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authorDenys Vlasenko <vda.linux@googlemail.com>2010-06-21 05:17:23 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2010-06-21 05:17:23 (GMT)
commitadbbee46ad0661bf695d2bfe7a07ebced4bbe780 (patch)
tree657c70f934a0cb2a882e07d997a063172a0ceae5
parent05a550b48abe8490264cacf14b68534c2f8ac3ed (diff)
downloadbusybox-adbbee46ad0661bf695d2bfe7a07ebced4bbe780.tar.gz
busybox-adbbee46ad0661bf695d2bfe7a07ebced4bbe780.tar.bz2
bootchartd: added optional compat features
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--include/libbb.h1
-rw-r--r--init/Config.src14
-rw-r--r--init/bootchartd.c154
-rw-r--r--procps/sysctl.c1
4 files changed, 127 insertions, 43 deletions
diff --git a/include/libbb.h b/include/libbb.h
index 22c72d9..5e962fd 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1125,6 +1125,7 @@ typedef struct parser_t {
} parser_t;
parser_t* config_open(const char *filename) FAST_FUNC;
parser_t* config_open2(const char *filename, FILE* FAST_FUNC (*fopen_func)(const char *path)) FAST_FUNC;
+/* delims[0] is a comment char (use '\0' to disable), the rest are token delimiters */
int config_read(parser_t *parser, char **tokens, unsigned flags, const char *delims) FAST_FUNC;
#define config_read(parser, tokens, max, min, str, flags) \
config_read(parser, tokens, ((flags) | (((min) & 0xFF) << 8) | ((max) & 0xFF)), str)
diff --git a/init/Config.src b/init/Config.src
index 2e92081..590e298 100644
--- a/init/Config.src
+++ b/init/Config.src
@@ -122,18 +122,4 @@ config MESG
Mesg controls access to your terminal by others. It is typically
used to allow or disallow other users to write to your terminal
-config BOOTCHARTD
- bool "bootchartd"
- default y
- help
- bootchartd is commonly used to profile the boot process
- for the purpose of speeding it up. In this case, it is started
- by the kernel as the init process. This is configured by adding
- the init=/sbin/bootchartd option to the kernel command line.
-
- It can also be used to monitor the resource usage of a specific
- application or the running system in general. In this case,
- bootchartd is started interactively by running bootchartd start
- and stopped using bootchartd stop.
-
endmenu
diff --git a/init/bootchartd.c b/init/bootchartd.c
index d1f9ed3..1ed4f99 100644
--- a/init/bootchartd.c
+++ b/init/bootchartd.c
@@ -2,7 +2,58 @@
/*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
+
+//config:config BOOTCHARTD
+//config: bool "bootchartd"
+//config: default y
+//config: help
+//config: bootchartd is commonly used to profile the boot process
+//config: for the purpose of speeding it up. In this case, it is started
+//config: by the kernel as the init process. This is configured by adding
+//config: the init=/sbin/bootchartd option to the kernel command line.
+//config:
+//config: It can also be used to monitor the resource usage of a specific
+//config: application or the running system in general. In this case,
+//config: bootchartd is started interactively by running bootchartd start
+//config: and stopped using bootchartd stop.
+//config:
+//config:config FEATURE_BOOTCHARTD_BLOATED_HEADER
+//config: bool "bootchartd"
+//config: default y
+//config: depends on BOOTCHARTD
+//config: help
+//config: Create extended header file compatible with "big" bootchartd.
+//config: "Big" bootchartd is a shell script and it dumps some
+//config: "convenient" info int the header, such as:
+//config: title = Boot chart for `hostname` (`date`)
+//config: system.uname = `uname -srvm`
+//config: system.release = `cat /etc/DISTRO-release`
+//config: system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+//config: system.kernel.options = `cat /proc/cmdline`
+//config: This data is not mandatory for bootchart graph generation,
+//config: and is considered bloat. Nevertheless, this option
+//config: makes bootchartd applet to dump a subset of it.
