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Merge subr_pcpu.c:1.7 from HEAD to RELENG_6:

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Add "show allpcpu" to DDB, which prints the current CPU id followed by
  the per-cpu data for all CPUs.  This is easier to ask users to do than
  "figure out how many CPUs you have, now run show pcpu, then run it
  once for each CPU you have".

Approved by:	re (scottl)
This commit is contained in:
rwatson 2005-10-02 10:06:49 +00:00
parent f2f6c85a6b
commit 6817015865
1 changed files with 38 additions and 14 deletions

52
sys/kern/subr_pcpu.c

@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h>
#include <sys/pcpu.h>
#include <sys/proc.h>
#include <sys/smp.h>
#include <ddb/ddb.h>
static struct pcpu *cpuid_to_pcpu[MAXCPU];
@ -97,21 +98,12 @@ pcpu_find(u_int cpuid)
}
#ifdef DDB
DB_SHOW_COMMAND(pcpu, db_show_pcpu)
{
struct pcpu *pc;
struct thread *td;
int id;
if (have_addr)
id = ((addr >> 4) % 16) * 10 + (addr % 16);
else
id = PCPU_GET(cpuid);
pc = pcpu_find(id);
if (pc == NULL) {
db_printf("CPU %d not found\n", id);
return;
}
static void
show_pcpu(struct pcpu *pc)
{
struct thread *td;
db_printf("cpuid = %d\n", pc->pc_cpuid);
db_printf("curthread = ");
td = pc->pc_curthread;
@ -142,4 +134,36 @@ DB_SHOW_COMMAND(pcpu, db_show_pcpu)
witness_list_locks(&pc->pc_spinlocks);
#endif
}
DB_SHOW_COMMAND(pcpu, db_show_pcpu)
{
struct pcpu *pc;
int id;
if (have_addr)
id = ((addr >> 4) % 16) * 10 + (addr % 16);
else
id = PCPU_GET(cpuid);
pc = pcpu_find(id);
if (pc == NULL) {
db_printf("CPU %d not found\n", id);
return;
}
show_pcpu(pc);
}
DB_SHOW_COMMAND(allpcpu, db_show_cpu_all)
{
struct pcpu *pc;
int id;
db_printf("Current CPU: %d\n\n", PCPU_GET(cpuid));
for (id = 0; id < mp_maxid; id++) {
pc = pcpu_find(id);
if (pc != NULL) {
show_pcpu(pc);
db_printf("\n");
}
}
}
#endif