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66 lines
1.9 KiB
66 lines
1.9 KiB
From ff48ac9c84f0b318dfce665605d72e86dfcfe008 Mon Sep 17 00:00:00 2001
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From: Chao Liu <liuchao173@huawei.com>
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Date: Tue, 7 Jun 2022 15:15:15 +0800
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Subject: [PATCH] get irq->module relationship from /sys/bus/pci/*/driver
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Signed-off-by: Chao Liu <liuchao173@huawei.com>
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---
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classify.c | 19 +++++++++++++++++--
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1 file changed, 17 insertions(+), 2 deletions(-)
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--- a/classify.c
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+++ b/classify.c
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@@ -7,6 +7,7 @@
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#include <dirent.h>
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#include <assert.h>
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#include <errno.h>
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+#include <libgen.h>
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#include "irqbalance.h"
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#include "types.h"
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@@ -578,7 +579,7 @@ static int check_for_module_ban(char *na
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return 0;
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}
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-static int check_for_irq_ban(int irq, GList *proc_interrupts)
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+static int check_for_irq_ban(int irq, char *mod, GList *proc_interrupts)
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{
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struct irq_info find, *res;
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GList *entry;
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@@ -594,6 +595,9 @@ static int check_for_irq_ban(int irq, GL
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/*
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* Check to see if we banned module which the irq belongs to.
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*/
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+ if (mod != NULL && strlen(mod) > 0 && check_for_module_ban(mod))
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+ return 1;
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+
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entry = g_list_find_custom(proc_interrupts, &find, compare_ints);
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if (entry) {
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res = entry->data;
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@@ -609,14 +613,25 @@ static void add_new_irq(char *path, stru
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struct irq_info *new;
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struct user_irq_policy pol;
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int irq = hint->irq;
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+ char buf[PATH_MAX], drvpath[PATH_MAX];
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+ char *mod = NULL;
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+ int ret;
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new = get_irq_info(irq);
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if (new)
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return;
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+ if (path) {
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+ sprintf(buf, "%s/driver", path);
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+ ret = readlink(buf, drvpath, PATH_MAX);
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+ if (ret > 0 && ret < PATH_MAX) {
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+ drvpath[ret] = '\0';
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+ mod = basename(drvpath);
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+ }
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+ }
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/* Set NULL devpath for the irq has no sysfs entries */
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get_irq_user_policy(path, irq, &pol);
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- if ((pol.ban == 1) || check_for_irq_ban(irq, proc_interrupts)) { /*FIXME*/
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+ if ((pol.ban == 1) || check_for_irq_ban(irq, mod, proc_interrupts)) { /*FIXME*/
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__add_banned_irq(irq, &banned_irqs);
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new = get_irq_info(irq);
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} else
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