| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20070419113004.GA7825@ff.dom.local>
Date: Thu, 19 Apr 2007 13:30:04 +0200
From: Jarek Poplawski <jarkao2@...pl>
To: linux-kernel@...r.kernel.org
Cc: Ingo Molnar <mingo@...e.hu>
Subject: [PATCH] lockdep: removed unused ip argument in mark_lock & mark_held_locks
It looks like a remainder from designing... (or I miss something?)
PS: patched on 2.6.21-rc7 + today's lookup_chain_cache comment errata
Signed-off-by: Jarek Poplawski <jarkao@...pl>
---
diff -Nurp 2.6.21-rc7-/kernel/lockdep.c 2.6.21-rc7/kernel/lockdep.c
--- 2.6.21-rc7-/kernel/lockdep.c 2007-04-19 11:25:40.000000000 +0200
+++ 2.6.21-rc7/kernel/lockdep.c 2007-04-19 12:11:47.000000000 +0200
@@ -1578,7 +1578,7 @@ valid_state(struct task_struct *curr, st
* Mark a lock with a usage bit, and validate the state transition:
*/
static int mark_lock(struct task_struct *curr, struct held_lock *this,
- enum lock_usage_bit new_bit, unsigned long ip)
+ enum lock_usage_bit new_bit)
{
unsigned int new_mask = 1 << new_bit, ret = 1;
@@ -1601,14 +1601,6 @@ static int mark_lock(struct task_struct
this->class->usage_mask |= new_mask;
-#ifdef CONFIG_TRACE_IRQFLAGS
- if (new_bit == LOCK_ENABLED_HARDIRQS ||
- new_bit == LOCK_ENABLED_HARDIRQS_READ)
- ip = curr->hardirq_enable_ip;
- else if (new_bit == LOCK_ENABLED_SOFTIRQS ||
- new_bit == LOCK_ENABLED_SOFTIRQS_READ)
- ip = curr->softirq_enable_ip;
-#endif
if (!save_trace(this->class->usage_traces + new_bit))
return 0;
@@ -1807,7 +1799,7 @@ static int mark_lock(struct task_struct
* Mark all held locks with a usage bit:
*/
static int
-mark_held_locks(struct task_struct *curr, int hardirq, unsigned long ip)
+mark_held_locks(struct task_struct *curr, int hardirq)
{
enum lock_usage_bit usage_bit;
struct held_lock *hlock;
@@ -1827,7 +1819,7 @@ mark_held_locks(struct task_struct *curr
else
usage_bit = LOCK_ENABLED_SOFTIRQS;
}
- if (!mark_lock(curr, hlock, usage_bit, ip))
+ if (!mark_lock(curr, hlock, usage_bit))
return 0;
}
@@ -1880,7 +1872,7 @@ void trace_hardirqs_on(void)
* We are going to turn hardirqs on, so set the
* usage bit for all held locks:
*/
- if (!mark_held_locks(curr, 1, ip))
+ if (!mark_held_locks(curr, 1))
return;
/*
* If we have softirqs enabled, then set the usage
@@ -1888,7 +1880,7 @@ void trace_hardirqs_on(void)
* this bit from being set before)
*/
if (curr->softirqs_enabled)
- if (!mark_held_locks(curr, 0, ip))
+ if (!mark_held_locks(curr, 0))
return;
curr->hardirq_enable_ip = ip;
@@ -1956,7 +1948,7 @@ void trace_softirqs_on(unsigned long ip)
* enabled too:
*/
if (curr->hardirqs_enabled)
- mark_held_locks(curr, 0, ip);
+ mark_held_locks(curr, 0);
}
/*
@@ -2094,43 +2086,43 @@ static int __lock_acquire(struct lockdep
if (read) {
if (curr->hardirq_context)
if (!mark_lock(curr, hlock,
- LOCK_USED_IN_HARDIRQ_READ, ip))
+ LOCK_USED_IN_HARDIRQ_READ))
return 0;
if (curr->softirq_context)
if (!mark_lock(curr, hlock,
- LOCK_USED_IN_SOFTIRQ_READ, ip))
+ LOCK_USED_IN_SOFTIRQ_READ))
return 0;
} else {
if (curr->hardirq_context)
- if (!mark_lock(curr, hlock, LOCK_USED_IN_HARDIRQ, ip))
+ if (!mark_lock(curr, hlock, LOCK_USED_IN_HARDIRQ))
return 0;
if (curr->softirq_context)
- if (!mark_lock(curr, hlock, LOCK_USED_IN_SOFTIRQ, ip))
+ if (!mark_lock(curr, hlock, LOCK_USED_IN_SOFTIRQ))
return 0;
}
}
if (!hardirqs_off) {
if (read) {
if (!mark_lock(curr, hlock,
- LOCK_ENABLED_HARDIRQS_READ, ip))
+ LOCK_ENABLED_HARDIRQS_READ))
return 0;
if (curr->softirqs_enabled)
if (!mark_lock(curr, hlock,
- LOCK_ENABLED_SOFTIRQS_READ, ip))
+ LOCK_ENABLED_SOFTIRQS_READ))
return 0;
} else {
if (!mark_lock(curr, hlock,
- LOCK_ENABLED_HARDIRQS, ip))
+ LOCK_ENABLED_HARDIRQS))
return 0;
if (curr->softirqs_enabled)
if (!mark_lock(curr, hlock,
- LOCK_ENABLED_SOFTIRQS, ip))
+ LOCK_ENABLED_SOFTIRQS))
return 0;
}
}
#endif
/* mark it as used: */
- if (!mark_lock(curr, hlock, LOCK_USED, ip))
+ if (!mark_lock(curr, hlock, LOCK_USED))
return 0;
out_calc_hash:
/*
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists