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| author | Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com> | 2018-03-15 01:40:41 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-27 11:25:14 +0300 |
| commit | 0063d61ccfc011f379a31acaeba6de7c926fed2c (patch) | |
| tree | 71f02138636f6ee2117b4f26b435d3434b86a13a /arch/powerpc/lib/feature-fixups.c | |
| parent | 84749a58b6e382f109abf1e734bc4dd43c2c25bb (diff) | |
| download | linux-0063d61ccfc011f379a31acaeba6de7c926fed2c.tar.xz | |
powerpc/rfi-flush: Differentiate enabled and patched flush types
Currently the rfi-flush messages print 'Using <type> flush' for all
enabled_flush_types, but that is not necessarily true -- as now the
fallback flush is always enabled on pseries, but the fixup function
overwrites its nop/branch slot with other flush types, if available.
So, replace the 'Using <type> flush' messages with '<type> flush is
available'.
Also, print the patched flush types in the fixup function, so users
can know what is (not) being used (e.g., the slower, fallback flush,
or no flush type at all if flush is disabled via the debugfs switch).
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/lib/feature-fixups.c')
| -rw-r--r-- | arch/powerpc/lib/feature-fixups.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/lib/feature-fixups.c b/arch/powerpc/lib/feature-fixups.c index 73697c4e3468..35f80ab7cbd8 100644 --- a/arch/powerpc/lib/feature-fixups.c +++ b/arch/powerpc/lib/feature-fixups.c @@ -153,7 +153,14 @@ void do_rfi_flush_fixups(enum l1d_flush_type types) patch_instruction(dest + 2, instrs[2]); } - printk(KERN_DEBUG "rfi-flush: patched %d locations\n", i); + printk(KERN_DEBUG "rfi-flush: patched %d locations (%s flush)\n", i, + (types == L1D_FLUSH_NONE) ? "no" : + (types == L1D_FLUSH_FALLBACK) ? "fallback displacement" : + (types & L1D_FLUSH_ORI) ? (types & L1D_FLUSH_MTTRIG) + ? "ori+mttrig type" + : "ori type" : + (types & L1D_FLUSH_MTTRIG) ? "mttrig type" + : "unknown"); } #endif /* CONFIG_PPC_BOOK3S_64 */ |