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| author | Arnd Bergmann <arnd@arndb.de> | 2012-03-04 21:09:11 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-03-04 21:20:46 +0000 |
| commit | 709baa67c676a187a63c0f0f40efceb3fb1eef72 (patch) | |
| tree | 0a2b8bab5ac4f52069a1e50d20028ae44d8c256a /mm/memcontrol.c | |
| parent | 281a9f78eaa5d0d78bd0e3acd181a24d3bad28e3 (diff) | |
| parent | 8c690fdf465be9d97229f6bb0e6346624d6753a9 (diff) | |
Merge tag 'tegra-soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra into tegra/soc2
From: Olof Johansson <olof@lixom.net>
Tegra 30 SMP support
I did this as a separate topic branch because it depends on both the
soc and the soc-drivers branch, so it brings both of those in as a base.
This branch contains work to enable SMP support on Tegra30 and reworks
some of the SMP bringup for T20 as well.
It also contains a device tree patch that builds on top of the SMP/clock
changes in the rest of the branch, so it made more sense to apply it
here than deal with the merge conflicts back and forth.
* tag 'tegra-soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/tegra:
ARM: dt: Explicitly configure all serial ports on Tegra Cardhu
ARM: tegra: support for secondary cores on Tegra30
ARM: tegra: support for Tegra30 CPU powerdomains
ARM: tegra: add support for Tegra30 powerdomains
ARM: tegra: export tegra_powergate_is_powered()
ARM: tegra: prepare powergate.c for multiple variants
ARM: tegra: rework Tegra secondary CPU core bringup
ARM: tegra: functions to access the flowcontroller
ARM: tegra: initialize Tegra chipid early
ARM: tegra: export Tegra chipid
ARM: tegra: cleanup use of chipid register
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 6728a7ae6f2..228d6461c12 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4414,6 +4414,9 @@ static void mem_cgroup_usage_unregister_event(struct cgroup *cgrp, */ BUG_ON(!thresholds); + if (!thresholds->primary) + goto unlock; + usage = mem_cgroup_usage(memcg, type == _MEMSWAP); /* Check if a threshold crossed before removing */ @@ -4462,7 +4465,7 @@ swap_buffers: /* To be sure that nobody uses thresholds */ synchronize_rcu(); - +unlock: mutex_unlock(&memcg->thresholds_lock); } |