+//config:
+//config:config FEATURE_BOOTCHARTD_CONFIG_FILE
+//config: bool "bootchartd"
+//config: default y
+//config: depends on BOOTCHARTD
+//config: help
+//config: Create extended header file compatible with "big" bootchartd.
+//config: "Big" bootchartd is a shell script and it dumps some
+//config: "convenient" info int the header, such as:
+//config: title = Boot chart for `hostname` (`date`)
+//config: system.uname = `uname -srvm`
+//config: system.release = `cat /etc/DISTRO-release`
+//config: system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+//config: system.kernel.options = `cat /proc/cmdline`
+//config: This data is not mandatory for bootchart graph generation,
+//config: and is considered bloat. Nevertheless, this option
+//config: makes bootchartd applet to dump a subset of it.
+
#include "libbb.h"
+/* After libbb.h, since it needs sys/types.h on some systems */
+#include <sys/utsname.h>
#include <sys/mount.h>
#ifndef MS_SILENT
# define MS_SILENT (1 << 15)
@@ -19,15 +70,16 @@
#define DO_SIGNAL_SYNC 1
-//Not supported: $PWD/bootchartd.conf and /etc/bootchartd.conf
-
+//$PWD/bootchartd.conf and /etc/bootchartd.conf:
+//supported options:
+//# Sampling period (in seconds)
+//SAMPLE_PERIOD=0.2
+//
+//not yet supported:
//# tmpfs size
//# (32 MB should suffice for ~20 minutes worth of log data, but YMMV)
//TMPFS_SIZE=32m
//
-//# Sampling period (in seconds)
-//SAMPLE_PERIOD=0.2
-//
//# Whether to enable and store BSD process accounting information. The
//# kernel needs to be configured to enable v3 accounting
//# (CONFIG_BSD_PROCESS_ACCT_V3). accton from the GNU accounting utilities
@@ -126,7 +178,7 @@ static int dump_procs(FILE *fp, int look_for_login_process)
return found_login_process;
}
-static char *make_tempdir(const char *prog)
+static char *make_tempdir(void)
{
char template[] = "/tmp/bootchart.XXXXXX";
char *tempdir = xstrdup(mkdtemp(template));
@@ -151,18 +203,10 @@ static char *make_tempdir(const char *prog)
} else {
xchdir(tempdir);
}
- {
- FILE *header_fp = xfopen("header", "w");
- if (prog)
- fprintf(header_fp, "profile.process = %s\n", prog);
- fputs("version = "BC_VERSION_STR"\n", header_fp);
- fclose(header_fp);
- }
-
return tempdir;
}
-static void do_logging(void)
+static void do_logging(int sample_pariod_us)
{
//# Enable process accounting if configured
//if [ "$PROCESS_ACCOUNTING" = "yes" ]; then
@@ -205,26 +249,61 @@ static void do_logging(void)
}
fflush_all();
wait_more:
- usleep(200*1000);
+ usleep(sample_pariod_us);
}
// [ -e kernel_pacct ] && accton off
}
-static void finalize(char *tempdir)
+static void finalize(char *tempdir, const char *prog)
{
//# Stop process accounting if configured
//local pacct=
//[ -e kernel_pacct ] && pacct=kernel_pacct
- //(
- // echo "version = $VERSION"
- // echo "title = Boot chart for $( hostname | sed q ) ($( date ))"
- // echo "system.uname = $( uname -srvm | sed q )"
- // echo "system.release = $( sed q /etc/SuSE-release )"
- // echo "system.cpu = $( grep '^model name' /proc/cpuinfo | sed q ) ($cpucount)"
- // echo "system.kernel.options = $( sed q /proc/cmdline )"
- //) >> header
+ FILE *header_fp = xfopen("header", "w");
+
+ if (prog)
+ fprintf(header_fp, "profile.process = %s\n", prog);
+
+ fputs("version = "BC_VERSION_STR"\n", header_fp);
