/* * lib/clz_ctz.c * * Copyright (C) 2013 Chanho Min * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * The functions in this file aren't called directly, but are required by * GCC builtins such as __builtin_ctz, and therefore they can't be removed * despite appearing unreferenced in kernel source. * * __c[lt]z[sd]i2 can be overridden by linking arch-specific versions. */ #include #include int __weak __ctzsi2(int val); int __weak __ctzsi2(int val) { return __ffs(val); } EXPORT_SYMBOL(__ctzsi2); int __weak __clzsi2(int val); int __weak __clzsi2(int val) { return 32 - fls(val); } EXPORT_SYMBOL(__clzsi2); int __weak __clzdi2(long val); int __weak __ctzdi2(long val); #if BITS_PER_LONG == 32 int __weak __clzdi2(long val) { return 32 - fls((int)val); } EXPORT_SYMBOL(__clzdi2); int __weak __ctzdi2(long val) { return __ffs((u32)val); } EXPORT_SYMBOL(__ctzdi2); #elif BITS_PER_LONG == 64 int __weak __clzdi2(long val) { return 64 - fls64((u64)val); } EXPORT_SYMBOL(__clzdi2); int __weak __ctzdi2(long val) { return __ffs64((u64)val); } EXPORT_SYMBOL(__ctzdi2); #else #error BITS_PER_LONG not 32 or 64 #endif on value='packet-rx-pump-back'>packet-rx-pump-back net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/tools/power/x86
diff options
context:
space:
mode:
authorSriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>2017-01-09 16:00:44 +0530
committerJ. Bruce Fields <bfields@redhat.com>2017-01-12 16:14:47 -0500
commitce1ca7d2d140a1f4aaffd297ac487f246963dd2f (patch)
tree5aeab5e0cb6ef404c894a18251588278b9432a2c /tools/power/x86
parent546125d1614264d26080817d0c8cddb9b25081fa (diff)
svcrdma: avoid duplicate dma unmapping during error recovery
In rdma_read_chunk_frmr() when ib_post_send() fails, the error code path invokes ib_dma_unmap_sg() to unmap the sg list. It then invokes svc_rdma_put_frmr() which in turn tries to unmap the same sg list through ib_dma_unmap_sg() again. This second unmap is invalid and could lead to problems when the iova being unmapped is subsequently reused. Remove the call to unmap in rdma_read_chunk_frmr() and let svc_rdma_put_frmr() handle it. Fixes: 412a15c0fe53 ("svcrdma: Port to new memory registration API") Cc: stable@vger.kernel.org Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'tools/power/x86')