Difuse/packages
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

irqbalance: upstream patch to fix irq-module relation

Browse source 
Apply post-1.9.0 patch from upstream to fix the irq-->module
relation detection.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
This commit is contained in:
Hannu Nyman 2022-06-12 20:24:36 +03:00
parent 0c74ab9a79
commit 358c2293fa
1 changed files with 66 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

66
utils/irqbalance/patches/0001-post-190-fix-get-irq-module.patch Normal file
View file

@ -0,0 +1,66 @@
From ff48ac9c84f0b318dfce665605d72e86dfcfe008 Mon Sep 17 00:00:00 2001
From: Chao Liu <liuchao173@huawei.com>
Date: Tue, 7 Jun 2022 15:15:15 +0800
Subject: [PATCH] get irq->module relationship from /sys/bus/pci/*/driver
Signed-off-by: Chao Liu <liuchao173@huawei.com>
---
classify.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
--- a/classify.c
+++ b/classify.c
@@ -7,6 +7,7 @@
#include <dirent.h>
#include <assert.h>
#include <errno.h>
+#include <libgen.h>
#include "irqbalance.h"
#include "types.h"
@@ -578,7 +579,7 @@ static int check_for_module_ban(char *na
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;
GList *entry;
@@ -594,6 +595,9 @@ static int check_for_irq_ban(int irq, GL
/*
* 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);
if (entry) {
res = entry->data;
@@ -609,14 +613,25 @@ static void add_new_irq(char *path, stru
struct irq_info *new;
struct user_irq_policy pol;
int irq = hint->irq;
+ char buf[PATH_MAX], drvpath[PATH_MAX];
+ char *mod = NULL;
+ int ret;
new = get_irq_info(irq);
if (new)
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 */
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);
new = get_irq_info(irq);
} else