)
> .watermark = 0,
> };
> cpu_set_t cpu_set;
> +#ifndef ANDROID
> const char *syscall_names[] = { "getsid", "getppid", "getpgrp",
> "getpgid", };
> pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp,
> (void*)getpgid };
> +#else
> + /* No getsid() on Android */
> + const char *syscall_names[] = { "getppid", "getpgrp",
> + "getpgid", };
> + pid_t (*syscalls[])(void) = { getppid, getpgrp, (void*)getpgid };
> +#endif
> #define nsyscalls ARRAY_SIZE(syscall_names)
> int ids[nsyscalls];
> unsigned int nr_events[nsyscalls],
> diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
> index b382bd5..1521a275 100644
> --- a/tools/perf/builtin.h
> +++ b/tools/perf/builtin.h
> @@ -1,6 +1,7 @@
> #ifndef BUILTIN_H
> #define BUILTIN_H
>
> +#include "compat-android.h"
> #include "util/util.h"
> #include "util/strbuf.h"
>
> diff --git a/tools/perf/compat-android.h b/tools/perf/compat-android.h
> new file mode 100644
> index 0000000..9a33f49
> --- /dev/null
> +++ b/tools/perf/compat-android.h
> @@ -0,0 +1,96 @@
> +/* Android compatibility header
> + * Provides missing bits in Bionic on Android, ignored
> + * on regular Linux.
> + *
> + * Written by Bernhard.Rosenkranzer@...aro.org
> + *
> + * Released into the public domain. Do with this file
> + * whatever you want.
> + */
> +#ifdef ANDROID
> +/* Bionic has its own idea about ALIGN, and kills other definitions.
> + * Done outside the multiple-inclusion wrapper to make sure we
> + * can override Bionic's ALIGN by simply including compat-android.h
> + * again after including Bionic headers.
> + */
> +#undef ALIGN
> +#undef __ALIGN_MASK
> +#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
> +#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
> +
> +#ifndef _COMPAT_ANDROID_H_
> +#define _COMPAT_ANDROID_H_ 1
> +#include <stdio.h>
> +#include <signal.h>
> +#include <asm/page.h> /* for PAGE_SIZE */
> +#include <asm/termios.h> /* for winsize */
> +
> +#ifndef __WORDSIZE
> +#include <stdint.h>
> +#define __WORDSIZE _BITSIZE
> +#endif
> +
> +#ifndef roundup
> +#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
> +#endif
> +
> +#ifndef __force
> +#define __force
> +#endif
> +
> +#ifndef __le32
> +#define __le32 uint32_t
> +#endif
> +
> +/* Assorted functions that are missing from Bionic */
> +static void psignal(int sig, const char *s)
> +{
> + if(sig >= 0 && sig < NSIG) {
> + if(s)
> + fprintf(stderr, "%s: %s\n", s, sys_siglist[sig]);
> + else
> + fprintf(stderr, "%s\n", sys_siglist[sig]);
> + } else {
> + if(s)
> + fprintf(stderr, "%s: invalid signal\n", s);
> + else
> + fputs("invalid signal\n", stderr);
> + }
> +}
> +
> +static ssize_t getline(char **lineptr, size_t *n, FILE *stream)
> +{
> + size_t ret = 0;
> +
> + if (!lineptr || !n || !stream)
> + return -1;
> +
> + if(!*lineptr) {
> + *n = 128;
> + *lineptr = (char*)malloc(*n);
> + if(!*lineptr)
> + return -1;
> + }
> +
> + while(!feof(stream) && !ferror(stream)) {
> + int c;
> + if(ret == *n) {
> + *n += 128;
> + *lineptr = (char*)realloc(*lineptr, *n);
> + if(!*lineptr) {
> + *n = 0;
> + return -1;
> + }
> + }
> + c = fgetc(stream);
> + if(c == EOF)
> + break;
> + *lineptr[ret++] = c;
> + if(c == '\n')
> + break;
> + }
> + *lineptr[ret] = 0;
> + return ret;
> +}
> +#endif
> +#endif
> diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-
> tests.mak
> index d9084e0..498cd4d 100644
> --- a/tools/perf/config/feature-tests.mak
> +++ b/tools/perf/config/feature-tests.mak
> @@ -43,6 +43,19 @@ int main(void)
> }
> endef
>
> +define SOURCE_BIONIC
> +#include <android/api-level.h>
> +
> +int main(void)
> +{
> +#ifndef __ANDROID_API__
> + error out
> +#else
> + return 0;
> +#endif
> +}
> +endef
> +
> define SOURCE_ELF_MMAP
> #include <libelf.h>
> int main(void)
> diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
> index efa5dc8..ead88ea 100644
> --- a/tools/perf/util/annotate.h
> +++ b/tools/perf/util/annotate.h
> @@ -6,6 +6,7 @@
> #include "symbol.h"
> #include <linux/list.h>
> #include <linux/rbtree.h>
> +#include <pthread.h>
>
> struct objdump_line {
> struct list_head node;
> diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
> index 2a6f33c..867415a 100644
> --- a/tools/perf/util/event.c
> +++ b/tools/perf/util/event.c
> @@ -6,6 +6,7 @@
> #include "strlist.h"
> #include "thread.h"
> #include "thread_map.h"
> +#include "../compat-android.h"
>
> static const char *perf_event__names[] = {
> [0] = "TOTAL",
> diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
> index 1b19728..2b0554b 100644
> --- a/tools/perf/util/event.h
> +++ b/tools/perf/util/event.h
> @@ -6,6 +6,7 @@
>
> #include "../perf.h"
> #include "map.h"
> +#include "../compat-android.h"
>
> /*
> * PERF_SAMPLE_IP | PERF_SAMPLE_TID | *
> diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
> index 0f99f39..77c5ced 100644
> --- a/tools/perf/util/util.h
> +++ b/tools/perf/util/util.h
> @@ -70,15 +70,19 @@
> #include <sys/socket.h>
> #include <sys/ioctl.h>
> #include <sys/select.h>
> +#ifndef ANDROID
> #include <netinet/in.h>
> #include <netinet/tcp.h>
> #include <arpa/inet.h>
> +#endif
> #include <netdb.h>
> #include <pwd.h>
> #include <inttypes.h>
> #include "../../../include/linux/magic.h"
> #include "types.h"
> +#ifndef ANDROID
> #include <sys/ttydefaults.h>
> +#endif
>
> extern const char *graph_line;
> extern const char *graph_dotted_line;
>
> --
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