| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | tile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT | Chris Metcalf | 2013-09-30 | 1 | -3/+31 |
| | | | | | | | | | | | | | | | | | | It turns out the kernel relies on barrier() to force a reload of the percpu offset value. Since we can't easily modify the definition of barrier() to include "tp" as an output register, we instead provide a definition of __my_cpu_offset as extended assembly that includes a fake stack read to hazard against barrier(), forcing gcc to know that it must reread "tp" and recompute anything based on "tp" after a barrier. This fixes observed hangs in the slub allocator when we are looping on a percpu cmpxchg_double. A similar fix for ARMv7 was made in June in change 509eb76ebf97. Cc: stable@vger.kernel.org Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> | ||||
| * | arch/tile: core support for Tilera 32-bit chips. | Chris Metcalf | 2010-06-04 | 1 | -0/+24 |
| This change is the core kernel support for TILEPro and TILE64 chips. No driver support (except the console driver) is included yet. This includes the relevant Linux headers in asm/; the low-level low-level "Tile architecture" headers in arch/, which are shared with the hypervisor, etc., and are build-system agnostic; and the relevant hypervisor headers in hv/. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Reviewed-by: Paul Mundt <lethal@linux-sh.org> | |||||
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index : op-kernel-dev | |
| Development kernel branch for OpenPOWER systems | Raptor Engineering, LLC |
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