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get irq->module relationship from /sys/bus/pci/*/driver 

Signed-off-by: Chao Liu <liuchao173@huawei.com>
This commit is contained in:
Chao Liu 2022-06-07 15:15:15 +08:00
parent b85854ac17
commit ff48ac9c84
1 changed files with 17 additions and 2 deletions
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19
classify.c
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@ -7,6 +7,7 @@
#include <dirent.h> #include <dirent.h>
#include <assert.h> #include <assert.h>
#include <errno.h> #include <errno.h>
#include <libgen.h>
#include "irqbalance.h" #include "irqbalance.h"
#include "types.h" #include "types.h"
@ -578,7 +579,7 @@ static int check_for_module_ban(char *name)
return 0; return 0;
} }
static int check_for_irq_ban(int irq, GList *proc_interrupts) static int check_for_irq_ban(int irq, char *mod, GList *proc_interrupts)
{ {
struct irq_info find, *res; struct irq_info find, *res;
GList *entry; GList *entry;
@ -594,6 +595,9 @@ static int check_for_irq_ban(int irq, GList *proc_interrupts)
/* /*
* Check to see if we banned module which the irq belongs to. * Check to see if we banned module which the irq belongs to.
*/ */
if (mod != NULL && strlen(mod) > 0 && check_for_module_ban(mod))
return 1;
entry = g_list_find_custom(proc_interrupts, &find, compare_ints); entry = g_list_find_custom(proc_interrupts, &find, compare_ints);
if (entry) { if (entry) {
res = entry->data; res = entry->data;
@ -609,14 +613,25 @@ static void add_new_irq(char *path, struct irq_info *hint, GList *proc_interrupt
struct irq_info *new; struct irq_info *new;
struct user_irq_policy pol; struct user_irq_policy pol;
int irq = hint->irq; int irq = hint->irq;
char buf[PATH_MAX], drvpath[PATH_MAX];
char *mod = NULL;
int ret;
new = get_irq_info(irq); new = get_irq_info(irq);
if (new) if (new)
return; return;
if (path) {
sprintf(buf, "%s/driver", path);
ret = readlink(buf, drvpath, PATH_MAX);
if (ret > 0 && ret < PATH_MAX) {
drvpath[ret] = '\0';
mod = basename(drvpath);
}
}
/* Set NULL devpath for the irq has no sysfs entries */ /* Set NULL devpath for the irq has no sysfs entries */
get_irq_user_policy(path, irq, &pol); get_irq_user_policy(path, irq, &pol);
if ((pol.ban == 1) || check_for_irq_ban(irq, proc_interrupts)) { /*FIXME*/ if ((pol.ban == 1) || check_for_irq_ban(irq, mod, proc_interrupts)) { /*FIXME*/
__add_banned_irq(irq, &banned_irqs); __add_banned_irq(irq, &banned_irqs);
new = get_irq_info(irq); new = get_irq_info(irq);
} else } else