diff options
| author | Jay Azurin <jmazurin@us.ibm.com> | 2015-08-28 12:53:22 -0500 |
|---|---|---|
| committer | A. Patrick Williams III <iawillia@us.ibm.com> | 2015-09-04 18:10:13 -0500 |
| commit | aaf724e9f06ac6013f97bb967aae6c4510b0a1da (patch) | |
| tree | 58561d4ee3e7e715f453a7462c1aa8bfa1f4902d /src/include/util | |
| parent | 63ffc550f12b78679e66813e73ea995ca84551b9 (diff) | |
| download | talos-hostboot-aaf724e9f06ac6013f97bb967aae6c4510b0a1da.tar.gz talos-hostboot-aaf724e9f06ac6013f97bb967aae6c4510b0a1da.zip | |
Workaround for fapiMalloc fragmentation issue
Added a macro that returns the next highest power of 2 number of pages
for a given buffer. Implemented fapiPlatMalloc() so that it calls the macro
for buffers larger than 1 page size. This can prevent excessive
fragmentation when allocating very large buffers.
CQ:SW317751
Change-Id: I8eaef95ba4381026377a1eab0fe620b2954c8230
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/20255
Tested-by: Jenkins Server
Tested-by: Jenkins OP Build CI
Tested-by: Jenkins OP HW
Tested-by: FSP CI Jenkins
Reviewed-by: William H. Schwartz <whs@us.ibm.com>
Reviewed-by: Michael Baiocchi <baiocchi@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Diffstat (limited to 'src/include/util')
| -rw-r--r-- | src/include/util/align.H | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/include/util/align.H b/src/include/util/align.H index 0ffec92d1..e0132b2b7 100644 --- a/src/include/util/align.H +++ b/src/include/util/align.H @@ -51,4 +51,18 @@ #define ALIGN_MEGABYTE(u) (ALIGN_X(u,MEGABYTE)) #define ALIGN_MEGABYTE_DOWN(u) (ALIGN_DOWN_X(u,MEGABYTE)) +// Returns a number that is aligned to the next highest power of 2 number of +// pages for the given buffer. +#define ALIGN_TO_NEXT_POWER_OF_TWO_PAGES(b) ({\ + unsigned int v = ALIGN_PAGE(b)/PAGE_SIZE;\ + v--;\ + v |= v >> 1;\ + v |= v >> 2;\ + v |= v >> 4;\ + v |= v >> 8;\ + v |= v >> 16;\ + v++;\ + v * PAGE_SIZE;\ + }) + #endif |
