linux-next: manual merge of the tip tree with the limits tree
From: Stephen Rothwell
Date: Tue Apr 13 2010 - 23:59:24 EST
Hi all,
Today's linux-next merge of the tip tree got a conflict in
kernel/posix-cpu-timers.c between commit
0c1b5ce8de67c36bbf67db38240a91f358133bdd ("core: add task_struct to
update_rlimit_cpu") from the limits tree and commit
f55db609042faecd5e518ce372b87f846659b32e ("cpu-timers: Simplify
RLIMIT_CPU handling") from the tip tree.
I did the obvious fixup (see below) but it is probably not completely
correct. Jiri, did I see Linus ask for major revisions of the writable
limits work?
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
diff --cc kernel/posix-cpu-timers.c
index 2807ef8,799f360..0000000
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@@ -11,19 -11,18 +11,18 @@@
#include <trace/events/timer.h>
/*
- * Called after updating RLIMIT_CPU to set timer expiration if necessary.
+ * Called after updating RLIMIT_CPU to run cpu timer and update
+ * tsk->signal->cputime_expires expiration cache if necessary. Needs
+ * siglock protection since other code may update expiration cache as
+ * well.
*/
-void update_rlimit_cpu(unsigned long rlim_new)
+void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new)
{
cputime_t cputime = secs_to_cputime(rlim_new);
- struct signal_struct *const sig = task->signal;
- if (cputime_eq(sig->it[CPUCLOCK_PROF].expires, cputime_zero) ||
- cputime_gt(sig->it[CPUCLOCK_PROF].expires, cputime)) {
- spin_lock_irq(&task->sighand->siglock);
- set_process_cpu_timer(task, CPUCLOCK_PROF, &cputime, NULL);
- spin_unlock_irq(&task->sighand->siglock);
- }
- spin_lock_irq(¤t->sighand->siglock);
- set_process_cpu_timer(current, CPUCLOCK_PROF, &cputime, NULL);
- spin_unlock_irq(¤t->sighand->siglock);
++ spin_lock_irq(&task->sighand->siglock);
++ set_process_cpu_timer(task, CPUCLOCK_PROF, &cputime, NULL);
++ spin_unlock_irq(&task->sighand->siglock);
}
static int check_clock(const clockid_t which_clock)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/