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| author | Carl E. Love <cel@linux.vnet.ibm.com> | 2012-11-29 06:42:03 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-01-29 10:18:14 +1100 |
| commit | 46ed7a76ae7770cb8ba733ee2b06273397ad8b5b (patch) | |
| tree | f0b0f73d2bb546d82f15d8ae98115932f70fc8f9 /arch | |
| parent | 72640d880350165c3a7b8f2e4fb4bf852ea7b606 (diff) | |
| download | linux-46ed7a76ae7770cb8ba733ee2b06273397ad8b5b.tar.gz linux-46ed7a76ae7770cb8ba733ee2b06273397ad8b5b.tar.bz2 linux-46ed7a76ae7770cb8ba733ee2b06273397ad8b5b.zip | |
powerpc/oprofile: Fix error in oprofile power7_marked_instr_event() function
The calculation for the left shift of the mask OPROFILE_PM_PMCSEL_MSK has an
error. The calculation is should be to shift left by (max_cntrs - cntr) times
the width of the pmsel field width. However, the #define OPROFILE_MAX_PMC_NUM
was used instead of OPROFILE_PMSEL_FIELD_WIDTH. This patch fixes the
calculation.
Signed-off-by: Carl Love <cel@us.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/oprofile/op_model_power4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/oprofile/op_model_power4.c b/arch/powerpc/oprofile/op_model_power4.c index 315f9495e9b2..f444b94935f5 100644 --- a/arch/powerpc/oprofile/op_model_power4.c +++ b/arch/powerpc/oprofile/op_model_power4.c @@ -52,7 +52,7 @@ static int power7_marked_instr_event(u64 mmcr1) for (pmc = 0; pmc < 4; pmc++) { psel = mmcr1 & (OPROFILE_PM_PMCSEL_MSK << (OPROFILE_MAX_PMC_NUM - pmc) - * OPROFILE_MAX_PMC_NUM); + * OPROFILE_PMSEL_FIELD_WIDTH); psel = (psel >> ((OPROFILE_MAX_PMC_NUM - pmc) * OPROFILE_PMSEL_FIELD_WIDTH)) & ~1ULL; unit = mmcr1 & (OPROFILE_PM_UNIT_MSK |