+
+ if (ENABLE_FEATURE_BOOTCHARTD_BLOATED_HEADER) {
+ char *hostname;
+ char *kcmdline;
+ time_t t;
+ struct tm tm_time;
+ /* x2 for possible localized data */
+ char date_buf[sizeof("Mon Jun 21 05:29:03 CEST 2010") * 2];
+ struct utsname unamebuf;
+
+ hostname = safe_gethostname();
+ time(&t);
+ localtime_r(&t, &tm_time);
+ strftime(date_buf, sizeof(date_buf), "%a %b %e %H:%M:%S %Z %Y", &tm_time);
+ fprintf(header_fp, "title = Boot chart for %s (%s)\n", hostname, date_buf);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(hostname);
+
+ uname(&unamebuf); /* never fails */
+ /* same as uname -srvm */
+ fprintf(header_fp, "system.uname = %s %s %s %s\n",
+ unamebuf.sysname,
+ unamebuf.release,
+ unamebuf.version,
+ unamebuf.machine
+ );
+
+ //system.release = `cat /etc/DISTRO-release`
+ //system.cpu = `grep '^model name' /proc/cpuinfo | head -1` ($cpucount)
+
+ kcmdline = xmalloc_open_read_close("/proc/cmdline", NULL);
+ /* kcmdline includes trailing "\n" */
+ fprintf(header_fp, "system.kernel.options = %s", kcmdline);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(kcmdline);
+ }
+ fclose(header_fp);
/* Package log files */
system("tar -zcf /var/log/bootchart.tgz header *.log"); // + $pacct
@@ -256,6 +335,7 @@ static void finalize(char *tempdir)
int bootchartd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int bootchartd_main(int argc UNUSED_PARAM, char **argv)
{
+ int sample_pariod_us;
pid_t parent_pid, logger_pid;
smallint cmd;
enum {
@@ -287,7 +367,23 @@ int bootchartd_main(int argc UNUSED_PARAM, char **argv)
cmd = CMD_PID1;
}
- /* Here we are in START or INIT state. Create logger child: */
+ /* Here we are in START or INIT state */
+
+ /* Read config file: */
+ sample_pariod_us = 200 * 1000;
+ if (ENABLE_FEATURE_BOOTCHARTD_CONFIG_FILE) {
+ char* token[2];
+ parser_t *parser = config_open2("/etc/bootchartd.conf" + 5, fopen_for_read);
+ if (!parser)
+ parser = config_open2("/etc/bootchartd.conf", fopen_for_read);
+ while (config_read(parser, token, 2, 0, "#=", PARSE_NORMAL & ~PARSE_COLLAPSE)) {
+ if (strcmp(token[0], "SAMPLE_PERIOD") == 0 && token[1])
+ sample_pariod_us = atof(token[1]) * 1000000;
+ }
+ config_close(parser);
+ }
+
+ /* Create logger child: */
logger_pid = fork_or_rexec(argv);
if (logger_pid == 0) { /* child */
@@ -312,9 +408,9 @@ int bootchartd_main(int argc UNUSED_PARAM, char **argv)
if (cmd == CMD_PID1 && !getenv("PATH"))
putenv((char*)bb_PATH_root_path);
- tempdir = make_tempdir(cmd == CMD_START ? argv[2] : NULL);
- do_logging();
- finalize(tempdir);
+ tempdir = make_tempdir();
+ do_logging(sample_pariod_us);
+ finalize(tempdir, cmd == CMD_START ? argv[2] : NULL);
return EXIT_SUCCESS;
}
diff --git a/procps/sysctl.c b/procps/sysctl.c
index 7a5bf14..fc601d6 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -212,6 +212,7 @@ static int sysctl_handle_preload_file(const char *filename)
//TODO: comment may be only at line start. "var=1 #abc" - "1 #abc" is the value
// (but _whitespace_ from ends should be trimmed first (and we do it right))
//TODO: "var==1" is mishandled (must use "=1" as a value, but uses "1")
+// can it be fixed by removing PARSE_COLLAPSE bit?
while (config_read(parser, token, 2, 2, "# \t=", PARSE_NORMAL)) {
char *tp;
sysctl_dots_to_slashes(token[0]);