| commit | 29641ce165e5f643b48988cb779c6ba97b647503 | |
| author | Kevin Corry <kevcorry@us.ibm.com> | |
| Tue, 11 Dec 2007 12:49:17 +0000 (11 13:49 +0100) | ||
| committer | Arnd Bergmann <arnd@arndb.de> | |
| Wed, 19 Dec 2007 00:00:01 +0000 (19 01:00 +0100) | ||
| tree | 1212a500fed327bfaf81237e6a451838ddd57aee | treesnapshot (tar.gz zip) |
| parent | 7ee17466b6ac3b63ce87492d080e15e7f144f7d2 | commitdiff |
[POWERPC] perfmon2: make pm_interval register read/write
The pm_interval register in the Cell PMU is read/write, but was implemented in
the kernel as write-only. Previously, the written value was saved in a "shadow"
copy so calls to cbe_read_pm() could return the value.
Perfmon2 needs to be able to read the current values of pm_interval, so change
cbe_read_pm() to read the actual register instead of the "shadow" copy. There
is currently no code in the kernel that tries to read the pm_interval register
with cbe_read_pm() (expecting to receive the "shadow" value), so this should
not break any existing code.
Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
Signed-off-by: Carl Love <carll@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The pm_interval register in the Cell PMU is read/write, but was implemented in
the kernel as write-only. Previously, the written value was saved in a "shadow"
copy so calls to cbe_read_pm() could return the value.
Perfmon2 needs to be able to read the current values of pm_interval, so change
cbe_read_pm() to read the actual register instead of the "shadow" copy. There
is currently no code in the kernel that tries to read the pm_interval register
with cbe_read_pm() (expecting to receive the "shadow" value), so this should
not break any existing code.
Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
Signed-off-by: Carl Love <carll@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| arch/powerpc/platforms/cell/pmu.c | diffblobblamehistory |