On Friday, 17 April 1998 at 12:03:38 -0700, Craig Milo Rogers wrote:
> Has anyone created entry.S code to count system calls (per
> syscall number), and /proc code to read these counts?
Here ya go. Info goes to /proc/syscalls (and a totals counter sits in
/proc/stat, just to be gratuitous). A Q&D pretty-printer might look like
this:
-------------------------------- [cut here] --------------------------------
#!/bin/sh
tmp=${TMP-/tmp}/`basename $0`.$$
trap "rm -f $tmp" 0
if [ "$1" = "-s" ]; then
grep="grep -wv 0"
else
grep=cat
fi
grep '#define __NR_' /usr/include/asm/unistd.h | awk '{print $2}' \
| cut -b6- > $tmp
paste $tmp /proc/syscalls | expand -t24 | $grep | ${PAGER-more}
-------------------------------- [cut here] --------------------------------
Anyone want to benchmark this?
Cheers,
Sander
--
Sander van Malssen -- svm@kozmix.ow.nl -- http://svm.www.cistron.nl/
* The 1-2-5 Page: http://svm.www.cistron.nl/music/ *
--OgqxwSJOaUobr8KG
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--- linux/arch/i386/kernel/entry.S.~1~ Sun Apr 19 14:46:52 1998
+++ linux/arch/i386/kernel/entry.S Sun Apr 19 17:01:14 1998
@@ -155,6 +155,8 @@
jae badsys
testb $0x20,flags(%ebx) # PF_TRACESYS
jne tracesys
+ incl kstat # kstat.syscalls
+ incl syscall_stat(,%eax,4) # syscall counter
call SYMBOL_NAME(sys_call_table)(,%eax,4)
movl %eax,EAX(%esp) # save the return value
ALIGN
--- linux/fs/proc/array.c.~1~ Sun Apr 19 14:46:52 1998
+++ linux/fs/proc/array.c Sun Apr 19 17:55:52 1998
@@ -35,6 +35,9 @@
* - Incorporation and non-SMP safe operation
* of forissier patch in 2.1.78 by
* Hans Marcus <crowbar@concepts.nl>
+ *
+ * Sander van Malssen: added /proc/syscalls
+ * <svm@kozmix.ow.nl>
*/
#include <linux/types.h>
@@ -291,13 +294,23 @@
len += sprintf(buffer + len,
"\nctxt %u\n"
"btime %lu\n"
- "processes %lu\n",
+ "processes %lu\n"
+ "syscalls %u\n",
kstat.context_swtch,
xtime.tv_sec - jiffies / HZ,
- total_forks);
+ total_forks,
+ kstat.syscalls);
return len;
}
+static int get_syscalls(char * buffer)
+{
+ int i, len = 0;
+
+ for (i = 0; i < NR_syscalls; i++)
+ len += sprintf (buffer + len, "%d\n", syscall_stat[i]);
+ return len;
+}
static int get_uptime(char * buffer)
{
@@ -1234,6 +1247,9 @@
case PROC_STAT:
return get_kstat(page);
+
+ case PROC_SYSCALLS:
+ return get_syscalls(page);
case PROC_SLABINFO:
return get_slabinfo(page);
--- linux/fs/proc/root.c.~1~ Sat Apr 18 10:21:02 1998
+++ linux/fs/proc/root.c Sun Apr 19 17:21:42 1998
@@ -613,6 +613,11 @@
S_IFREG | S_IRUGO, 1, 0, 0,
0, &proc_array_inode_operations
};
+static struct proc_dir_entry proc_root_syscalls = {
+ PROC_SYSCALLS, 8, "syscalls",
+ S_IFREG | S_IRUGO, 1, 0, 0,
+ 0, &proc_array_inode_operations
+};
#ifdef __powerpc__
static struct proc_dir_entry proc_root_ppc_htab = {
PROC_PPC_HTAB, 8, "ppc_htab",
@@ -657,6 +662,7 @@
proc_register(&proc_root, &proc_root_ksyms);
#endif
proc_register(&proc_root, &proc_root_stat);
+ proc_register(&proc_root, &proc_root_syscalls);
proc_register(&proc_root, &proc_root_devices);
proc_register(&proc_root, &proc_root_interrupts);
proc_register(&proc_root, &proc_root_filesystems);
--- linux/include/linux/kernel_stat.h.~1~ Sun Apr 19 14:46:52 1998
+++ linux/include/linux/kernel_stat.h Sun Apr 19 17:42:26 1998
@@ -5,16 +5,18 @@
#include <asm/smp.h>
#include <linux/smp.h>
#include <linux/tasks.h>
+#include <linux/sys.h>
/*
* 'kernel_stat.h' contains the definitions needed for doing
* some kernel statistics (cpu usage, context switches ...),
- * used by rstatd/perfmeter
+ * used by rstatd/perfmeter/procinfo
*/
#define DK_NDRIVE 4
struct kernel_stat {
+ unsigned int syscalls; /* Keep this first! (see entry.S) */
unsigned int cpu_user, cpu_nice, cpu_system;
unsigned int per_cpu_user[NR_CPUS],
per_cpu_nice[NR_CPUS],
@@ -34,6 +36,7 @@
};
extern struct kernel_stat kstat;
+extern int syscall_stat[NR_syscalls];
/*
* Number of interrupts per specific IRQ source, since bootup
--- linux/include/linux/proc_fs.h.~1~ Sat Apr 18 10:28:03 1998
+++ linux/include/linux/proc_fs.h Sun Apr 19 17:03:52 1998
@@ -49,7 +49,8 @@
PROC_SLABINFO,
PROC_PARPORT,
PROC_PPC_HTAB,
- PROC_SOUND
+ PROC_SOUND,
+ PROC_SYSCALLS
};
enum pid_directory_inos {
--- linux/kernel/sched.c.~1~ Fri Apr 17 22:31:16 1998
+++ linux/kernel/sched.c Sun Apr 19 17:42:44 1998
@@ -104,6 +104,7 @@
struct task_struct * task[NR_TASKS] = {&init_task, };
struct kernel_stat kstat = { 0 };
+int syscall_stat[NR_syscalls] = { 0 };
void scheduling_functions_start_here(void) { }
--OgqxwSJOaUobr8KG--
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